Vegetable crops. Pumpkin family

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The Pumpkin family is very extensive. Its representatives live in both the Old and New Worlds and do not abandon either the humid tropics and subtropics, or deserts - it would be warm! Pumpkins have large seeds, at a young age They grow rapidly, and in adulthood they reach impressive sizes.

Cucumber

India and China are recognized as the birthplace of this wonderful vegetable, but Russian gardeners long ago brought it far to the north and created varieties that are phenomenal in terms of early ripening and cold resistance. In southern gardens, cucumber is second only to tomato in area, and in northern garden beds it is second only to cabbage. Local Russian varieties were bred long ago in almost every province throughout the vast country (with the exception of the Far North). The nationwide love for a modest and “frivolous” product seems surprising. Moreover, cucumbers contain about 96% water (although, according to the catchphrase of the founder of the Department of Vegetable Growing of the Moscow Agricultural Academy V.I. Edelshtein, “this water is not tap water...”). But the craving for fresh cucumbers is not at all accidental - their juice is rich in physiologically active substances. In addition to mineral salts, including essential microelements, it contains vitamins and enzymes that promote their absorption.

For thousands of years, cucumber has been used both in medicine and in cosmetology. Fresh fruits are known for their pronounced diuretic effect, as well as a laxative and antipyretic. The alkaline reaction of the pulp makes it an indispensable product for people suffering from high acidity of gastric juice. In addition, the fiber in fruits is not coarse; it does not injure the gastrointestinal tract, but only helps cleanse it.

Variety selection

Finding the “right” variety or hybrid of cucumber is not an easy task. On the one hand, there is plenty to choose from: state register There are almost 2000 registered selection achievements! But there is another side to the coin: with such a multitude, it’s no wonder you get confused in finding what you need for specific conditions. Therefore, we will try to divide the selection process into 6 steps (in in this case we will talk about growing for the needs of the family).

Step 1: in a salad or in a pickle? According to their purpose, cucumber varieties and hybrids are divided into salad, pickling, canning and universal. The most popular are pickling and universal varieties. It is difficult to argue with lovers of classic pickled cucumbers, but it is a pity that we grow few true salad varieties. After all, the most healthy cucumber- fresh, and the better one is the one that is more tender and juicy, and these qualities do not combine well with the strength required for canning raw materials. Universality in this case is conditional, for the sake of it you have to sacrifice something. So isn't it better to use special varieties? In a salad, for example, Zozulya, put small Be Healthy on the table fresh, salt in a Teremok tub, and close in jars. Hit of the season?

Step 2: a view from the inside. The taste of a fresh cucumber depends on many factors. Here is the chemical composition (content of essential oils, salts, sugars, acids). The consistency of the pulp and the hardness of the skin also play a role. It should be noted that the cucumber fruits of modern high-quality hybrids do not taste bitter under any circumstances, but old pickling varieties have bitterness, which disappears during the ripening process. So there is no point in putting up with this drawback of salad cucumbers - it’s easier to immediately choose a suitable hybrid.

If you choose cucumbers for pickling, look for descriptions of strong fruits without voids and with dense pulp.

Step 3: attitude towards light. Having figured out what kind of greens and gherkins we need, let’s pay attention to the properties of the plants themselves. Let's start with the fact that there are “winter” and “summer” cucumbers. The word “winter” in this case has nothing to do with the ability to withstand frost (it didn’t exist and still doesn’t), and even in terms of resistance to cold snaps, winter hybrids (varieties) are inferior to summer hybrids (it would seem a paradox). But they are shade-tolerant and are able to bear fruit in rather poor lighting. This point is relevant for those who grow cucumbers in shaded beds or on balconies.

Step 4: gender issues. It is very important whether the plant can produce fruits without pollination or not. Parthenocarpy is necessary in cases where there is no one to “work as bees” or there is not enough pollen (for example, there are few or no male flowers). Bee-pollinated cucumber plants have their own tastes - under certain conditions they exhibit high productivity: the pollinated ovary has an increased competitive ability in the fight for nutrients. By the way, a fruit with developing seeds always contains more biologically active substances compared to a parthenocarpic cucumber.

Step 5: bouquet of fruits. The number and arrangement of female flowers also matters. In cases where they grow in the axils of the leaves in bunches of 3-7 pieces or more, we get a lot of small fruits. If the plant simultaneously forms only 1-2 ovaries, then they receive “increased nutrition” and can very quickly turn from undergrowth to overgrowth (in these cases, you have to harvest every other day).

Step 6: attention to the bushes. For those who care for plantings, the branching pattern of plants is of great importance. Is it important for you to spend less time on shaping? Look for hybrids that are characterized by weak branching - usually their main stem is more loaded with fruits (until the plants “unload” them, the side shoots almost do not grow). After the first wave of harvesting, some varieties of this type form normal shoots, others (Alphabet) - short shoots ending in flowers, and then the cucumbers are again compactly located along the main stem. The longer the season, the more such waves of fruiting there can be.

However, the longer the summer lasts, the more pests and pathogens accumulate on plants. And then plants with strong lateral shoots and a large leaf surface show greater vitality - they bear fruit before frost in the open ground and before short day in October in a greenhouse. Among the domestic hybrids of this type, the following can be named: Maryina Roshcha, Chistye Prudy, Sekret Firma; from imported ones: Herman, Meringue and others.

How to get a harvest?

Two elements at once

I decided to write about an interesting way to grow pumpkin, which allows you to get larger and more ripe fruits. I first saw its use in the late 90s. Pumpkin seedlings were planted in a greenhouse close to the wall. When she grew up and began to block the sun for her neighbors, and the danger of frost had passed, the whip was taken out of the greenhouse through a side transom or into a specially made hole. If the covering of the greenhouse is film, cut a slit in it, thread the stem out through it (some of the leaves are cut off so as not to interfere), and then glue the edges of the slit with tape so that they do not diverge. The roots remain in excellent conditions, and the pumpkins are growing beautifully.

O. Danilova, Moscow region.

Cucumbers are grown both in open ground and in greenhouses, greenhouses, tunnels, under temporary frame shelters and simply in furrows covered with non-woven material.

The soil for cucumbers is prepared so that it is loose, nutritious, with a reaction close to neutral, free from weeds and pests, so that there is no threat of water stagnation. The crop is responsive to organic fertilizers, which improve the soil structure and contain growth-stimulating substances.

If there is a need for a harvest as early as possible, it makes sense to grow cucumbers through seedlings. When planting fairly mature plants with 3-4 true leaves, the time gain will be maximum. Otherwise, they deal with seedlings as follows: if the weather is already warm and the conditions at the planting site already meet the needs of young plants, they can be planted with the first true leaf. In all cases, when sowing seedlings, we can keep the process under control: at a temperature of 25-27°C, at least 90% of good seeds will sprout on the 3-4th day. True, for this, the seeds must be carefully sown horizontally, planted to the same depth of 1-1.5 cm and evenly heated.

If sowing is carried out immediately on permanent place, then they start it when the soil warms up to at least 16 °C. At the same time, you must be prepared for the fact that seedlings will appear only on the 6-10th day and may not be friendly.

Planting density depends on varietal characteristics(small leaves or large ones, side shoots growing weakly or powerful), on the place of cultivation (in a greenhouse or open ground) and on how long we are going to keep the plants (the longer, the more space they need to be given). On average, per 1 m2 there are 2.5 vigorous plants or 3.5 weakly branching ones in a greenhouse and 3-4.5 in open ground.

The most convenient way of placement is two-line tapes. 40-50 cm are left between the rows in the tape so that an irrigation pipe or furrow for irrigation or a strip of black non-woven material can be placed. Between the ribbons (pairs of rows) wide row spacing is left - 110-120 cm, and in the row between plants - 20-30 cm. When using a trellis, plants can be planted in one line with a step of 20 cm, and their tops can be tied in a checkerboard pattern to two parallel wires fixed 50 cm apart along the bed.

Developing plants have to be watered frequently (every other day in hot weather) and fed (every 10 days). After all root system- weak point of cucumber. Not only does it have difficulty coping with the supply of a large mass of leaves and fruits, but in the event of a lack of nutrients due to the massive filling of ovaries, the roots begin to die off! Cucumber is more responsive than other vegetables to organic fertilizers (infusion of manure or droppings 1:5-10, diluted before application in a proportion of 0.5 liters per bucket).

When grown in open ground, shaping is carried out according to the “minimum program” - the tops are pinched at the beginning of the growth of the ovaries to speed up the process, and the side shoots if the threat of thickening is real. It is possible to do without surgical intervention altogether when growth is limited by generous sunshine and light and actively growing fruits.

In a greenhouse, cucumber plants must be tied up so that they use its volume. Remove flowers and shoots from the axils lower leaves so that they do not interfere with air circulation and do not provoke the development of rot. Subsequently, several side shoots are pinched for one leaf and fruit (or fruits, if they grow in a bunch), even higher - for two fruits, so that the leaves do not block each other’s light. If the top reaches the trellis, it is thrown over it and two or three internodes are placed on the wire.

For maximum yield, fruits should be collected every other day in hot weather and twice a week in cool weather. Those who garden only on weekends have to control growth by ventilation (sometimes you can leave greenhouses open all week), moderate watering, and reducing nitrogen fertilizing. The harvest will be smaller, but you won’t have to worry about overgrowths that haven’t found use.

Zucchini and company

Zucchini, like all vegetables discovered along with America, first came to the Mediterranean and spread across the continent in subsequent centuries. At the beginning of the 19th century, Russia became acquainted with white-fruited zucchini, which was grown in Greece, and therefore they were first called “Greek”. At the age of 7-10 days after pollination, white-fruited zucchini have a delicate skin and good taste, they can be fried, stewed or cooked in any other way without peeling, but after a week the skin begins to turn into bark, which can be difficult even to pierce with a knife, much less clear. Once ripe, these classic squashes store just as well as their cousins, the large, hard-skinned squashes.

