棉花黄萎病菌系不同组合对致病力的影响
Journal of Agricultural University of Hebei(2006)
Abstract
为探讨黄萎病菌系对棉花的侵染规律,以陆地棉耐病品种冀棉20和感病品种邯208为鉴别寄主,在人工培养条件下鉴定和比较了不同培养方式、不同接种方法对6个黄萎病菌系致病力的影响。结果表明:单独培养单独接种时,6个供试菌系的致病力可划分为强、中、弱3种类型,其中V2和V6致病力最强,V1和V3中等,V4和V5最弱。混合培养后接种时,除个别菌系组合在邯208上略有增强外,其余菌系组合的致病力都存在不同程度的减弱;单独培养后混合接种时,其致病力较相应单菌系接种时致病力呈现一定程度的波动,但大部分接种菌系在2个鉴别寄主上的致病力,表现出增强的趋势。
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Key words
Verticillium dahliae Kleb.,pathogenecity,cotton(Gossyium hirsutum L.)
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