转基因抗虫棉黄萎病田间消长模式研究  

Dynamic Patterns of Verticillium Wilt of Transgenic Cotton Cultivars in the Field

作　　者：赵贵元[1] 王省芬[1] 张桂寅[1] 吴立强[1] 李志坤[1] 马峙英[1] 

机构地区：[1]教育部华北作物种质资源研究与利用重点实验室/河北省作物种质资源重点实验室,河北农业大学,河北保定071001

出　　处：《棉花学报》2010年第5期509-512,共4页Cotton Science

基　　金：公益性行业(农业)科研专项经费(nyzx07-052)

摘　　要：2008年和2009年利用田间病圃研究了17个转基因抗虫棉品种的黄萎病田间消长模式。基于各品种在不同调查时间点的2年病情指数进行聚类分析,可将供试品种划分为4种类型。分析发现,同一类型中不同品种的黄萎病田间消长模式相似,而不同类型间表现出明显差异。第Ⅰ类品种表现为在调查的前、中、后期病情指数较低,且其病指低于其它3类;第Ⅱ类品种在整个调查时期病情指数也较低,但全年有2个发病高峰;第Ⅲ类品种在调查前期病指较高,中期病指略有降低,后期病指快速上升,发病高峰期病指较高,其病指在整个调查时期高于第Ⅱ类;第Ⅳ类品种调查前期病指较高,中期病指降低,后期病指最高,全年有2个明显的发病高峰,且其病指在8月20日前的几个调查时期均显著高于其它3种类型。The Verticillium wilt resistance of 17 transgenic cotton cultivars was identified in the field disease nursery in order to analyze the dynamic patterns of Verticillium wilt in 2008 and 2009.According to the disease index of different investigated times of all varieties in two years,the varieties were classified into four types based on clustering analysis.The results showed that the different varieties from the same type had very similar dynamic pattern,however,the varieties from different types pre-sented obvious difference.TypeⅠhad the lowest disease index at whole stage than that of the other types.TypeⅡ had two peaks at whole stage and showed higher disease index than that of TypeⅠ.Type Ⅲ had higher disease index at whole stage than that of TypeⅡ.Type Ⅳ presented the high disease index at early stage,low disease index at middle stage and the highest disease in-dex at late stage.Type Ⅳ had two apparent peaks and the highest disease index than those of other types before August 20.

关 键 词：转基因抗虫棉 黄萎病 消长模式 

分 类 号：S435.62[农业科学—农业昆虫与害虫防治]