In the 20th century, amazing multi-colored zucchini bred in Italy were brought to our country, where they are called “pumpkins” - “zucchini”. They are distinguished by powerful, rugged leaves with inclusions of whitish air-bearing tissue (like a watermelon), but the main thing is that the yellow, green, dark green, striped or speckled skin of the fruit does not woody: a knife can handle both a two-week mini-squash and a two-kilogram “boar” with ripening seeds. The latter can be easily cleaned months after harvesting, so if you have a lot to do at the end of the season, you can postpone preparing squash caviar until a later date.

Patisson has fruits that resemble a disk with rounded edges (or a flying saucer, it’s not for nothing that a variety with the name UFO appeared), and dense, crispy flesh. The skin of most varieties hardens when ripe, like “Greek” zucchini.

Kruknek fruits look like zucchini, curved at the stalk - it’s not for nothing that they got their apt name (translated from English it means “crooked neck”). In the company of vegetable varieties of hard-bark pumpkin, they have the most nutritious and dietaryly valuable pulp, but are more heat-loving and demanding on growing conditions compared to zucchini and squash, and therefore are inferior to them in popularity. In addition, no domestic varieties have been registered yet.

Pumpkin

In reference books, especially old ones, pumpkin may not be found among vegetable crops: it, like melon and watermelon, was classified in a separate category - “melons”. American pumpkins, hard-barked and large-fruited, have been grown in Russia for more than 400 years. Pumpkins have a strong root system, which allows them to absorb water from great depth(up to 2 meters or more) and supply large leaves, which is very important in the south. At the same time, they are quite cold-resistant, thanks to which they have moved north, including the Non-Black Earth Region. The “fat ones” show their taste qualities only in biological ripeness, and the wait for it is long: about 120 days from germination even for early varieties. However, pumpkins have a remarkable property: they ripen for another 2-3 months after they are picked, and during this time, as the starch is broken down and converted into sugars, they become sweeter. And after that they may not lose their qualities for several more months, almost until spring. For storage and ripening, they are put in a cool, but not cold room; it is not for nothing that their traditional place in a peasant hut is under a bed or bench.

When sown with seeds in open ground, pumpkins north of Voronezh do not ripen every year, so it is better to sow under cover, in large holes fertilized with manure, or plant seedlings. Plants take up a lot of space: bush plants need at least 1 m2, climbing ones - up to 4 m2. To obtain seedlings, seeds are sown no earlier than 20-25 days before planting in liter pots with a nutrient mixture, taking into account the fact that the “babies” are large (and grow, like a fairy-tale hero, “by leaps and bounds”). The seeds are planted to a depth of 2-3 cm; closer to the surface, the seedlings do not shed their hard seed coat and are strongly elongated. The temperature before germination is maintained at 23-25 °C, after the complete emergence of shoots it is reduced to 17-20 during the day and 14-15 at night. Seedlings like everyone else heat-loving crops, planted with the expectation that it will not fall under frost.

Care consists of periodic loosening, abundant watering in the first half of summer, fertilizing (if the pumpkin does not “sit” on the compost heap, where there is enough food) and pinching the vine to accelerate the ripening of the set fruits (where summer is short).

Exotic

Getting to know Momordica, Melotria, Anguria, Lagenaria and Chayote is beneficial for residents middle zone more educational than practical. But in the Krasnodar region they feel great and find admirers. In Sochi they showed me lagenaria, a pumpkin “with a waist” - a gourd from which you can make a jug. Chayote was planted in a film greenhouse at the Adler station of the Research Institute of Vegetable Growing. One plant was enough to create a huge light green umbrella by mid-summer, under which several people could hide from the unbearable heat (the vines of the “Mexican cucumber” are such that if they are not pinched in time, they will grow up to 8 meters). Numerous chayote fruits are white-greenish in color and resemble quince in shape. The pulp is dense: to prepare the salad, it had to be grated.

The pumpkin family (Cucurbitaceae) is extremely diverse. There are 90 known genera of this family, including about 760 species, most of which are distributed mainly in tropical regions of the world. Representatives of this family have mainly herbaceous type vines annual plants, however, there are a number of perennial shrub and tree species.

Among the representatives of the pumpkin family, cucumber, watermelon, melon, pumpkin, zucchini and squash are of greatest economic importance and widespread distribution. Of less practical importance are luffa, or plant sponge, gourd, or gourd, chayote, etc. Typical vegetable crops of this family are cucumber, as well as zucchini and squash (“vegetable pumpkins”), the fruits of which are consumed at technical maturity in the form of young ovaries . Watermelon, melon and pumpkin belong to a special group of vegetable plants - melons.

Cucumber

Cucumber (Cucumis sativus L.) belongs to the genus Cucurbita. This is one of the most widespread vegetable crops on the globe. Cucumber is cultivated in almost all countries of the world. It occupies the largest area in our country, where in different years it is sown on an area of ​​140-160 thousand hectares. Of the vegetable crops grown in open ground, only cabbage and tomato surpass cucumber in terms of acreage and gross production, specific gravity which is at the level of 10-12% of the total sowing of vegetable crops. However, in terms of yield, it is inferior to the main vegetable crops, and therefore its production accounts for only 5-6% of the total vegetable production in the country. At the same time, it should be noted that in protected soil, cucumber is the main crop, which produces about 70% of the vegetable products obtained here. Cucumber is cultivated in a wide variety of areas of the country. It is most widespread in central regions with favorable meteorological conditions: in Ukraine, in the North Caucasus, Volga, Central Black Earth and Central economic regions of the RSFSR, as well as in Belarus, Kazakhstan and Moldova.

Cucumber is one of the most popular vegetable crops. An important fact is that there is a practical opportunity to obtain fresh cucumber fruits throughout almost the entire year - in the winter-spring period from winter greenhouses, in the spring-summer period from spring greenhouses, greenhouses and small-sized film shelters, in the summer-autumn period from open soil. Cucumber fruits are used mainly fresh. Salted and pickled cucumbers are also of great importance for the nutrition of the population, especially in winter and winter-spring.

Cucumber is an annual herbaceous plant. Its root system consists of a main root up to 1 m long, running shallowly, and numerous lateral roots of the first and subsequent orders, located horizontally, mainly in the arable soil horizon. The stem of the cucumber is liana-shaped, branching, reaches a length of 1.5-2 m. There are also bush forms in which the length of the stem does not exceed 20 cm, and determinate forms in which growth stops above the 10-12th node, i.e. after 40-60 cm. Cucumber plants are monoecious (monocysts), the flowers are usually dioecious (Fig. 15), rarely hermaphroditic.

There are also forms of cucumber with partial dioecy - with a predominant number of female or male flowers (some samples from Japan, China and other areas of the East). This phenomenon is widely used in heterotic cucumber seed production. The fruit of a cucumber is a false berry (pumpkin) with 3-5 seed chambers (Fig. 16), of various shapes, sizes, pubescence, color, patterns and other characteristics. The fruits contain 100-400 seeds. There are also seedless, so-called parthenocarpic forms of cucumber.

At favorable conditions Cucumber seeds sprout on the 4-6th day after sowing. Optimal temperature for seed germination 25-35 °C. Normal seedlings can be obtained at a temperature not lower than 17-18 °C. For normal germination of cucumber seeds, moisture is also necessary. For seeds to swell, water needs 36-42% of their absolutely dry mass, and for germination - 20-25% more. Cucumber seeds during germination are very sensitive to lack of air, thereby reducing germination energy and germination. This explains the high responsiveness of cucumber to light and loose soils and the destructive effect of the soil crust on seeds.

When cucumber seeds germinate, the root begins to grow first, then the growth point begins to develop and the stem appears. The root system in the first growing season grows more intensively than aboveground part plants. Subsequently, the growth of the above-ground parts of plants increases. The first leaf is formed only 5-6 days after germination. 8-10 days after the first leaf, the second one is formed. After the root system has developed sufficiently, rapid growth of leaves and stems begins. Each new leaf appears after 3-4 days, then every other day, daily, and then two and more leaves in a day. The stem also grows slowly at first, and then faster, reaching an increase of up to 2 cm per day.

After the formation of 4-6 leaves in early ripening varieties, and 6-8 leaves in late ripening varieties, lateral shoots of the first order are formed on the main stem (lash), then shoots of the second order are formed on them, and so on, first in the axils of the lower leaves, then in the upper ones . Flowering begins 30-40 days after germination for early-ripening varieties and 50-60 days after germination for late-ripening varieties. The first to bloom are the flowers of the inflorescences located in the axils of the lower leaves of the main stem (in early ripening varieties - in the axils of the 2-3rd leaf, in late-ripening varieties - in the 7-12th leaf). Then the first flowers of subsequent inflorescences and the next flowers of the first inflorescence bloom. Flowering constantly spreads from the bottom up and from the main stem to the shoots of the first and then subsequent orders.

Cucumber flowers are short-lived - in the northern regions they usually open at 6-7 am, remain open for 1-2 days, then close. Unfertilized flowers can keep the corolla fresh for up to 4 days. In the south, during the hot season, they are open only half a day - from 4-5 hours to noon. The stigmas of female flowers are most receptive, and the pollen of male flowers is viable in the first hours after the flowers open, when fertilization usually occurs. Sometimes they are capable of fertilization even before the flowers bloom. Full pollen is formed at a temperature of about 20-30 °C. When the temperature drops to 14-17 °C, pollen viability decreases to 25%, and at a temperature of 7-12 °C it becomes sterile (Belik and Koziper, 1964, 1967).

