Dry field high yield and high quality winter wheat new variety selective breeding technology

Abstract

The invention relates to a dry field high yield and high quality winter wheat new variety selective breeding technology which has the main selective breeding process: special germplasm resources, introduction-parent selection-winter-spring wheat sexual hybridization-excellent single plant group mass selection-stable strain identification-high generation strain production measurement-breeding strain identification-breeding strain comparative experiment-regional test-production test, etc. The technology is characterized in that in the hybridization segregative generation, the strains are planted in a mixed way according to the type combination and selected according to different types; when the isozygoty rate of the hybrid progeny is estimated to reach over 80% that is about F5-F7, the strains are began to select, and the next generation becomes a system; then, the good systems are selected to be in upgrading experiment. Therefore, in the hybridization group, various good genes are saved and recombined to be good homozygotes in the generation afterwards; ridge I cultivated by using the invention has the characteristics of remarkable yielding ability, strong drought resistance and winter hardiness, high volume weight, good nutritional quality, excellent comprehensive economical character, wide application scope, better disease resistance, etc.

Description

technical field [0001] The invention relates to a technology for breeding new varieties of crops, in particular to a technology for breeding new varieties of winter wheat with high yield and high quality in dry land Background technique [0002] The traditional breeding technology for new varieties of winter wheat mainly adopts the "pedigree method". During the breeding process, row selection and row planting involve a large workload and a long time-consuming process. Many materials are often missed or mistakenly selected, and the selection rate is low. . Especially for the special natural production conditions in central Gansu, such as low temperature and freezing damage, drought and less rain, stripe rust and other diseases, lack of varieties, etc., which lead to unstable wheat production and difficult to increase grain production, there is an urgent need for a variety of types that need to be retained. Individuals with high-yield potential have more opportunities to sele...

AI Technical Summary

Problems solved by technology

[0002] The traditional breeding technology for new varieties of winter wheat mainly adopts the "pedigree method". During the breeding process, row selection and row planting involve a large workload and a long time-consuming process. Many materials are often missed or mistakenly selected, and the selection rate is low.

Especially for the special natural production conditions in central Gansu, such as low temperature and freezing damage, drought and less rain, stripe rust and other diseases, lack of varieties, etc., which lead to unstable wheat production and difficult to increase grain production, there is an urgent need for a variety of types that need to be retained. Individuals with high-yield potential have more opportunities to select high-yield and excellent traits and save more types of plant individuals, speed up the breeding process, improve selection efficiency, and shorten the breeding period.