耐高温瓜枝孢非亲和菌株筛选及其诱导黄瓜抗黑星病的研究  

Screening of Incompatible Isolate of Cladosporium cucumernium with Heat-resistance and Its Inducing Disease-resistance in Cucumber

作　　者：李宝聚[1] 刘学敏[2] 彭霞薇[1] 石延霞[1] 彭仁[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081 [2]东北农业大学农学院,哈尔滨150030

出　　处：《园艺学报》2008年第3期363-370,共8页Acta Horticulturae Sinica

基　　金：国家‘十一五’科技支撑项目(2006BAD17B07;2006BAD07B02);国家自然科学基金项目(30370983);科技部科研院所社会公益研究专项项目(2004DIB4J153);农业部蔬菜遗传与生理重点开放实验室项目

摘　　要：高温处理瓜枝孢菌(Cladosporium cucumernium)分生孢子获得了耐热、低致病力的非亲和菌株,试验证明菌株的非亲和性长期保持稳定。耐高温瓜枝孢非亲和菌株可显著激发黄瓜(Cucumis sativus L.)对黑星病的抗性,其诱导抗病的能力稳定遗传,但诱导抗病性表达有一迟滞期。诱导接种浓度越高,诱导抗病效果越显著,挑战接种浓度高,诱导的抗病效果差。The incompatible isolates of Cladosporium with heat-resisting and low pathoge nisity was obtained by high temperature treatments. It was showed that the low pathogenicity of C. cucumernium is stability. The heat-resistance isolates of C. cucumernium could induce cucumber scab resistance, and the induced resistance ability could inheritance, however there was a lag stage in the induced resistance expression. The induced resistance effect increased with the increase of induced inoculum concentration, and challenge inoculum concentration increased, induced effect reduced.

关 键 词：黄瓜 黄瓜黑星病 瓜枝孢菌 抗热性 热处理 致病力 诱导抗病性 

分 类 号：S642.2[农业科学—蔬菜学]