There are usually significantly more male flowers in plants of monoecious forms of cucumber than female ones, and their ratio is not the same on different parts of the plant. The further the order of shoots is from the base of the stem, the greater the relative number of female flowers. The ratio of flowers also changes under the influence of environmental factors and artificial influence on plants. Decrease in temperature and increase in humidity of air and soil, reduction of daylight hours during the period of flower formation, fumigation carbon monoxide or fertilizing with carbon dioxide, pinching plants, exposing them to acetylene and other techniques help to increase the absolute and relative number of female flowers. Unfortunately, the use of these techniques is practically possible only in protected ground. When cultivating cucumber in open ground, the ratio of cucumber flowers can be influenced by nutritional conditions and changes in the pH of the environment. Increased nutrition with phosphorus, potassium, boron and nitrogen limitation contribute to increased formation of female flowers. Largest number female flowers are formed in a neutral environment (pH 5.9-6.1).

After fertilization normal conditions During cultivation, cucumber ovaries grow quickly and reach technical (removable) maturity already on the 7-12th day after fertilization (green phase). First, the ovaries rapidly grow in length, then in thickness. Subsequently, the growth of the fruit gradually slows down and stops at the beginning of ripening (the period from the green phase to the complete ripening of the seeds in the fruit, depending on the variety and growing conditions, is 1-1.5 months), the color changes, the acidity increases, lignification of the seed coats occurs, Ultimately, the consumer value of the fruit is lost.

Cucumber is one of the most heat-demanding vegetable crops. For normal plant growth, a temperature of 25-27 °C is required. At temperatures below 15 °C, plant growth and development are delayed. Long-term exposure to temperatures of 8-10 °C. can cause plants to die. When exposed to temperatures of 3-4°C for 3-4 days, plants die. Cucumber plants do not tolerate frost. Cucumber seedlings are most sensitive to cold in the cotyledon phase. When they get stronger and intensive photosynthesis begins to take place in them (in the phase of 1-2 true leaves), their resistance to cold increases significantly. Cucumber blooms at temperatures not lower than 14-16 °C, and the anthers crack at 16-17 °C. The optimal temperature for flowering and fertilization of cucumber flowers is 18-21 °C.

Long-term studies of the physiology of cold resistance of cucumber, carried out at the Scientific Research Institute of Organic Chemistry (Velik et al., 1960-1975), showed that when cucumber plants are exposed to low temperatures, a number of pathological changes occur in them, which are noted even after they are moved to favorable temperature conditions: an increase in viscosity is observed protoplasm, a decrease in water content of leaf tissues, a change in the content of ascorbic acid in the leaves, a decrease in the content of chlorophyll both due to destruction and due to the weakening of its new formation, a violation of the nitrogen-phosphorus balance, i.e. the entire metabolism is disrupted. At the same time, the pathological reaction to cooling of southern, less cold-resistant varieties is more pronounced than in northern, more cold-resistant varieties.

Cucumber is one of the most moisture-demanding vegetable crops, which is due to the weak development of the root system, its low suction power, the large evaporating surface of the plants, high water content and the intensity of transpiration. With insufficient soil moisture and low relative air humidity, cucumber plants grow poorly, develop slowly, the first, most valuable ovaries fall off, few fruits are formed, they do not reach normal size and the necessary taste qualities. Along with this, excess soil moisture, especially in combination with low temperatures, is also harmful to cucumber plants. With excessive moisture, accompanied by a decrease in air in the soil, the growth and activity of roots, and consequently the supply of plants with nutrients from the soil, weaken, which negatively affects the growth of above-ground organs and plant productivity.

Optimal soil moisture for cucumber plants in different periods growing season is within 70-80% of NV, and relative humidity air - 70-80%. Higher soil moisture is necessary in the first period of the growing season - before flowering and during intensive fruit growth. At first mass flowering a slight decrease in soil moisture is possible, facilitating a more successful fertilization process. Naturally, cucumber plants consume the greatest amount of water during the maximum increase in the assimilation surface and maximum plant size, which coincides with the period of intensive fruit growth and yield. During this period, frequent watering in small amounts is necessary.

High productivity of cucumber plants is possible only with a combination high humidity air and soil with optimal ambient temperature. At low soil and air temperatures, cucumber plants cannot fully use the available moisture, due to the fact that the root system under these conditions poorly absorbs it and its supply cannot cover the moisture consumption of the plants. At the same time, the cucumber plants wither - the so-called physiological drought occurs.

Cucumber is a light-demanding crop. Although it is more shade-tolerant than the tomato, it actively responds to improved lighting conditions by increasing the yield, which is widely used in protected soil, where additional lighting and light cultivation of cucumber are used. These are short-day or day-length neutral plants. Most cucumber varieties, when the day length is reduced to 10-12 hours (by shading in the morning-evening hours, rich in long-wave red rays) for 15-20 days during the seedling period, accelerate their development, enhance and accelerate the formation of female flowers, increase the early and overall harvest.

Zucchini and squash

Zucchini and squash belong to the species ordinary, or hard-boiled, pumpkin (Cucurbita pepo L.), being its varieties: zucchini - var. giraumontia Duch., squash - var. Patisson Duch. (Filov, 1960).

In the USSR, zucchini is grown everywhere, but in small areas, and squash is cultivated in very limited quantities. In the southern regions of the country, zucchini is grown for feed purposes and for industrial canning (both zucchini and squash), and in the central and northern regions - for home cooking and canning. Zucchini fruits are used in the form of a 7-12-day ovary as in household, and in the canning industry for the preparation of squash caviar and puree, stuffing, canning and fried consumption. Squash is used in the form of 3-5-day ovaries mainly for pickling and salting, just like cucumbers, and 7-10-day ovaries are used in home cooking.

Zucchini and squash plants are annual, usually bush-shaped (long-climbing ones are also available). Zucchini fruits are elongated, cylindrical (Fig. 17, 1), sometimes slightly curved shape. The bark of the fruit in the phase of technical maturity is soft, white or green, in the phase of physiological maturity it is woody (armored), light yellow, yellow or cream in color. The fruits of squash are bell-shaped, plate-shaped or round-flat in shape (Fig. 17, 2), white or yellow in color, without a pattern or with a pattern in the form of green stripes and spots.

Patisson and especially zucchini are early ripening crops. Under favorable conditions, their shoots appear on the 6-7th day after sowing. About a month after the emergence of seedlings, flowering begins, and after another 7-12 days marketable fruits are formed. In the most common varieties of zucchini, it takes 40-60 days from mass germination to technical (table) fruit maturity, and 100-120 days to physiological maturity; for squash, 45-85 and 100-120 days, respectively.

Zucchini and squash are heat-demanding crops, but the former is more resistant to cold. Zucchini seeds begin to germinate at 8-9.5°C, and squash seeds at a temperature of 13-14°C. The optimal temperature for seed germination and subsequent plant growth of both crops is 25-27 °C, the minimum is 12-15 °C. These crops do not tolerate frost. Zucchini plants can tolerate short-term temperature drops of up to 6-10 °C.

The plants of these crops are quite resistant to drought; watering usually increases the yield, especially squash, which is more demanding of water than zucchini. Both crops require light as well as fertility, especially the presence of organic matter in the soil.

  • Chinese bitter gourd (Momordica charantia, bitter cucumber)
  • cassabanana (sicana aromatica, musky cucumber, aromatic pumpkin)
  • gourd (lagenaria vulgaris, calabash, calabash, calabash, bottle gourd, dish gourd)
  • melotria rough (mouse watermelon, mouse melon, Mexican sour cucumber, Mexican miniature watermelon, sour gherkin)
  • What is contained in pumpkin vegetables:

    Vegetable

    Calorie content

    Carbohydrates, proteins, fats

    Vitamins

    Minerals

    Additionally

    Cucumber

    14 kcal

    Proteins - 0.8 g, fats - 0.1 g, carbohydrates - 2.5 g.

    Carotene, vitamins PP, C and group B, K, choline, biotin

    A wide range of macro- and microelements (magnesium, sodium, calcium, copper, selenium, phosphorus, chlorine, iodine, manganese, zinc, iron, cobalt, aluminum, chromium, molybdenum). Especially high in potassium.

    Contains 95-97% water. Nutrients small (up to 5%), of which half are sugars. The glycoside cucurbitacin gives cucumbers a bitter taste. Dietary fiber - 1 g.

    Pumpkin

    22 kcal

    Fats - 0.1 g. Proteins - 1 g. Carbohydrates - 4.4 g.

    Vitamins C (8 mg/%), B1, B2, B5, E, PP, carotene - 5-12 mg per 100 g fresh weight (more than in carrots), nicotinic acid, folic acid,

    Copper, cobalt, zinc, potassium, calcium, magnesium, iron salts.

    The pulp of the fruit contains sugars (from 3 to 15%), starch (15-20%), dietary fiber 2 g. Sugars include glucose, fructose, sucrose.

    Zucchini

    27 kcal

    Fats - 0.3 g. Proteins - 0.6 g. Carbohydrates - 4.6 g.

    Vitamins (mg%): C - 15, PP - 0.6, B1 and B2 - 0.03 each, B6 - 0.11, carotene - 0.03. In terms of carotene content, yellow-fruited varieties of zucchini are superior even to carrots.

    Rich in potassium - 240 mg%, iron - 0.4 mg%. Contains sodium, magnesium, phosphorus, calcium.

    Organic acids - 0.1 g. Dietary fiber 1 g.

    Squash

    19.4 kcal

    Proteins - 0.6 g. Fats - 0.1 g. Carbohydrates - 4.3 g.

    Vitamins PP, B1, B2, C.

    Potassium, magnesium, sodium, phosphorus, calcium, iron.

    Dietary fiber - 1.32 g.

    Watermelon

    32 kcal

    Carbohydrates 5.8 g. Fats - 0.1 g. Proteins - 0.6 g.

