Abstract:One wild soybean germplasm (G.soja) and two cultivated soybean cultivars(G.max) were used to make two crosses in 1987.The inheritance of type Ⅰ andtype Ⅲ were analysed based on the data of parents,F_1, F_2,and F_3.Theresults showed that the presence and absence of the absence SOD bands b_1 and b_2