A mutant with high level resistance to sheath blight was crossed with Shuhui 881 and the separate population was constituted.Its F2 was analyzed by chi-square(χ2) test and ratio of resistance to susceptivity accorded with 3:1(χ2c=0.563,χ21,0.05=3.84).Therefore,the resistance was controlled by a major dominant gene,which was named Rsb-2(t).Polymorphic primers of mutant with high level resistance to sheath blight and Shuhui 881 were screened by using 530 pairs SSR primers synthesized,which were utilized for P...