    Vitamins - thiamine, riboflavin, niacin, folic acid, carotene - 0.1-0.7 mg/%, ascorbic acid- 0.7-20 mg/%, B6, PP, C, biotin, folic acid.

    Calcium - 14 mg/%, magnesium - 224 mg/%, sodium - 16 mg/%, potassium - 64 mg/%, phosphorus - 7 mg/%, iron in organic form - 1 mg/%;

    The pulp contains 5.5 - 13% easily digestible sugars (glucose, fructose and sucrose). By the time of ripening, glucose and fructose predominate; sucrose accumulates during watermelon storage. Acids - 0.1 g (citric, malic). Dietary fiber - 0.4 g.

    Melon

    35 kcal

    Proteins - 0.6 g. Fats - 0.3 g. Carbohydrates - 7.4 g.

    Vitamins C (5-29 mg%), PP, group B, E, carotene, P, folic acid.

    Iron, potassium, sodium, calcium, magnesium, cobalt, sulfur, copper, phosphorus, chlorine, iodine, zinc, fluorine

    A little botany

    Pumpkin vegetables belong to the family of flowering plants of the same name, which is represented by annual or perennial herbs, overwintering using root tubers or lower parts of the stem; rarely shrubs and subshrubs.

    Plants of the pumpkin family are characterized by stems creeping along the ground with tendrils clinging to supports or landscape elements, hard or hairy petiolate simple leaves, single axillary flowers or flowers collected in inflorescences, and the pumpkin fruit.

    Pumpkin is a fruit characteristic of this family of plants - a berry-shaped multi-seeded fruit with a usually hard outer layer, a fleshy middle layer and a juicy inner layer. The outer layer of pumpkin is not always woody, but in cucumber and melon it is fleshy.

    Pumpkin differs from berries in the large number of seeds and the structure of the pericarp; this type of fruit is formed only from the lower ovary and includes three carpels. Pumpkin in some plants reaches very impressive sizes.

    Vegetable squash plants belong to several botanical genera pumpkin family:

    1. Genus Pumpkin.
      • - an annual herbaceous plant with large, smooth oval or spherical fleshy pumpkin fruits, covered with a hard crust and containing numerous seeds. Pumpkin keeps well.
      • - a bush variety of pumpkin with cylindrical or oblong fruits of green, yellow, cream, black or white. The surface of the fruit is smooth, warty or ribbed. The most delicious young fruits are 7-10 days old with uncoarsened seeds. Zucchini is one of the most common varieties of zucchini.
      • – a type of pumpkin, an annual herbaceous plant, cultivated everywhere. The fruits of the plant are plate-shaped or bell-shaped with jagged edges; yellow, white, green, orange color. Young fruits, 5-7-day-old ovaries with dense pulp and uncoarsened seeds, are used for food.
      The fruits of pumpkin, squash and squash are usually eaten after heat treatment: stewed, boiled, fried, baked. Pumpkin is used to make puree for baby food; from zucchini and pumpkin - caviar. Squash and zucchini are canned and pickled.
    2. Genus Cucumber.
      • has a juicy multi-seeded, green fruit, usually with pronounced pimples. Cucumber fruits of 5-7 day old ovaries with underdeveloped seeds are used as food. As it ripens, the skin becomes rougher, the seeds become tough, and the pulp becomes tasteless. Cucumber is usually eaten raw, added to salads, canned, salted, or pickled.
      • melon culture, in our understanding, is more of a fruit than a vegetable. The melon fruit has a spherical or elongated shape, green, yellow, brownish or white in color. The weight of the melon fruit reaches 10 kg. Ripe fruits are eaten; it takes 2-6 months for a melon to ripen. Melon contains up to 18% sugars. Melon is often eaten raw, and candied fruits are also made from it and dried.
      • - cultivated plant American Indians, growing in the tropics and subtropics. It has small (up to 8 cm long, 4 cm in diameter, weight 30-50 grams) cylindrical fruits, covered with fleshy soft spines. Young green fruits taste similar to a regular cucumber. Ripe yellow-orange fruits are not edible.
      • - a herbaceous vine cultivated in America, New Zealand, and Israel. The fruits look like a small oval melon with soft, sparse spines. Fruit weight up to 200 grams. Ripe fruits are yellow, orange or red, the flesh is green jelly-like with numerous light green seeds up to 1 cm long, the peel is hard and inedible. Kiwano tastes like banana and cucumber. They are eaten fresh, added to milk and fruit shakes, salads, and canned. Rich in vitamin C and B vitamins.
    3. Luffa family.
      Typically, sponges, filters, mats, and insulating materials are made from the fruits of plants of this genus. How vegetables are cultivated annual vines .
      • Egyptian luffa (cylindrical luffa), cultivated in countries with tropical and subtropical climates, has smooth, ribbed, cylindrical or club-shaped fruits up to 50-70 cm long, 6-10 cm in diameter.
      • Luffa sharp-ribbed (luffa faceta), growing in Pakistan and India and introduced to a number of other countries, has a club-shaped fruit with protruding longitudinal ribs, up to 30-35 cm long, 6-10 cm in diameter.
      The pulp of young fruits is juicy and slightly sweet, reminiscent of a cucumber in taste. As the luffa fruit ripens, its flesh becomes dry and fibrous. Young fruits are eaten raw, stewed, boiled, or canned.
    4. Rod Chayote.
      - a perennial climbing plant reaching 20 meters in length, cultivated in countries with tropical and subtropical climates. Edible chayote produces up to 10 root tubers with white pulp weighing up to 10 kg. The fruits are round or pear-shaped with a thin, durable peel; whitish, light yellow or green; 7-20 cm long and weighing up to a kilogram. Inside the fruit there is one white flat-oval seed 3-5 cm in size. The pulp of the fruit is sweetish, juicy, rich in starch. All parts of the plant are edible. Most often, unripe fruits are eaten (stewed, boiled, raw added to salads). The seeds are fried. The tubers are cooked like potatoes. Since chayote edible has tubers used for food, it can also be classified as a tuber vegetable.
    5. Rod Watermelon.
      – annual herbaceous plant, melon crop. The fruit of the watermelon is spherical, oval; fruit color from white and yellow to dark green with a pattern in the form of stripes or spots; the pulp is very juicy, sweet, often red, pink or crimson, rarely yellow or whitish. Watermelon pulp contains up to 13% easily digestible sugars. Watermelon is eaten raw as a fruit, less often salted.
    6. Benicaza clan.
      – a herbaceous vine cultivated in the countries of South, Southeast, and East Asia. The fruits are spherical or oblong in shape, large, on average 35 cm in length, but reach 2 meters. Young fruits are velvety, and as they ripen they become covered with a waxy coating, so they can be stored for a long time. Wax pumpkin is eaten raw, candies and sweets are made from it, and boiled. The seeds are eaten fried; young greens can be used in salads.
    7. Genus Momordica.
      • is an annual herbaceous vine grown in warm climates, mainly in South and Southeast Asia. The fruits are medium-sized (10 cm in length, 4 cm in diameter) with a rough surface, wrinkled, warty. The shape of the pumpkin is oval, spindle-shaped. Unripe green fruits with dense, juicy, crispy pale green flesh have a bitter taste. As the fruits ripen, they acquire a bright yellow or orange color and become even more bitter. Unripe fruits are eaten, which are soaked for several hours in salt water to remove bitterness before stewing or boiling. Young fruits are preserved. Young shoots with flowers and leaves are stewed. The fruit contains large amounts of iron, calcium, potassium and carotene.
      • - another edible cultivated momordica that grows in India. Its fruits are oval-round, warty, and become yellow or orange as they ripen. The fruits are eaten boiled or fried. The fruit is rich in carotene, calcium, phosphorus.
    8. Genus Lagenaria.
      - an annual liana of the subtopic and tropical zones, cultivated in Africa, China, South Asia, South America, the young fruits of which are eaten, and from the old ones they are made into vessels, dishes, smoking pipes, musical instruments(the instrument is called “kora”). Unripe fruits with loose pulp and a bitter taste are used for food. Edible oil is made from the seeds.
    9. Genus Cyclantera.
      from South America, cultivated in the tropics and subtropics. Small oval fruits, narrowed at both ends (length 5-7 cm, diameter 3 cm) with thick juicy walls and 8-10 black seeds in the inner cavity, are eaten young (when the skin of the fruit is green). As the squash ripens, it turns cream or pale green. Salads are made from raw fruits, or the vegetable is eaten stewed. Young shoots and flowers are also used for food.
    10. Genus Trichosanth.
      - a herbaceous vine cultivated in the tropics and subtropics of Australia, South and Southeast Asia. The fruit is very long, reaching up to 1.5 meters in length and up to 10 cm in diameter, and as it grows it often acquires bizarre curves. The color of the ripe fruit is orange, the skin is thin, the flesh is red, slimy, and tender. A very popular pumpkin vegetable in Asian cuisine. The greens of the plant (leaves, stems, tendrils) are used in cooking as a green vegetable for salads.
    11. Genus Melotria.
      - a perennial herbaceous vine, sometimes cultivated for its small (2-3 cm in length) edible fruits, similar in taste to cucumbers. The fruits are eaten unripe. In addition to the round-oval green-striped pumpkin fruits, the plant produces edible tubers comparable in size and shape to sweet potato tubers. The weight of the tuber reaches 400 grams. The tubers, which taste like a cross between a radish and a cucumber, are used in salads, the fruits are eaten raw, canned, and pickled.
    12. Genus Tladianta.
      - a perennial herbaceous vine that grows in the Russian Far East, Primorsky Krai, and Northeast China. It is cultivated to a limited extent as an edible and ornamental plant. Ripe fruits are similar in size and shape to small cucumbers, only soft red with barely noticeable stripes. The pulp of the fruit is sweet and contains many small dark seeds. Ripe fruits are picked ripe at the end of September. They are eaten raw, made into jam and marmalade. Green fruits can be preserved in the same way as cucumbers.
    13. Clan Sicana.
      - a large herbaceous vine cultivated in the tropical zone of South and Central America. Ripe fruits are red, orange, burgundy or purple, elongated, slightly curved, large (reach 60 cm in length, 11 cm in diameter and weigh up to 4 kg) with a glossy smooth rind. Flesh orange or yellow color, very sweet and juicy, tastes like melon. In the center of the fruit there is a fleshy core with many oval seeds. Young pumpkins are eaten raw in salads, fried, added to soups and meat dishes. You can make jam from ripe fruits, but they are best eaten raw. Well kept.

