警惕烟粉虱传播的番茄褪绿病毒病在我国快速扩散

Be on Alert of Rapid Diffusion of Tomato chlorosis virus Transmitted by Whitefly in China

2013～2014年连续两年对我国番茄主产区烟粉虱携带番茄褪绿病毒（ToCV）的情况进行了监测。结果发现，在2013年全国采集的16个地区烟粉虱样本中，山西运城、山西太原、山东商河、陕西杨凌、北京海淀5个地区烟粉虱携带ToCV，烟粉虱样品携带 ToCV 的带毒率均低于20%；在2014年全国采集的17个地区烟粉虱样本中，北京海淀、浙江杭州、山东商河、山西运城、陕西杨凌、内蒙古等6个地区的烟粉虱携带 ToCV，且除北京外带毒率均大于50%。山西、陕西、浙江、内蒙古地区 ToCV 的发生均为首次报道，且2014年烟粉虱田间种群带毒率明显高于2013年。番茄褪绿病毒病的快速扩散趋势需引起高度重视。

In this study,we monitored the carrying rate of ToCV of Bemisia tabaci in major tomato production areas of China in 2013 and 2014.We discovered that in 2013,among all B. tabaci samples collected from 16 different areas of China,those from Yuncheng Shanxi,Taiyuan Shanxi,Shanghe Shandong,Yangling Shaanxi,Haidian Beijing carried ToCV,but the virus carrying rates were all below 20%.In 2014,among B. tabaci collected from 17 areas,those from Haidian Beijing,Hangzhou Zhejiang,Shanghe Shandong, Yuncheng Shanxi,Yangling Shaanxi,and Inner Mongolia were infected by ToCV.The virus carrying rates, except Beijing,were all above 50%.ToCV was reported for the first time in Shanxi,Shaanxi,Zhejiang and Inner Mongolia,and the rate of ToCV-infected B. tabaci increased significantly in 2014,compared with that in 2013.Thus,high attention should be paid to the trend of ToCV rapid diffusion in China.