Rhizobium japonicum mutant (B15-11) and soybean plant mutants （18-79, 33-79, 55-79, 66-80 and 77-80） were obtained by the mutation treatment with nitrosoguanidine (N-methyl-N′-nitro-
文摘Rhizobium japonicum mutant (B15-11) and soybean plant mutants （18-79, 33-79, 55-79, 66-80 and 77-80） were obtained by the mutation treatment with nitrosoguanidine (N-methyl-N′-nitro-