    Uses of pumpkin vegetables

    Pumpkin vegetables are quite widely used in nutrition. They are stewed, baked, fried, eaten raw, added to salads, pickled and salted, and even made into caviar and puree. Pumpkin and zucchini are widely used in children's and dietary nutrition. Some cucurbits (such as watermelon, melon and ripe cassabanana) are eaten as fruit. Pumpkin vegetables are rich in vitamin C, carotene, contain B vitamins, and microelements.

    For medicinal purposes, pumpkin vegetables are used more often to improve metabolism and digestion and the activity of the gastrointestinal tract, as a diuretic and choleretic. Cucumber is actively used in cosmetology as a component of lotions and creams; it helps the skin get rid of acne and makes it velvety. Pumpkin seeds and Cyclantera edible seeds have anthelmintic effect.

    Pumpkin fruits, tops and old chayote tubers are used in livestock farming as feed. Zucchini fruits are also used to feed poultry and some livestock.

    Parts of pumpkin plants are also used for non-food purposes. Thus, hats and mats are woven from chayote and gourds, and washcloths are made from luffa. Bottle gourds are still used to make dishes, as well as smoking pipes, musical instruments, and souvenirs.

    Many plants of the pumpkin family are climbing vines that can cling to support with their tendrils. Therefore, some plants (for example, Peruvian cucumber) are used as decorative street bindweeds, to create shady gazebos and decorate balconies and walls of buildings.

    Pumpkin

    Family Cucurbitaceae

    Genera - 120 (8), species - 700 (9)

    Distribution - tropical and subtropical regions

    Life form - annual and perennial herbs, lianas

    Pollination - insects

    Fruits - berry or pumpkin, less often capsules, seeds are spread by animals

    Absent in the natural flora of the temperate zone

    The family belongs to the monotypic order Cucurbitales. Its representatives are characterized by unisexual flowers with a sphenoletal corolla and a lower ovary (some species are dioecious). Large, well-developed nectaries of female flowers are filled with very sweet nectar and are available to everyone, so pumpkin flowers are visited by about 150 species of insects. IN male flowers insects feed on highly nutritious pollen.

    As a rule, cucurbits are fast-growing plants with climbing stems with tendrils (metamorphosed shoots) and large leaves. The fruits - pumpkins - sometimes reach colossal sizes and weigh more than 100 kg.

    Mainly in the ruderal flora of the southern part of Russia, about ten wild or introduced species of pumpkin can be found sporadically. Among them, the most naturalized are the white steppe ( Bryonia alba) and the alien North American species lobed-leaved bladderwort ( Echinocys tislobata). The bladderwort, or echinocystis, grows very quickly and can reach a height of 10 m over the summer; it is pollinated not only by insects, but also by the wind.

    However, the family is interesting primarily for its cultivated food, ornamental and industrial plants, such as pumpkin and zucchini ( Cucurbita rero, originally from America), cucumber ( Cucumis sativus), melon ( Melo sativa), luffa ( Luffa cylindrica, these three crops come from India), watermelon ( Citrullus lanatus, originally from Africa).

    Spitting fruits. In the southern steppe regions of Russia, an unusual plant from the pumpkin family grows - “mad cucumber” (Ecballium elaterium), in which the seeds, surrounded by mucus, are forcefully ejected from the fruit under the influence of turgor pressure.

    The largest fruits. Many countries still hold competitions for large-fruited pumpkins. In Canada, fruits weighing 284 and 287 kg were obtained, and in the USA, a record fruit weighing 302 kg was grown in 1986.

    Based on materials from the textbook Higher Plants: a short course in taxonomy with the basics of plant science. Authors Mirkin B.M., Naumova L.G., Muldashev A.A., 2001

    This family contains 130 genera and about 900 species, growing primarily in tropical and subtropical regions from tropical rainforests to deserts. Africa, as well as Asia and America, are especially rich in wild pumpkin plants. In temperate latitudes, there are relatively few representatives of this family. Pumpkin annual or perennial, climbing or creeping herbs, less often shrubs, with alternate, palmate or pinnate (less often separate) or simple leaves. Most members of the family are equipped with antennae, which are modified shoots.

    Flowers are usually unisexual, mono- or dioecious, rarely bisexual, actinomorphic, solitary or collected in axillary inflorescences - bunches, racemes, panicles, umbrellas. The perianth, together with the base of the staminate filaments, forms a floral tube attached to the ovary; the calyx is five-lobed. The corolla is fused-petalled, five-lobed or five-parted (to dissected), yellow or white, less often greenish or red. Stamens 2-3-5, very rarely 2, more often 5, of which usually 4 are fused in pairs; sometimes all stamen filaments or anthers of all stamens grow together. The gynoecium consists of 3, less often of 5 or 4 carpels; ovary inferior (sometimes semi-inferior), usually three-lobed, with numerous ovules in each ovule; column with thickened fleshy stigmas.

    Academician N. Vavilov recalled that he saw the original cucumbers of the prophets - “gooseberry pumpkin” - in the desert of Jericho on the shores of the Dead Sea. Their fruits are the size of a small plum, covered with thorns, edible and taste like lightly salted cucumbers: a little salty.

    Cucurbitaceae are primarily insect-pollinated plants.

    Common pumpkin

    Large, well-developed nectaries, filled with very sweet nectar, have such a structure that they are accessible to everyone. Therefore, pumpkin flowers are visited by about 150 species of insects. Flowers of many species do not have strong aroma and lure pollinators either with large bright yellow corollas (like pumpkins, watermelons, cucumbers, etc.), or their petals have the ability to reflect ultraviolet rays invisible to our eyes. The main pollinators of cucurbits are bees (especially the honey bee) and steppe ants, as well as wasps and bumblebees. Insects visit male flowers more often, since pollen serves as excellent food for insects; More than a hundred useful substances were found in it, including proteins, fats and many vitamins. The vast majority of members of the family have fruits similar in structure to berries, but very unique, called “pumpkin”. Classic examples of this type of fruit are pumpkin, watermelon, melon and cucumber. In pumpkin plants, sometimes some of the most ripe and viable seeds germinate inside the fruit. As a result, when an overripe fruit cracks, not only seeds fall out of it, but also fully developed seedlings, the roots of which quickly penetrate into the loose soil and take root. The most modern classification of the pumpkin family belongs to the English botanist C. Geoffrey (1980). According to this classification, the family is divided into two subfamilies and 8 tribes.

    Pumpkin flower. Photo: Christoslilu


    Pumpkin. Photo: Maja Dumat

    There are almost no trees in the pumpkin family. Only one. Since all sorts of botanical rarities are usually found on ocean islands, the cucumber tree also grows on the island. Socotra Island in the Indian Ocean. Dendrositsios, as the tree is called, is perhaps the furthest away from its liana-like ancestors than any other pumpkin plant. Its seven-meter trunk is not flexible and thin, but swollen: like a curbstone. It is soft and full of water, like a baobab tree. There is something elephantine about this tree, and it is juicy, like all pumpkin trees. There are absolutely no side branches. Only at the top does the trunk suddenly branch into two or three branches. Those, in turn, branch many times. It looks like a lush bush is formed. And only cucumber leaves, rough, rough, with thorns along the edges. And the flowers are like cucumbers, only collected in large clusters.

    Adapting to difficult desert conditions, pumpkin plants have developed an original defense. From Africa to India you can find colocynth - a bitter gourd or bitter watermelon, with completely inedible pulp, hard, dry or bitter. Seeds do not germinate in light. And not because light is harmful to them. The reason is more subtle. If the seeds sprouted openly, in the light, the rays of the sun would incinerate the tender seedlings. If the seed is in the dark, it means it has fallen deep into the soil. By the time it makes its way to the light, it will have time to strengthen the root. Such a shoot will not die.

    Large subfamily Cucurbitaceae (Gucurbitoideae) contains 7 tribes, including 110 genera. One of the most primitive representatives of the pumpkin subfamily is the genus Telfairia, which belongs to the tribe Joliffieae. The same tribe includes the genera Momordica and Thladiantha. The paleotropical genus Momordica includes about 45 species, most of which are annual climbing vines with thin stems and long-petioled leaves, cultivated in tropical countries of Asia. There are about 15 species in the Tladianta genus, native to East and Southeast Asia.

