Genetic Study on Soybean Nucleo-cytoplasmic Male Sterile Restore Gene

Soybean M type male sterile line W931A with nucleo-cytoplasmic interaction,maintainer line W931B,three restorer lines[WR99032(R1),WR0088(R2) and WR0088(R3)]from different geographical origins,and hybrid combinations[F1(A×B),F2,BC1a(A×F1),BC1b(F1×B),F1a(A×F1) and F1b(F1×B)] were studied to compare the fertility.The inheritance of restorer gene was preliminarily analysed with the index:pollen fertility and plant morphology.The results indicated that soybean M type male sterility was gametopytic.The fertility of three different restorer lines was all controlled by one pair of major dominant genes,probable some minor modifier genes.The cytoplasm of three restorer lines was proved to be fertile.It was nonallelic genes between restorer line R1 and restorer line R2,R3 but allelic genes between restorer line R2 and restorer line R3.