Abstract Physiological and biochemical reactions of different Soybean cultivars inoculated with FLS No. 1. 7. 8. were studied by means of study on change of memberanous peroxidatic reaction,Protective enzyme System, peroxidase and malic dehydrogenase isozyme. The results showed: the membranous peroxidatic reaction of susceptible cultivars was more serious after inoculated with FLS, and the activity of protective enzyme system became lost, The MDA content of resistant cultivars had some increase, but the act...