Breeding method for obtaining blue dwarf male-sterile germplasms with different blue-grained fertile plant crossover rates

The invention belongs to the technical field of breeding methods of sterile wheat lines and relates to a breeding method for obtaining blue dwarf male-sterile germplasms with different blue-grained fertile plant crossover rates. A basic material is a variety A and a blue dwarf male-sterile variety A obtained by backcross breeding of the variety A; and a pollination male parent is blue wheat containing a blue-grained 4E/4D gene obtained by breaking linkages from a blue dwarf male-sterile backcross population. The invention provides a novel breeding method for obtaining blue dwarf male-sterile germplasms with different blue-grained fertile plant crossover rates and provides a method for increasing broken linkages, changing the linkage positions and increasing the character exchange probability through radiation treatment. The varieties of the blue dwarf male-sterile germplasms can be enriched, so as to obtain more applicable blue dwarf male-sterile germplasms from wheat hybrid productionand blue wheat variety b