| Abstract: | The F1 of N8855×N2899, a cross between two G. max cultivars, was found to be male-sterile. After it was back-crossed with the recurrent parent N2899 for four successive generations, a cytoplasmic-nuclear male sterile line and its maintainer line, designated as NJCMS1A and NJCMS1B, respectively, were obtained. NJCMS1A performed stable in male sterility and normal in female fertility with 98. 29% plants are male-sterile and 0 pollen germination. The abnormal phenomenon of 2～3 styles surrounded by 20～30 stamens was found in some flowers of male sterile plants of BC1F1 and BC2F1. |
