Directional improvement method of four-grain red peanut

Abstract

The invention provides a directional improvement method of the four-grain red peanut. The directional improvement method comprises the following steps: with a four-grain red peanut variety as a femaleparent and a trait or a gene required to be introduced as a male parent, performing single crossing; propagating F1-generation seeds, directionally selecting multi-grain F3-generation seeds, and withan F3 generation as a male parent, hybridizing with the four-grain red variety as a female parent through pollen mixing to produce an F*1 generation; with the directionally selected F3-generation seeds or plants as a male parent, propagating F3-generation seeds to produce F4-generation seeds, and selecting seeds or plants that contain the target trait; with the F*1 generation as a male parent andthe directionally selected F4-generation seeds as a female parent, mixing F*1 pollen, performing sexual hybridization with the female parent to obtain FL1-generation seeds; with F*1-generation seedsas a male parent, propagating to produce F*2-generation seeds; propagating F*2-generation seeds and the FL1-generation seeds to obtain a group containing 3 / 4 four-grain red blood relationship and a group containing 5 / 8 four-grain red blood relationship, propagating for adding generations, and selecting to form the variety. By the directional improvement method, different four-grain red blood relationship groups can be formed and the group background is divergent, so that breaking of the chain is facilitated and high-yield and high-quality four-grain red varieties are formed.

Description

technical field [0001] The invention belongs to the technical field of peanut breeding, and in particular relates to a method for directional improvement of four-safflower peanuts. Background technique [0002] Peanut is one of the most important oil crops in my country. Because of its high yield, high quality and high-efficiency economic benefits, it has become the oil crop and economic crop with the highest per unit yield, total output and export earnings in my country. It is an important source of high-quality edible vegetable oil and high-quality edible vegetable protein in China. It plays an important role in my country's food safety and oil safety. Multi-grain peanuts are an important type of peanut cultivars in my country, mainly distributed in major peanut producing areas such as Jilin, Heilongjiang, Xinjiang, Inner Mongolia, and Liaoning. Four-grained red peanuts are multi-seed peanuts with few branches and erect clusters. The pods are beaded, and the mouth and wais...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of serious loss of multiple grains, husk characteristics and taste characteristics in the existing four-safflower interspecific hybridization improvement method, the present invention provides a directional improvement method for four-safflower peanuts, which utilizes the existing four-safflower peanut Peanut is the female parent. By introducing target traits or genes, through years of reincarnation-like selection methods, on the premise of ensuring the multi-grain, shell characteristics, and taste characteristics of the four-red peanuts, the yield, stress resistance, etc. quality

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