Multi-resistance eurytopic selection mixed wheat breeding method

Abstract

The invention relates to a multi-resistance eurytopic selection mixed wheat breeding method, and belongs to the field of crop breeding. According to the method, plants are selected from a wheat hybridF2 generation, the selected plants are subjected to seed testing, then single ears are threshed and mixed, and an F3 generation is sown; the F3 generation continues to be subjected to plant selection, the selected plants are subjected to seed testing, then single ears are threshed and mixed, and an F4 generation is sown; the F4 generation is subjected to plant selection, seed testing and single-plant threshing, mixing is not carried out, and a plant strain starts to be identified; if the plant strain integrates many objective traits and trait expressions between the plants are consistent, a key strain can be determined, a plot identification test is improved, and 3-5 plants are reserved for purity preservation; if the traits of the plant strain are separated, single plants are selected inthe plant strain, and plant strain identification is carried out in the next year until a stable generation is obtained; finally, multi-point product comparison and identification are carried out onthe stable generation. According to the method, excellent genes can be well retained during seed selection of hybrid generations, excellent single plants are selected at the early stage, adverse individuals are eliminated, the breeding efficiency is improved, and the breeding time is shortened.

Description

technical field [0001] The invention belongs to the field of crop breeding, and specifically relates to a multi-resistance and wide-suitability selection mixed wheat breeding method. Background technique [0002] Compared with foreign developed countries, my country's wheat breeding started relatively late, and it was relatively backward from resource collection to breeding experience. In the 1920s, the older generation of wheat breeders in my country began to introduce seeds from abroad, solicit resources, and began my country's modern wheat breeding. In 1921 -In 1925, my country imported more than 300 wheat varieties from abroad, and selected the popular variety Jasper wheat from them; in 1932, my country purchased 1,700 wheat varieties from the United Kingdom, and successfully selected Nanda 2419, short-grained, Varieties such as Zhongnong 28 were popularized in the Yangtze River Basin; in 1946, Beijing Agricultural College introduced 2,000 copies from the United States, an...

AI Technical Summary

Problems solved by technology

The disadvantage is that only the F4 generation is selected, and the effective selection is not carried out in the early stage, and the excellent strains cannot be found in time

The disadvantage is that the workload is heavy and the breeding efficiency is low

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