| 多主棒孢菌在黄瓜、番茄和茄子寄主上致病力的分化 |
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| 引用本文： | 高苇,李宝聚,石延霞,谢学文.多主棒孢菌在黄瓜、番茄和茄子寄主上致病力的分化[J].园艺学报,2011,38(3):465-470. |
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| 作者姓名： | 高苇 李宝聚 石延霞 谢学文 |
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| 作者单位： | 中国农业科学院菜蔬花卉研究所,北京,100081 |
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| 基金项目： | 现代农业产业技术体系建设专项，农业部园艺作物遗传改良重点开放实验室项目 |
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| 摘 要： | 对从山东、辽宁和北京蔬菜栽培地采集的黄瓜、番茄及茄子发病组织上分离的31株多主棒孢菌，和从海南橡胶上分离的10株多主棒孢菌，采用喷雾接种的方法，测定其在盆栽黄瓜、番茄和茄子上的致病力。试验结果表明，不同寄主来源菌株的致病力间存在明显的差异，寄主来源同致病力分化之间具有显著的相关性，从而证明多主棒孢菌的种内菌株存在寄主专化性的特征。相同寄主和相同地理来源的病原菌群体中致病力也存在强、中、弱的差异，说明多主棒孢菌具有明显的致病力分化现象。
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| 关 键 词： | 多主棒孢菌 致病力 寄主专化性 |
Studies on Pathogenicity Differentiation of Corynespora cassiicola Isolates,Against Cucumber,Tomato and Eggplant |
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| GAO Wei,LI Bao-ju,SHI Yan-xia,XIE Xue-wen.Studies on Pathogenicity Differentiation of Corynespora cassiicola Isolates,Against Cucumber,Tomato and Eggplant[J].Acta Horticulturae Sinica,2011,38(3):465-470. |
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| Authors: | GAO Wei LI Bao-ju SHI Yan-xia XIE Xue-wen |
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| Institution: | Insititute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Beijing 100081，China |
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| Abstract: | Thirty-one strains of Corynespora cassiicola isolated from cucumber，tomatoe and eggplant in Shandong，Liaoning and Beijing，and 10 strains isolated from rubbers in Hainan Province were studied. The pathogenicity of the whole 41 isolates of Corynespora cassiicola to cucumber，tomato and eggplant was investigated by means of spray inoculation at seedling stage. The results showed that the pathogenicity of the isolates originated from different hosts had significant differences. There existed a strong correlation between the origins of hosts and the pathogenicity of the strains. It was proved that the intraspecific strains of Corynespora cassiicola bore a high host specialization. Furthermore，the isolates of Corynespora cassiicola collected from the same host or location showed different pathogenicity as strong，intermediate，or weak. It indicated that there was a distinct phenomenon of pathogenicity differentiation among Corynespora cassiicola strains. |
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| Keywords: | Corynespora cassiicola Corynespora cassiicola pathogenicity host specialization |
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