    To another tribe (tribe Benincaseae - Benincaseae) include the genera acanthosicyos (Acanthosicyos, 2 species), squirting cucumber(Ecballium. monotypic genus), watermelon (Citrullus) and others. Acanthosicios is a typical desert plant with tendrils turned into spines and a thick, sometimes very long root. Of the other genera of the same tribe, watermelon (Citrullus) should be mentioned first of all. These are annual or perennial pubescent creeping herbs with dissected leaves. The flowers are large, solitary, unisexual or bisexual; their sepals and petals grow together at the base. The corolla is yellow, there are 5 stamens. The stigma is three-lobed, the ovary is three-lobed. The fruit is a multi-seeded juicy pumpkin with flat seeds. Watermelon is common in tropical and subtropical regions of the world. The genus includes 3 species: edible watermelon, colocynth, watermelon without buds, the range of which is limited to the Namib Desert region in South-West Africa. The tendrils of this plant are completely reduced. The same tribe, in addition to watermelon, includes the genera Bryonia, Lagenaria, Benincasa and some others. The genus perestupen includes 12 species growing in the Canary Islands, the Mediterranean, Europe, Western and Central Asia. These climbing perennial tall plants can be found in the Caucasus and Central Asia among shrubs, on forest edges, in ravines, and also as weeds near fences and walls. The antennae of the feet have a particularly fine sensitivity to the touch of hard objects, causing them to grow very quickly and bend towards the irritant. In a relatively short period of time, the tendrils tightly wrap around the support, reliably holding the heavy mass of the plant suspended. Small, inconspicuous flowers of the footweed, collected in sparse inflorescences, hardly stand out against the background of the leaves and have a very faint smell, but insects willingly visit them, attracted by the ultraviolet pattern of the corolla, invisible to our eyes. In the pumpkin family, only representatives of this genus have a true berry. Numerous small seeds of the footfoot are covered with durable and strong armor. The embryo of the seed that has passed through the bird's digestive tract remains intact and capable of germination. At the slightest touch, overripe berries are crushed, and the seeds stick with mucus to the skin of the animal that touches them, thus spreading too. Some species of the genus are poisonous plants, some are used in a number of countries as medicinal plants. Berries and roots containing the glycosides brionin and brionidin are especially poisonous.

    To the tribe Cucurbiteae There are 12 genera, including the pumpkin genus, which has about 20 species that grow wild exclusively in America. Some of them have long been introduced into culture. To date, there are a huge number of varieties of food, fodder and decorative pumpkins. Representatives of the genus - perennial or annual herbaceous plants with a rounded or faceted stem, often prostrate, sometimes climbing. The genus Luffa occupies a somewhat isolated position in the pumpkin tribe, having much in common with the next tribe, the Cyclantheraceae. There are 5 species in the genus.

    To the tribe Cyclanthereae There are 12 genera, growing mainly in the tropical and subtropical zones. In all representatives of these genera, the stamen filaments are fused, the fruits are spiny, often dehiscent. An example is the large American genus Echinocystis, which unites about 15 species, with white small monoecious flowers. Another interesting genus of the tribe is Cyclanthera, which includes about 15 species. All of them are native to Central and tropical South America. These are herbaceous climbing plants with a pubescent stem and five- to seven-lobed leaves. Yellow, green or white flowers without nectaries. Therefore, plants are pollinated mainly by wind. Ripe fruits suddenly open with two valves, each of which bends back with force. As a result, the seeds are scattered over quite significant distances. The Sicyoeae tribe is characterized by female flowers with a single-locular, less often three-locular ovary; The stamens of male flowers are fused, with sinuous anthers. The tribe includes 6 genera, of which the most interesting are Sicyos and Sechium. The genus Sitsios includes about 15 species native to the Hawaiian Islands, Polynesia, Australia and tropical America. Most of them are liana-like annual herbs with alternate, slightly lobed or angular thin leaves. The genus Schizopepon, forming a separate tribe Schizopeponeae, has only 5 species, distributed from Northern India to East Asia.

    To the tribe trichosanths (Trichosaiitheae) includes 10 genera. All are characterized by long-tubular flowers with fringed or whole petals. The fruits are cylindrical or triangular, often indehiscent or opening into three equal parts. The best known is the genus Trichosangpes, which includes about 15 species distributed in Southeast Asia and Australia. The morphological structure of these plants is common for most pumpkin plants - vine-like appearance, wide lobed leaves, unisexual flowers; the men's ones are collected in a sparse brush, and the women's ones are single. Often the petals are spirally bent inward, which is why long-tubular flowers take on several unusual look. Unripe fruits are edible, which is why some of these species have been introduced into cultivation. In addition, ripe fruits are often very showy, which, together with the abundant lush green leaves, makes the plants very decorative. Also interesting is the monotypic Indo-Malaysian genus Hodgsonia, which is close to Trichosanthes.

    To the tribe Melothrieae There are 34 genera, including the cucumber genus, represented by more than 25 species, distributed mainly in Africa. Only a few species are found in Asia. A number of species are cultivated as food plants for their edible fruits. Among other genera of the tribe, one can also name interesting genera Corallocarpus, Melotria and Cedrostis. The genus Cedrostis (about 35 species) is distributed in tropical and subtropical regions of Africa, Madagascar, tropical Asia and Malesia. In the steppes of South Africa, you can often find liana-like, densely pubescent, gray-green, herbaceous plants belonging to the genus Cedrostis creeping along the ground.

    Subfamily Zanonioideae includes 18 genera, which are combined into one tribe. Most plants of this subfamily live in tropical and subtropical countries. The monotypic Ido-Malaysian genus Zanonia most fully characterizes the entire subfamily. Its flowers are dioecious with a two-three-locular ovary; the fruits are hairy, club-shaped capsules that open with a lid when ripe, scattering light, winged, flattened seeds that are dispersed by the wind over long distances. The genus Actinostemma, numbering about 6 species, is distributed in East Asia and the Himalayas. All of them are perennial herbaceous vines with climbing stems. One of the species is found within Russia.

    Pumpkin vegetables

    What are pumpkin vegetables

    Pumpkin vegetables- These are vegetable plants belonging to the Pumpkin family, in which the fruit - pumpkin - is used as food. Watermelon, melon and some types of pumpkin are melon crops (melon is a special field with sandy or loamy soils in steppe arid areas where there is a lot of sun, heat air, no shade and no other plants except the crop being grown)..

    TO pumpkin vegetables The following vegetable crops include:

    • zucchini
    • common cucumber
    • watermelon
    • luffa (wet gourd)
    • pumpkin
    • squash (plate pumpkin)
    • chayote (Mexican cucumber)
    • wax gourd (benicaza, winter squash)
    • Momordica dioecious (prickly pumpkin, kantola)
    • Peruvian cucumber (Cyclantera edible)
    • Antillean cucumber (anguria, horned cucumber, watermelon cucumber, hedgehog cucumber)
    • Chinese bitter gourd (Momordica charantia, bitter cucumber)
    • kiwano (African cucumber, horned melon)
    • snake gourd (trichosanthus serpentine, snake cucumber)
    • tladiantha doubta (red cucumber)
    • cassabanana (sicana aromatica, musky cucumber, aromatic pumpkin)
    • gourd (lagenaria vulgaris, calabash, calabash, calabash, bottle gourd, dish gourd)
    • melotria rough (mouse watermelon, mouse melon, Mexican sour cucumber, Mexican miniature watermelon, sour gherkin)

    What is contained in pumpkin vegetables:

    Vegetable

    Calorie content

    Carbohydrates, proteins, fats

    Vitamins

    Minerals

    Additionally

    Cucumber

    Proteins - 0.8 g, fats - 0.1 g, carbohydrates - 2.5 g.

    Carotene, vitamins PP, C and group B, K, choline, biotin

    A wide range of macro- and microelements (magnesium, sodium, calcium, copper, selenium, phosphorus, chlorine, iodine, manganese, zinc, iron, cobalt, aluminum, chromium, molybdenum). Especially high in potassium.

    Contains 95-97% water. There are few nutrients (up to 5%), of which half are sugars. The glycoside cucurbitacin gives cucumbers a bitter taste. Dietary fiber - 1 g.

    Pumpkin

    Fats - 0.1 g. Proteins - 1 g. Carbohydrates - 4.4 g.

    Vitamins C (8 mg/%), B1, B2, B5, E, PP, carotene - 5-12 mg per 100 g fresh weight (more than in carrots), nicotinic acid, folic acid,

    Copper, cobalt, zinc, potassium, calcium, magnesium, iron salts.

    The pulp of the fruit contains sugars (from 3 to 15%), starch (15-20%), dietary fiber 2 g. Sugars include glucose, fructose, sucrose.

    Zucchini

    Fats - 0.3 g. Proteins - 0.6 g. Carbohydrates - 4.6 g.

    Vitamins (mg%): C - 15, PP - 0.6, B1 and B2 - 0.03 each, B6 - 0.11, carotene - 0.03. In terms of carotene content, yellow-fruited varieties of zucchini are superior even to carrots.

    Rich in potassium - 240 mg%, iron - 0.4 mg%. Contains sodium, magnesium, phosphorus, calcium.

    Organic acids - 0.1 g. Dietary fiber 1 g.

    Squash

    Proteins - 0.6 g. Fats - 0.1 g. Carbohydrates - 4.3 g.

    Vitamins PP, B1, B2, C.

    Potassium, magnesium, sodium, phosphorus, calcium, iron.

    Dietary fiber - 1.32 g.

    Watermelon

    Carbohydrates 5.8 g. Fats - 0.1 g. Proteins - 0.6 g.

    Vitamins - thiamine, riboflavin, niacin, folic acid, carotene - 0.1-0.7 mg/%, ascorbic acid - 0.7-20 mg/%, B6, PP, C, biotin, folic acid.

    Calcium - 14 mg/%, magnesium - 224 mg/%, sodium - 16 mg/%, potassium - 64 mg/%, phosphorus - 7 mg/%, iron in organic form - 1 mg/%;

    The pulp contains 5.5 - 13% easily digestible sugars (glucose, fructose and sucrose). By the time of ripening, glucose and fructose predominate; sucrose accumulates during watermelon storage. Acids - 0.1 g (citric, malic). Dietary fiber - 0.4 g.

    Melon

    Proteins - 0.6 g. Fats - 0.3 g. Carbohydrates - 7.4 g.

    Vitamins C (5-29 mg%), PP, group B, E, carotene, P, folic acid.

    Iron, potassium, sodium, calcium, magnesium, cobalt, sulfur, copper, phosphorus, chlorine, iodine, zinc, fluorine

    A little botany

    Cucurbits belong to the family of flowering plants of the same name, which are represented by annual or perennial herbs that overwinter using root tubers or lower parts of the stem; rarely shrubs and subshrubs.

