What is a peanut?

Shrink peanuts are not full shriveled peanuts.

Millet, peanut, Leguminosae. Roots are rich in nodules; Stems and branches have horns, and leaves are papery opposite; Petiole stalk at the base, oval to obovate, blunt at the apex, hairy on both sides, with eyelashes at the edge; Vein edges are interconnected to form a network.

The flower is about 8 mm long; Bracts lanceolate; The corolla is yellow or golden yellow, the flag flap is unfolded, the wing flap is separated from the keel flap, it is oblong or oblique oval, the style extends beyond the pharynx of calyx tube, the pod is enlarged and thick, and the flowering and fruiting period is from June to August.

Distributed in Brazil, China, Egypt and other places. Peanuts are planted all over China, mainly in Liaoning, Shandong, Hebei, Henan, Jiangsu, Fujian, Guangdong, Guangxi, Sichuan, Jilin and other provinces (regions). Shandong province has the largest planting area and the largest output.

Extended data

Peanut varieties in China can be divided into four main types:

(1) common type. Inflorescences alternate on lateral branches, with many branches and obovate leaves. Dark green. Plants are erect, clustered and even creeping. The fruit shape is larger. Seeds long cylindrical. The growth period is longer.

⑵ Dragon-born type. Plants prostrate, alternate flowering, hairy, with anthocyanins, pods with keel (back) and hook mouth, showing a curved rod shape. The reticulation of fruit shell is deep, and the fruit needle is fragile and easy to break.

⑶ Pearl bean type. The lateral branches are close to the main stem and can bear several inflorescence nodes continuously, with only a few secondary branches. Leaf blade elliptic, light green or green. Plants erect or clustered. The fruit shape is small. The seeds are peach-shaped. Weak dormancy.

(4) Polymorphic. The lateral branches can bear inflorescences at each node, with few secondary branches, and the main stem has inflorescences. The plant is tall and has obvious anthocyanins on its stems and branches. Pods are rod-shaped, with 3-4 seed pods in the majority. The seeds are cylindrical.

There are different types of varieties cultivated on a large scale in China, most of which are clustered peanuts of pearl bean type and common type. The two types of hybrid varieties showed certain advantages in production.

Baidu Encyclopedia-Peanut (Leguminosae)