湖北省棉花黄萎病病菌致病力分化研究  

The Study on the Pathogenicity Differentiation of Verticillium dahliae in Hubei Province

作　　者：金利容[1] 万鹏[1] 孔令甲[1] 喻大昭[1] 黄薇[1] 黄民松[1] 汪莉[1] 

机构地区：[1]农作物重大病虫草害防控湖北省重点实验室,湖北省农业科学院植保土肥研究所,武汉430064

出　　处：《棉花学报》2011年第6期566-572,共7页Cotton Science

基　　金：农业部公益性行业科研专项(nyhyzx07-052);国家十一五支撑计划(2006BAD08A07);国家科技基础性工作专项(SB2007FY027)

摘　　要：采用无土育苗和裸苗接种后移栽的方法,对2007-2008年间采自湖北不同地区的32个棉花黄萎病菌菌株和4个对照菌株进行了致病力鉴定。结果表明,强致病力菌株有12个,占鉴定菌株总数的33.3%,中等致病力菌株有19个,占52.8%;弱致病力菌株有5个,占13.9%。该结果表明,湖北存在强致病力的黄萎病菌,而且强致病力菌在该省的三大植棉区均有分布。对不同鉴别寄主对各菌株的反应分析显示,采用无土育苗和裸苗接种相结合的鉴定方法是一项不错的鉴定方法。A new method of soilless seedling technique and bare seedling transplanting technique was adopted to identify physiologyical forms of 32 cotton Verticillium dahliae strains from different areas of Hubei province and four control strains. The resuits suggested that physiological forms of all strains were divided into three types： that is Type Ⅰ （a severe virulence type）,Type Ⅱ （an intermediate one）, and Type Ⅲ（a mild one） with the proportion of 33.3%,52.8% and 13.9%,respectively. The severe virulence strains were found in all of three cotton regions in Hubei province. Analysis of reaction of different hosts to Verticillium dahliae displayed that there were significant differences, which implied that the method was an identification method.

关 键 词：湖北省 棉花黄萎病菌 生理型鉴定 致病力 裸苗接种法 

分 类 号：S435.621[农业科学—农业昆虫与害虫防治]