Based on their response to 11 differential hosts such as Hefeng 25,Wenfeng 5,Youbian 30,8101,Tiefeng 25,Davis,Buffalo,Zaoshu 18,Kwanggyo,Kefeng 1 and Qihuang 22,112 SMV isolates were classified into 8 strain groups.

• 根据112个分离物在合丰25、文丰5号、诱变30、8101、铁丰25、Davis、Buffalo、早熟18、广吉、科丰1号、齐黄22共11个鉴别寄主上的症状反应,将我国北方春大豆区的SMV分成8个株系群。