烟草丛顶病野生毒株的致病力分化  

Pathogenicity Differentiation of Wild Pathogens of Tobacco Bushy Top Disease

作　　者：祝明亮[1] 莫笑晗[1] 汪安云[1] 胡坚[1] 白江兰[1] 

机构地区：[1]云南省烟草科学研究所,云南玉溪市聂耳路47号653100

出　　处：《烟草科技》2008年第5期57-59,共3页Tobacco Science & Technology

基　　金：云南省烟草公司资助项目"烟草丛顶病预防技术研究"(04A18)

摘　　要：为了确定不同地理区域和不同烟草寄主来源烟草丛顶病病原的致病力分化,采集了12个烟草丛顶病野生毒株样品,经纯化后在温室分别用蚜虫传毒和摩擦接种方法测定了它们的致病性。2种方法接种后第28天调查结果发现来自西双版纳州勐海县的TBTV-7野生病毒株发病率分别为17%和16%,其余11个野生病毒株的发病率均在70%以上,表明不同地区烟草丛顶病野生毒株存在致病力分化的现象。To confirm the pathogenicity differentiation of pathogens of tobacco bushy top disease from different geographical regions and tobacco hosts, twelve wild pathogen samples were collected, the pathogens were purified and their pathogenicity was determined in greenhouse with aphid-vector and rubbing transmission method respectively. The disease incidence of pathogen TBTV-7 from Menghai County in Xishuangbanna were 17% and 16% respectively on the 28th day after inoculated by the two methods, and that of other pathogens were over 70%. It indicated the existence of pathogenicity differentiation.

关 键 词：烟草丛项病 烟草丛项病毒 烟草脉扭病毒 致病力 分化 

分 类 号：S432.41[农业科学—植物病理学]