Water-saving and high-quality winter wheat selection and breeding method

Abstract

The invention belongs to the technical field of wheat breeding methods, and discloses a water-saving and high-quality winter wheat selection and breeding method. The method is characterized in that ahigh-quality wheat with glutenin 5+10 subunits and secaline deletion molecular markers and a water-saving wheat parent are selected; the selected parents are planted in a region where winter wheat issuitable for being planted, and the two parents are hybridized to obtain the generation F0; the generation F0 is backcrossed with the high-quality wheat again, and the backcrossed generation F0 is obtained; germination of the backcrossed generation F0 is accelerated; after germination acceleration, the backcrossed generation F0 is planted in the region where the winter wheat is suitable for beingplanted at the north latitude of 40.5-42 degrees; high-quality marked wheat varieties are selected from the generations F1, F2 and F3, then the water-saving performance of the generations F4-7 is identified under different water conditions, the wheat varieties with good water-saving performance are selected, and finally the water-saving and high-quality varieties are obtained. Breeding of three generations is completed within two years, the breeding time is shortened, the selected varieties are good in water saving performance and high in quality, and the wheat varieties are good in stability.

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 winter wheat. Background technique [0002] In the process of winter wheat breeding, varieties with required properties are obtained by crossing parents. Due to the characteristics of vernalization and tillering of winter wheat, the current breeding has the following defects: first, one generation per year is generally used in breeding, and the breeding cycle is long, which is not conducive to the promotion of new wheat varieties; When selecting the parents, the high-quality wheat varieties and water-saving wheat were used to cross the F0 generation, and then the F1 generation to the high-generation breeding was directly carried out. The high-quality stability of the wheat was poor; thirdly, the high-quality and water-saving performance were compared in each generation of breeding. ...

AI Technical Summary

Problems solved by technology

Due to the characteristics of vernalization and tillering of winter wheat, the current breeding has the following defects: first, one generation per year is generally used in breeding, and the breeding cycle is long, which is not conducive to the promotion of new wheat varieties; When selecting the parents, the high-quality wheat varieties and water-saving wheat were used to cross the F0 generation, and then the F1 generation to the high-generation breeding was directly carried out. The high-quality stability of the wheat was poor; thirdly, the high-quality and water-saving performance were compared in each generation of breeding. , resulting in cumbersome test steps and a large test workload