2558 accessions of soybean germplasm, planted in early summer, were evaluated for resistance to soybean mosaic virus (SMV) by artificial inoculation with mixed SMV. More than fifty of resistant accessions were screened out The result showed None was immune, 8 (0.3%) accessions were resistant to SMV. 47 (1.8%) modertely resistant and 434 (17.9% ) moderately susceptible. 1405 (54.0%) susceptible and 664 highly susceptible.
More than 100 accessions of resistant resources from above screening and introduction were identified further in solarium by artificial inoculation with SMV strain 1,2 and 3 respectively. 60 speific resistan and facultative resistant sourees were screened out. Shen 8655, Chadou 74-7-4 and Shandong 84037 were resistant to three strains 8 accessions were resistant to strain 1 and moderaterely sistant to strain 2 or 3.l3 aecessions were moderately resistant to the three strains, l7,6 and 9 accessions were reistant to strain l,2 and 3 respectively