Soybean male sterile line W931A with CMS was selected from cultivars, and then the system of three lines was set up.29 male sterile materials, 45 restorer lines and 27 hybrid combinations with high-yield and fine agronomic characteristics had been obtained through the backcrosses and test-crosses technique. Two hybrid combinations with CMS were sent in Anhui Provincial Soybean Regional Trial and significantly increased yield,more than that of check.Besides the technology of hybrid seed production had also g...