Method for cultivating dwarf male sterile wheat

Abstract

The invention discloses a method for breeding nanism wheat, comprising following steps: (1) employing Nongda 139 of sterility as female parent and dwarfing 1 wheat as male parent for cross breeding, getting F1 generation, from which sifting nanism sterile wheat; (2) test crossing the F1 generation wheat with Nongda 139 and getting hybrid, planting at least 4000-5000 strains of this seed, sifting and getting the product. The parent wheat of Nongda 139 is characterized by through masculinity abortive and high fruit generating rate of hetero-cross, and the dwarfing 1 is characterized by strong straw-reduction action and easy to identify, and the product greatly increases scientific and application value of wheat Nongda 139.

Description

technical field [0001] The invention relates to a method for cultivating dwarf wheat. Background technique [0002] Male sterility is a tool for large-scale production of hybrids in crops, especially self-pollinating crops. Taigu GMS wheat is a male sterile material discovered by Gao Zhongli, a farmer technician, in a rural wheat field in Shanxi Province in 1972. The sterility of Taigu GMS wheat is controlled by a dominant gene, and the gene symbol was originally Tal (Deng Jingyang et al., Discovery and Utilization of Wheat Dominant Male Sterile Gene, Acta Crops Sinica, 1980, (2): 85- 98), the internationally registered gene symbol is Ms2 (Liu Binghua et al., A dominant gene for male-sterility in wheat, plant Breeding, 1986, 97: 204-209). Taigu GMS wheat has complete male sterile, stable sterility, and high open-pollination seed-setting rate. It is one of the most distinctive plant male sterile materials discovered so far (Liu Binghua, 1994, Wheat GMS and Recurrent Selecti...

AI Technical Summary

Problems solved by technology

In the recurrent selection population of Taigu nuclear sterile wheat, the average height of sterile plants and fertile plants is similar, but sterile plants have more opportunities to receive pollen higher than their own plants, while lower plants have less chances of receiving pollen, resulting in The plant height of the rotation population tends to increase gradually, which is not conducive to the selection of short-stalked and high-yielding wheat varieties