A Method for Recurrent Selection of Dominant Germplasm Population in Hybrid Wheat
A cyclical selection and hybrid wheat technology, applied in the field of wheat hybridization, can solve the problem that there are few studies on the improvement of hybrid wheat germplasm population with strong dominance.
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[0024] This embodiment provides a method for recurrent selection of hybrid wheat dominant germplasm populations, such as figure 1 shown.
[0025] 1. Analysis of parental genetic differences and heterosis groups.
[0026]Select 20 parents with high combining ability and extensive sources after years of testing, including 15 maintainer lines (B) and 5 restorer lines (R) of the cytoplasmic sterile line CMS, and configure 10×10=100 diallex hybrids F 1 Combinations, of which 56 combinations are B×B combinations (crosses between maintainers, parents do not contain restorer genes), 44 combinations are R×B, B×R and R×R combinations (parents contain restorer genes), and parental SNP (Single Nucleotide Polymorphism) genetic differences and heterosis group clustering analysis, according to grouping information to provide pollination male parent for recurrent selection of two groups.
[0027] 2. Recurrent selection of half-sibs in the CMS male sterile line population (set up isolation a...
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