    Plants of the pumpkin family are characterized by stems creeping along the ground with tendrils clinging to supports or landscape elements, hard or hairy petiolate simple leaves, single axillary flowers or flowers collected in inflorescences, and the pumpkin fruit.

    Pumpkin is a fruit characteristic of this family of plants - a berry-shaped multi-seeded fruit with a usually hard outer layer, a fleshy middle layer and a juicy inner layer. The outer layer of pumpkin is not always woody, but in cucumber and melon it is fleshy.

    Pumpkin differs from berries in the large number of seeds and the structure of the pericarp; this type of fruit is formed only from the lower ovary and includes three carpels. Pumpkin in some plants reaches very impressive sizes.

    Vegetable squash plants belong to several botanical genera pumpkin family:

    1. Genus Pumpkin.
    2. Common pumpkin is an annual herbaceous plant with large smooth oval or spherical fleshy pumpkin fruits, covered with a hard crust and containing numerous seeds. Pumpkin keeps well.
    3. Zucchini is a bush variety of pumpkin with cylindrical or oblong fruits of green, yellow, cream, black or white. The surface of the fruit is smooth, warty or ribbed. The most delicious young fruits are 7-10 days old with uncoarsened seeds. Zucchini is one of the most common varieties of zucchini.
    4. Patisson (plate pumpkin) is a type of common pumpkin, an annual herbaceous plant cultivated everywhere. The fruits of the plant are plate-shaped or bell-shaped with jagged edges; yellow, white, green, orange color. Young fruits, 5-7-day-old ovaries with dense pulp and uncoarsened seeds, are used for food.
    5. The fruits of pumpkin, squash and squash are usually eaten after heat treatment: stewed, boiled, fried, baked. Pumpkin is used to make puree for baby food; from zucchini and pumpkin - caviar. Squash and zucchini are canned and pickled.

    6. Genus Cucumber.
    7. The common cucumber (cucumber) has a juicy, multi-seeded, green fruit, usually with pronounced pimples. Cucumber fruits of 5-7 day old ovaries with underdeveloped seeds are used as food. As it ripens, the skin becomes rougher, the seeds become tough, and the pulp becomes tasteless. Cucumber is usually eaten raw, added to salads, canned, salted, or pickled.
    8. Melon is a melon crop, in our understanding it is more of a fruit than a vegetable. The melon fruit has a spherical or elongated shape, green, yellow, brownish or white in color. The weight of the melon fruit reaches 10 kg. Ripe fruits are eaten; it takes 2-6 months for a melon to ripen. Melon contains up to 18% sugars. Melon is often eaten raw, and candied fruits are also made from it and dried.
    9. Anguria (Antillean cucumber, horned cucumber, watermelon cucumber, hedgehog cucumber) is a cultivated plant of American Indians, growing in the tropics and subtropics. It has small (up to 8 cm long, 4 cm in diameter, weight 30-50 grams) cylindrical fruits, covered with fleshy soft spines. Young green fruits taste similar to a regular cucumber. Ripe yellow-orange fruits are not edible.
    10. Kiwano (African cucumber, horned melon) is a herbaceous vine cultivated in America, New Zealand, and Israel. The fruits look like a small oval melon with soft, sparse spines. Fruit weight up to 200 grams. Ripe fruits are yellow, orange or red, the flesh is green jelly-like with numerous light green seeds up to 1 cm long, the peel is hard and inedible. Kiwano tastes like banana and cucumber. They are eaten fresh, added to milk and fruit shakes, salads, and canned. Rich in vitamin C and B vitamins.

      Pumpkin vegetables

    11. Luffa family.
      Typically, sponges, filters, mats, and insulating materials are made from the fruits of plants of this genus. The annual vines Luffa Egyptian and Luffa ribbed are cultivated as vegetables.
    12. Egyptian luffa (luffa cylindrical), cultivated in countries with tropical and subtropical climates, has smooth, ribbed cylindrical or club-shaped fruits up to 50-70 cm long, 6-10 cm in diameter.
    13. Luffa sharp-ribbed (luffa granata), native to Pakistan and India and introduced to a number of other countries, has a club-shaped fruit with protruding longitudinal ribs, up to 30-35 cm long, 6-10 cm in diameter.
    14. The pulp of young fruits is juicy and slightly sweet, reminiscent of a cucumber in taste. As the luffa fruit ripens, its flesh becomes dry and fibrous. Young fruits are eaten raw, stewed, boiled, or canned.

    15. Rod Chayote.
      Edible chayote (Mexican cucumber) is a perennial climbing plant reaching 20 meters in length, cultivated in countries with tropical and subtropical climates. Edible chayote produces up to 10 root tubers with white pulp weighing up to 10 kg. The fruits are round or pear-shaped with a thin, durable peel; whitish, light yellow or green; 7-20 cm long and weighing up to a kilogram. Inside the fruit there is one white flat-oval seed 3-5 cm in size. The pulp of the fruit is sweetish, juicy, rich in starch. All parts of the plant are edible. Most often, unripe fruits are eaten (stewed, boiled, raw added to salads). The seeds are fried. The tubers are cooked like potatoes. Since Chayote edible has tubers used for food, it can also be classified as a tuber vegetable.
    16. Rod Watermelon.
      Watermelon is an annual herbaceous plant, a melon crop. The fruit of the watermelon is spherical, oval; fruit color from white and yellow to dark green with a pattern in the form of stripes or spots; the pulp is very juicy, sweet, often red, pink or crimson, rarely yellow or whitish. Watermelon pulp contains up to 13% easily digestible sugars. Watermelon is eaten raw as a fruit, less often salted.
    17. Benicaza clan.
      Benicaza (wax gourd, winter squash) is a herbaceous vine cultivated in the countries of South, Southeast, and East Asia. The fruits are spherical or oblong in shape, large, on average 35 cm in length, but reach 2 meters. Young fruits are velvety, and as they ripen they become covered with a waxy coating, so they can be stored for a long time. Wax pumpkin is eaten raw, candies and sweets are made from it, and boiled. The seeds are eaten fried; young greens can be used in salads.
    18. Genus Momordica.
    19. Momordica charantia (bitter cucumber, bitter gourd) is an annual herbaceous vine grown in warm climates mainly in South and Southeast Asia. The fruits are medium-sized (10 cm in length, 4 cm in diameter) with a rough surface, wrinkled, warty. The shape of the pumpkin is oval, spindle-shaped. Unripe green fruits with dense, juicy, crispy pale green flesh have a bitter taste. As the fruits ripen, they acquire a bright yellow or orange color and become even more bitter. Unripe fruits are eaten, which are soaked for several hours in salt water to remove bitterness before stewing or boiling. Young fruits are preserved. Young shoots with flowers and leaves are stewed. The fruit contains large amounts of iron, calcium, potassium and carotene.
    20. Momordica dioecious (prickly gourd, kantola) is another edible cultivated momordica that grows in India. Its fruits are oval-round, warty, and become yellow or orange as they ripen. The fruits are eaten boiled or fried. The fruit is rich in carotene, calcium, phosphorus.
    21. Genus Lagenaria.
      Lagenaria vulgaris (gourd, calabash, calabash, calabash, bottle gourd, table gourd) is an annual liana of the subtopic and tropical zones, cultivated in Africa, China, South Asia, South America, the young fruits of which are used as food, and from the old ones they are made into vessels, dishes, smoking pipes, musical instruments (the instrument is called “kora”). Unripe fruits with loose pulp and a bitter taste are used for food. Edible oil is made from the seeds.
    22. Genus Cyclantera.
      Cyclantera edible (Peruvian cucumber) is native to South America and is cultivated in the tropics and subtropics. Small oval fruits, narrowed at both ends (length 5-7 cm, diameter 3 cm) with thick juicy walls and 8-10 black seeds in the inner cavity, are eaten young (when the skin of the fruit is green). As the squash ripens, it turns cream or pale green. Salads are made from raw fruits, or the vegetable is eaten stewed. Young shoots and flowers are also used for food.
    23. Genus Trichosanth.
      Trichosanth serpentine (snake gourd, snake cucumber) is a herbaceous vine cultivated in the tropics and subtropics of Australia, South and Southeast Asia. The fruit is very long, reaching up to 1.5 meters in length and up to 10 cm in diameter, and as it grows it often acquires bizarre curves. The color of the ripe fruit is orange, the skin is thin, the flesh is red, slimy, and tender. A very popular pumpkin vegetable in Asian cuisine. The greens of the plant (leaves, stems, tendrils) are used in cooking as a green vegetable for salads.
    24. Genus Melotria.
      Melothria rough (mouse melon, mouse watermelon, Mexican sour cucumber, Mexican miniature watermelon, sour gherkin) is a perennial herbaceous vine, sometimes cultivated for its small (2-3 cm in length) edible fruits, similar in taste to cucumbers. The fruits are eaten unripe. In addition to the round-oval green-striped pumpkin fruits, the plant produces edible tubers comparable in size and shape to sweet potato tubers. The weight of the tuber reaches 400 grams. The tubers, which taste like a cross between a radish and a cucumber, are used in salads, the fruits are eaten raw, canned, and pickled.
    25. Genus Tladianta.
      Tladianta dubious (red cucumber) is a perennial herbaceous vine that grows in the Russian Far East, Primorsky Krai, and Northeast China. It is cultivated to a limited extent as an edible and ornamental plant. Ripe fruits are similar in size and shape to small cucumbers, only soft red with barely noticeable stripes. The pulp of the fruit is sweet and contains many small dark seeds. Ripe fruits are picked ripe at the end of September. They are eaten raw, made into jam and marmalade. Green fruits can be preserved in the same way as cucumbers.
    26. Clan Sicana.
      Cassabanana (sicana fragrant, musk cucumber, fragrant pumpkin) is a large herbaceous vine cultivated in the tropical zone of South and Central America. Ripe fruits are red, orange, burgundy or purple, elongated, slightly curved, large (reach 60 cm in length, 11 cm in diameter and weigh up to 4 kg) with a glossy smooth rind. The pulp is orange or yellow, very sweet and juicy, and tastes like melon. In the center of the fruit there is a fleshy core with many oval seeds. Young pumpkins are eaten raw in salads, fried, and added to soups and meat dishes. You can make jam from ripe fruits, but they are best eaten raw. Well kept.

