The homology of CP of the BYMV-Chinese isolates is close to the BYMV-Yunnan isolates.
BYMV中国青海蚕豆分离物与中国云南蚕豆分离物同源性最高；
Based on all the results above, suggested that the spherical virus were Broad bean wilt virus 2 (BBWV 2) and the filamentous virus were bean yellow Mosaic virus (BYMV). They were multiple infecting.
根据以上结果诊断病原为蚕豆萎焉病毒2 (BBWV 2)和菜豆黄花叶病毒(BYMV)，二者为复合侵染。
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