Method for selection and breeding of wheat hybrid offspring

Abstract

The invention belongs to the technical field of wheat breeding methods and discloses a method for selecting and breeding wheat hybrid offspring. Its main technical features are: during the filling period after the flowering stage, the quotient obtained by dividing the number of spikes per plant of each candidate generation material by the number of spikes per plant of the control variety is the number of spikes per plant or line of each candidate generation index; in the late stage of filling or after harvest, calculate the grain number index per plant or line of each generation material to be selected; after threshing and planting, calculate the grain weight index of each generation material to be selected; The ear number index per plant or line, the grain number index per plant or line and the grain weight index per plant or line are multiplied respectively to obtain the single plant or line index of each generation material to be selected. composite index. The method has the advantages of low seed selection cost, less land occupation, high efficiency, good variety purity, rich variety types, and obvious diversification characteristics.

Description

technical field [0001] The invention belongs to the technical field of selection and breeding methods for offspring of wheat, in particular to a method for selection and breeding of offspring of wheat. Background technique [0002] In the process of wheat breeding, the selection of wheat progeny mainly refers to the number of spikes per plant, the number of grains per spike and the weight of thousand kernels. In order to obtain better wheat varieties, in the early stage of wheat breeding, the number of candidate materials is large enough, compared with the comparison wheat varieties, and then the better candidate materials are selected as wheat offspring. When selecting wheat progeny, the methods currently used are mainly based on the experience of technicians, using methods such as visual inspection. Due to the personal experience and hobbies of technicians, some technicians focus on the number of spikes per plant; Some technical personnel focus on thousand-grain weight, a...

AI Technical Summary

Problems solved by technology

When selecting wheat progeny, the methods currently used are mainly based on the experience of technicians, using methods such as visual inspection. Due to the personal experience and hobbies of technicians, some technicians focus on the number of spikes per plant; Some technical personnel focus on thousand-grain weight, and different technical personnel will select and breed wheat progeny lines such as large-ear type progeny materials, multi-ear type progeny materials, multi-grain type progeny materials, and large-grain progeny materials according to personal preferences, so that , if all wheat candidate materials with excellent single performance are used as the next generation, it will increase the cost of seed selection, occupy a lot of land, and the efficiency is low, which is not conducive to the efficient screening of varieties; if the wheat offspring is selected according to the experience and preferences of technicians , some excellent varieties / lines may be eliminated

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