温度对烟草低头黑病菌形成附着胞和侵染能力的影响研究  

Studies on Influence of Temperature on Appressorium Formation and Infection Capacity in Colletotrichum sp

作　　者：张广民[1] 王智发[1] 张修国[1] 时呈奎[1] 

机构地区：[1]山东农业大学烟草研究室

出　　处：《中国烟草》1992年第3期6-9,共4页China Tobacco

摘　　要：采用分生孢子悬浮液以载玻片悬滴法和烟株幼茎喷洒接种法,研究了温度对烟草低头黑病菌形成附着胞和侵染能力的影响。结果表明,低头黑病菌形成附着胞的适宜温度为20～30℃,最适宜温度为25～28℃;病原菌以分生孢子附着在烟株幼茎表皮毛上萌发形成附着胞,从表皮毛基部直接侵染引起发病。The influence of temperature on appressoriurn formation and infection capacity in Colletotrichum sp was studied with conidial suspension in glass slide culture and young stem of the tobacco.Appressoria were formed at temperature ranging from 20 to 30℃,at optimum 25 to 28℃,Conidia adhering to the young stem epidermai hair of the tobacco germinated and formed the appressoria which entered the host directly from the base of the epidermal hair.

关 键 词：温度 低头黑病 附着胞 烟草 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]