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 new breed selection technology of crops, in particular to a new breed selection technology of dry land high-yield and high-quality winter wheat Background technique [0002] The traditional selection and breeding technology of new winter wheat varieties mainly adopts the "pedigree method". In the selection process, the selection of plants and rows, planting by rows, requires a lot of work, takes a long time, and often misses and misselects many materials, and the selection rate is low. . Especially in response to the special natural production conditions in central Gansu, such as low temperature and freezing damage, drought and rain, stripe rust and other diseases, lack of varieties, etc., the actual problem of wheat yield is unstable and grain yield is difficult to increase. There is an urgent need for a more diversified type. And individuals with high yield potential, there are more opportunities to select high-yield, excellent...

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.