Method for breeding of eurytopic high-yield new wheat variety in one spot between different sowing time

Abstract

The invention discloses a method for breeding of a eurytopic high-yield new wheat variety through shuttling between different sowing time. The method includes: planting a new parent between October 15 to October 20, and selecting a material characterized by moderate heading stage and good yield trait during a flowering period in the next year to conduct hybridization; sowing F1 at the beginning of November; sowing F2 on about October 20; sowing F3 on October 10, and eliminating poorly adapted types; sowing F4 at the first third of November, selecting sowing time adaptability, disease resistance, plant height and plant type, etc., and preliminarily selecting the yield trait; sowing F5 on October 10, selecting the sowing time adaptability, disease resistance, plant height, plant type and the like of F5, and preliminarily selecting the yield trait, thus obtaining some stable strains and a lot of seeds; and for the generations after F5, carrying out repetitive adaptability and yield identification between different sowing time till breeding a stable, high-yield and eurytopic new strain. The invention has the advantages of low implementation cost, high theoretical level and wide application prospect.

Description

technical field [0001] The invention belongs to the field of biological sciences, and in particular relates to a method for breeding new varieties of wheat with wide adaptability and high yield by shuttling between different sowing periods in the same place. Background technique [0002] There are mainly two traditional wheat planting methods in the Sichuan Basin and surrounding provinces and cities: the double-cropping system of rice and wheat (referred to as the double-cropping system) distributed in the plains and hills and valleys, and the three-cropping system of wheat, jade, and sweet potato (bean) distributed in the hills and slopes. system (abbreviated as three-cooked system). In the three-cropping system, wheat is generally planted in strips from the end of October to early November, and corn is broadcast or transplanted between the wheat planting belts from the end of March to early April of the following year. Sweet potatoes or soybeans are interplanted, corn is ...

AI Technical Summary

Problems solved by technology

In the double cropping system, due to the characteristics of wheat varieties, the main problem at present is that the land will be idle for about two months during the rice harvest and wheat sowing period, resulting in a serious waste of light and hot water resources, and the wheat will also be affected by the growth of wheat. The period is too short to achieve high yield

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