    Uses of pumpkin vegetables

    Pumpkin vegetables are quite widely used in nutrition. They are stewed, baked, fried, eaten raw, added to salads, pickled and salted, and even made into caviar and puree. Pumpkin and zucchini are widely used in children's and dietary nutrition. Some cucurbits (such as watermelon, melon and ripe cassabanana) are eaten as fruit. Pumpkin vegetables are rich in vitamin C, carotene, contain B vitamins, and microelements.

    For medicinal purposes, pumpkin vegetables are used more often to improve metabolism and digestion and the activity of the gastrointestinal tract, as a diuretic and choleretic. Cucumber is actively used in cosmetology as a component of lotions and creams; it helps the skin get rid of acne and makes it velvety. Pumpkin seeds and Cyclantera edible seeds have anthelmintic effect.

    Pumpkin fruits, tops and old chayote tubers are used in livestock farming as feed. Zucchini fruits are also used to feed poultry and some livestock.

    Parts of pumpkin plants are also used for non-food purposes. Thus, hats and mats are woven from chayote and gourds, and washcloths are made from luffa. Bottle gourds are still used to make dishes, as well as smoking pipes, musical instruments, and souvenirs.

    Many plants of the pumpkin family are climbing vines that can cling to support with their tendrils. Therefore, some plants (for example, Peruvian cucumber) are used as decorative street bindweeds, to create shady gazebos and decorate balconies and walls of buildings.

    Additionally

    Order Cucurbitaceae - Cucurbitales

    Pumpkin family - Cucurbitaceae

    The family includes mainly herbaceous plants, less often shrubs. They are distributed mainly in the tropics of both hemispheres. Pumpkins with edible fruits: watermelons, cucumbers, melons, pumpkins are very widely cultivated by humans. Watermelon is the most drought-resistant of all pumpkins, and in our country the best varieties it is bred in the south: in the Volga region, southern steppe regions and in Central Asia. This is not surprising, since the closest relative of cultivated watermelons is common watermelon(Citrullus vulgaris) grows in African deserts - Kalahari, etc. Another type of watermelon lives in the dry regions of Iran, Afghanistan and Turkmenistan - coloquint(Citrullus colocynthis), the bitter fruits of which have medicinal value.

    We will study the structure of flowers and fruits in pumpkin plants using several examples.


    Rice. 113. Pumpkin family. Cucumber (Cucumis sativus): 1 - part of a flowering shoot; 2 - pistillate flower (corolla is cut); 3 — staminate flower in section. Pumpkin (Cucurbita pepo): 4 - cross section of the pumpkin ovary. Step (Bryonia): 5 - normal and 6 - double (fused from two) stamen. Coloquint (Cyrtullus colocynthis): 7 - double stamen; 8 - androecium and gynoecium of pumpkin; 9 - diagrams of pumpkin flowers (the original five-membered flowers are depicted)

    Cucumber (Cucumis sativus) (Fig. 113, 1, 2, 3). For classes, you need herbarium specimens of plants in flowers, flowers and young (taken immediately after flowering) fruits stored in alcohol.

    Pumpkin plants: fruit and ornamental

    In addition to the usual equipment, you also need a razor. Examining the herbarium specimen, we note the following:

    1) recumbent pentagonal stems, which often produce adventitious roots at the nodes and take root;

    2) simple unbranched tendrils, which is a very important generic characteristic of cucumber and melon, in contrast to watermelon and pumpkin, which have branched tendrils;

    3) the leaves are heart-shaped at the base, five-lobed, and unlike melon, the blades of cucumber leaves are sharp;

    4) stems and petioles of leaves, pedicels and ovaries of flowers are coarsely hairy;

    5) flowers are dioecious, staminate flowers are in bunches, and pistillate flowers are often solitary in the leaf axils.

    Having placed the pistillate flower on the magnifying table, we will examine it and, placing the YuHocular, we will get acquainted with the thorns covering the surface of the ovary and the cucumber fruit.

    These spines turn out to be modified hairs, at the base of which there are swollen cells that look like warts. At the top of each of them there is a point - strong, even slightly woody. This is why young cucumbers are often prickly. If we look at the hairs covering the calyx, we will be convinced that their main cells are much thinner, the hairs are multicellular and less rigid than those on the ovary.

    Let us now move on to the analysis of the perianth. The calyx and corolla are fused together. The number of sepals and corolla lobes is five, the flowers are yellow. To consider internal structure flower, open its tube with a needle and unfold it. In the center of the female flower we will see a short massive style with an equally massive three-lobed stigma at the top. It should be noted that each lobe of the stigma is bifid, in turn, which is why it gives the impression of being six-lobed. Examining the lobes of the stigma, we note what a huge receptive surface it has! All six of its massive processes are covered with a thick layer of papillae. At the base of the corolla tube we will notice a white massive corrugated ring - these are nectar scales along with the underdeveloped androecium attached to them.

    The last stage of our work with a female flower will be the analysis of its ovary. The easiest way to understand its structure is through sections of young fruits. Take such a fruit and cut it crosswise slightly above the middle. Then we trim the edge of the lower half of the fruit with a razor and make as thin a cross-section as possible. We will conduct the study in a drop of water at a 20X magnifying glass.

    At first glance at the cut, it will seem to us that the ovary is three-locular. However, having examined it carefully, we note that each nest is further divided in half by a very thin film (usually poorly visible on sections of the flower ovary). The ovary appears to be six-locular, although often these secondary septa are incomplete. On pumpkin flower diagrams they are indicated by dotted lines. Let's look at the seed bearers. Each of them protrudes into the ovary and bifurcates at its outer wall, its ends are bent to the side, and the ovules are located on them. As a result, each seed bearer resembles an umbrella in cross-section. The fruit of the cucumber is berry-shaped, the so-called pumpkin.

    After the work just completed, analyzing the male cucumber flower will no longer present much difficulty. Let's open and unroll his tube. The sepals and corolla lobes are also among five here, and the pubescence is less rigid than that of the female flower. The receptacle is saucer-shaped, with stamens located on it, often fused by anthers into a common head. When the flower unfolds, the stamens separate from each other and appear to consist of three groups: two large and one smaller. There are only five stamens, four of them are fused in pairs, and one is free.

    We will take a closer look at this free stamen. The filament is short, wide, its anthers are long; they are bent in a w-shape and laid on a wide binder. The ligament at its top produces a large bifid growth. The anthers are bilocular and open with a longitudinal slit, and at their edges, adherent to the connective tissue, a dense brush of hairs is visible. These hairs are sticky, their secretions, staining the insect, contribute to the adhesion of pollen to its body. In the center of the male flower, around the underdeveloped pistil, there are five callous thickenings, sometimes significantly fused with each other, and only three tubercles protrude on a circular swollen base - these are nectaries.

    India is the birthplace of cucumber and melon.

    Pumpkin(Cucurbita pepo). Huge pumpkin flowers are easy to study. It is better to prepare them in the form of buds (male and female). Pumpkin flowers are axillary, solitary. Examining them, we note the following:

    1) In male flowers, the stamens are also fused into groups: 2 + 2 + 1 (free). However, this is noticeable only at the base of their massive threads, where between them there are small holes - windows leading into the flower. The upper part of the stamen filaments and all their anthers have grown together into one large column, dotted on the surface with loop-shaped pollen sacs.

    Then we open the stamen tube with a needle and bend the stamens to the side. At the top of the receptacle, around the underdeveloped pistil, we will see a nectar roller, access to which is possible for insects only through the windows remaining at the base of the stamen column. The process of fusion of stamens in a pumpkin, therefore, went further than we saw in a cucumber. To make sure that three groups of stamens are fused here, let’s cut the stamen tube across, slightly above its base, and we will see that the tube consists of three bundles of stamen filaments fused to each other.

    2) The structure of the pistillate flower is the same as that of the previous species.

    It is also good to compare watermelon flowers with male pumpkin flowers, in which you can find stamens in various stages of fusion with each other: 2 + 2 + 1; 2+1 + 1 + 1; 3 + 2. In female flowers of watermelons, rudiments of stamens are also common, and in male flowers one can see an underdeveloped and even lobed stigma. Melon has bisexual flowers. We can therefore conclude that in pumpkin plants dioeciousness is a secondary phenomenon. Flower formulas: male - K(5)C(5)A(2)+(2)+1; female - K(5)C(5)G-(3).


    Rice. 114. Campanulaceae family. Spreading bell (Campanula patula): 1 - flowering shoot; 2 — longitudinal section of a flower (petals and part of the stamens have been removed); 3 - successive stages of development of stamens and pistil; 4 - mature capsule. Mountain beetle (Jasione montana): 5 - inflorescence. Ostrowskya magnifica: 6 - flower and capsule; 7 - diagram of a campanula flower

    Having studied the herbaceous forms of pumpkinseeds, we can conclude that their stems are climbing or recumbent - lashes clinging with the help of tendrils growing from the axils of the leaves (i.e. tendrils of stem origin). A characteristic feature of the family is also the dominance of dioecious flowers, and pumpkin plants can be either monoecious or dioecious. The ovary is always inferior with lateral wall (parietal) placenta. The pistil is most often formed by three fused carpels.

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