Among 520 tobacco samples collected in Yunnan Province,71.74%,55.01% and 6.35% samples were infected by Tobacco mosaic virus(TMV),CMV and Potato virus Y(PVY),respectively.

• 在云南采集的520个花叶病样品中；烟草花叶病毒(Tobacco mosaic virus；TMV)、CMV和马铃薯Y病毒(Potato virus Y；PVY)总检出率分别为71.；74%25、55