1. Green beans are a kind of spring soybeans, also known as "double green beans". Its color is blue as jade, its true seed coat and fruit are green, and its round seeds are smaller than ordinary soybeans.
2. Green beans are a kind of spring soybeans, also known as "double green beans". Its color is green as jade. The real seed coat and fruit are green, and the round seeds with green appearance are smaller than ordinary soybeans. There are many kinds, including black umbilical cord and white umbilical cord. Due to the long illumination time and large temperature difference between day and night, the climate characteristics in northern Shaanxi are obvious. The produced double green beans are good in color, full in granules, rich in high-quality protein, high in soluble protein, balanced in fat, and ideal in mineral components such as calcium and fish scales. It is rich in protein (more than 40%), vitamins and trace elements, and has a wide range of uses, both as medicine and food. It can be cooked and eaten, and can also be used to produce bean sprouts or processed into bean non-staple food.
3. Morphological characteristics
Green beans are soybeans with turquoise seed coats. According to the color of its cotyledons, it can be divided into two types: green-skinned and green-kernel soybeans and green-skinned Ren Huang soybeans. Stems stout, densely covered with long gray bristles. Petiole long, densely gray long bristles; Stipules are small and lanceolate; Tripartite compound leaves, terminal lobules rhomboid-ovate, 7-13cm long and 2-6cm wide, with an acuminate apex, a wide wedge-shaped or round base, white villous on both sides, and small lateral lobules obliquely ovate; Leaf rachis and petiole are densely covered with yellow long bristles.
Racemes axillary, bracts and bracteoles lanceolate and hairy; Calyx-shaped, calyx teeth 5, lanceolate, the longest teeth below 1, all densely white villous; Corolla small, white or lavender, slightly longer than calyx; The apex of the flag flap is slightly concave, the wing flap has 2 ears, and the keel flap is sickle-shaped; Stamens 10, dimorphic; Ovary linear and hairy. Pods are oblong, slightly curved, drooping, yellow-green, with dense green bristles and edible seeds.