Corn, wheat, cucumber, watermelon, tomato, soybeans, peas, spinach, cabbage

Hermaphroditic No No No No No No No No No

Hermaphroditic No Yes Yes Yes Yes Yes Yes Yes Yes

Unisexual flowers Yes No Yes Yes Yes Yes

Bisexual flowers No No Yes Yes No No No No No

Self-pollination No No Yes Yes No No No No

Cross-pollination Yes No Yes Yes Yes Yes Yes

The roots of corn are fibrous root systems. In addition to the radicles, nodal roots also grow from the stem nodes: The nodal roots growing from underground nodal roots are called underground nodal roots, usually 4 to 7 layers; the nodal roots growing from above-ground stem nodes are also called supporting roots and aerial roots, usually 2 to 3 layers. The plant height is 1~4.5 meters, and the stem is cylindrical. The whole plant generally has 15 to 22 leaves, the leaves are wide and long, and the leaf edges are often wavy. The flowers are unisexual, monoecious. The male flowers are located at the top of the plant and are called panicles; the female flowers are located in the leaf axils in the middle of the plant and are called panicles. Male flowers generally bloom 3 to 5 days earlier than female flowers.

Wheat, self-pollinating. An important cultivated cereal of the genus Triticum in the family Poaceae. It is an annual or perennial herb; the stem has 4 to 7 nodes, and the number of effective tillers is related to the soil and fertilizer environment. The leaves are long linear; the spikes are upright, and the cob is continuous without breaking; the spikelets are solitary, containing 3 to 5 (~9) flowers, and the upper flowers are sterile; the glume is leathery, oval to oblong, with 5 ~9 veins; ridge on the back; lemma boat-shaped, without a basal plate at the base. Its shape, color, hair and awn length vary with the variety. The caryopsis is large, oblong, with hairs on the top, and a deep longitudinal groove on the ventral surface. It is not adhered to the palea and easily falls off.

The root system of cucumber is shallow and its regeneration ability is weak. The stems are vine-like, up to 3 meters long and branched. The leaves are palmate, large and thin, with finely serrated edges. Flowers are usually unisexual, monoecious. Gourd fruit, several centimeters to more than 70 centimeters long. The color of young fruits ranges from milky white to dark green. The fruit surface is smooth or has white, brown or black knobs. Some fruits have a bitter taste from cucurbitacins. The seeds are flat, oblong, with light yellow seed coat.

The main root system of watermelon is more than 1 meter deep. The root mass is mainly distributed in the tillage layer of 20cm-30cm. The roots are slender and easy to break, have weak regeneration and are not resistant to transplantation. The stems of the seedlings are upright, elongated between nodes 4 and 5, and prostrate after 5 and 6 leaves. They are highly branched and can form 3-4 levels of lateral branches. The leaves are alternate, with deep lobes, shallow lobes and entire margins. The flowers are dioecious on the same plant, with male flowers appearing on nodes 3-5 of the main stem and female flowers on nodes 5-7. A few hermaphrodite flowers may appear during the peak flowering period. Corolla yellow. The ovary is inferior, with a parietal placenta. Both male and female flowers have nectaries and are insect-pollinated flowers. The flowers open in the morning and close in the afternoon. Fruits are spherical, oval, elliptical, cylindrical, etc. The fruit surface is smooth or grooved, and the skin is green-white, green, dark green, dark green, black, with fine meshes or stripes in between. The flesh is milky white, light yellow, dark yellow, light red, bright red and other colors. The meat quality is divided into tight meat and sandy pulp. Seeds are flat, oval or oblong, smooth or cracked. The seed coat is white, light brown, brown, black or brown, solid or variegated.

Tomato, also known as tomato, is an annual herbaceous plant of the Solanaceae family. The fruit of tomato is an annual vegetable. It is native to South America and is widely cultivated in various parts of my country. It is produced in large quantities in summer and autumn.

Soybean (Glycine max) is an annual herbaceous plant of the genus Soybean in the Leguminosae family, originating in my country. According to the seed coat color and grain shape of soybeans, they are divided into five categories: yellow soybeans, green soybeans, black soybeans, other soybeans (soybeans with a single color such as brown, brown, red, etc.), and feed beans.

Pea, an annual twining herb, 90-180 cm tall, completely hairless. The leaflets are oblong to ovate, 3-5 cm long, 1-2 cm wide, and entire; the stipules are leaf-shaped, ovate, and the base is ear-shaped surrounding the petiole. The flowers are solitary or 1-3 are arranged in racemes and are axillary; the corolla is white or purple; the style is flat and has hairs on the inside. The pods are oblong, 5-10 cm long, with a hard paper lining inside; the seeds are round, 2-10, green, and turn yellow when dried. The flowering and fruiting period is from April to May.

Spinach has a well-developed taproot, a red fleshy root, and is sweet and edible. The root mass is mainly distributed in the soil surface layer of 25 to 30 cm. The leaves are clustered, and the petiole is attached to the shortened stem disk before bolting. It is rosette-shaped and dark green. The flowers are unisexual and dioecious, with a sexual ratio of about 1:1, and occasionally monoecious flowers are found. The male flowers are in the form of spikes or panicles, and the female flowers are clustered in the leaf axils. Cell fruit, each containing 1 seed, with a hard, leathery shell. According to the structure of the outer bracts of the fruit, it can be divided into two types: thorny species and thornless species. Spinach is a cold-tolerant vegetable and a long-day plant. It requires more water during the growth process.

Chinese cabbage has a shallow root system, a thick main root, well-developed lateral roots, and a horizontal distribution. The leaves are hairy or hairless and are attached to shortened stems in a rosette shape. The axillary buds are underdeveloped except for shoot-type and tillering types. Racemes, flowers light yellow to yellow. Siliques. Cultivated cabbage belongs to two subspecies of Brassica: the head-bearing cabbage is divided into loose-leaf varieties, semi-head varieties, flower-center varieties and head-head varieties according to the degree of leaf ball cohesion; non-heading cabbage is divided into ordinary cabbage, colloidal cabbage There are 5 varieties of Chinese cabbage, Chinese cabbage, Chinese cabbage and tillering cabbage.