Characters and F_1 Heterosis Performance of Dominant Nuclear Male-sterile Lines with a Blue Seed Marker

In order to use Ms2(Ta1) gene in hybrid wheat,8 dominant nuclear dwarf male-sterile lines with a blue seed marker were bred from 97-866.The seed color,seed set rate and F1 heterosis of 8 new male sterile lines with different genetic background were analyzed.The result suggested the inheritance ratio for blue seed male-sterile plants and white seed male-fertile plants in progeny was 22.3% and 77.6%,respectively.It was indicated that the blue grain genes,Rht10 and Ms2 were probably located on the same addition chromosome and tightly linked.There is significant difference between blue seed male-sterile plants and the recurrent parents,but there is no significant difference among years.3 combinations with economical yield over 15% than CK were selected.