The genetic model of a rapeseed recessive genic male sterility line 9012AB was reevulated by traditional genetic analyses.Genetic analysis results showed that the male sterility of 9012A is controlled by two individual loci,i.e.Ms₃and Rf.There are two alleles at the Ms₃locus,the dominant wild type allele Ms₃ is the fertile allele,while its recessive allele ms₃ the sterile one.Three alleles are found at the Rf locus,individually Rf^a> (mutation restoration allele),Rf^b> (mutation sterile allele) and Rf^c> (wild type fertile allele),with the dominance relationship of Rf^a>>Rf^b>>Rf^c>.According to this new model,the genotype of 9012A,9012B and its temporary maintainer line T45 is Ms₃ms₃Rf^bRf^b，ms₃ms₃Rf^bRf^b， and ms₃ms₃Rf^cRf^c,respectively.Similarly,the genotype of restoration line is Ms₃ Ms₃ _ _或_ _Rf^aRf^a.