落叶松-杨栅锈菌致病性分化研究  

Pathogenic Specialization in Melampsora larici-populina

作　　者：任本权[1] 曹支敏[1] 潘彦平[1] 余仲东[1] 

机构地区：[1]西北农林科技大学林学院,陕西杨陵712100

出　　处：《西北林学院学报》2003年第2期51-54,共4页Journal of Northwest Forestry University

基　　金：国家自然科学基金资助项目(39970616)

摘　　要：对采自山西、吉林、黑龙江、内蒙古、四川、甘肃、青海、北京等省(市)的11个落叶松-杨栅锈菌(Melampsoralarici populina)分离物进行了鉴别寄主反应型测定以及潜育期、产孢量的观察,结果表明,落叶松-杨栅锈菌存在较明显的生理分化,并将其分为3个致病类群。类群Ⅰ包括青海、吉林、黑龙江、甘肃以及陕西宁陕、周至的6个分离物;类群Ⅱ包括四川、内蒙古和陕西宝鸡、太白的4个分离物;类群Ⅲ为北京的1个分离物。Eleven collection of Melampsora laricipopulina originating from Shaanxi, Jilin, Heilongjiang, Neimenggu, Sichuan, Gansu, Qinghai and Beijing were compared from the aspects of host reaction type, infectious latency and sporulation on six poplar clones. Qualitative and quantitative reaction type suggests the significant existence of the pathogenic specialization in Melampsora laricipopulina. The tested eleven collections of the group were divided into three pathotype. Six collections from Qinghai, Jilin, Heilongjiang, Gansu and Ningshan, Zhouzhi in Shaanxi were classified in the first group. Four collections from Sichuan, Neimenggu and Baoji, Taibai in Shaanxi were classified in the second group. One collection from Beijing was classified in the third group.

关 键 词：落叶松—杨栅锈菌 致病性 分化 青杨叶锈病 潜育期 产孢量 鉴别寄主 

分 类 号：S763.721.1[农业科学—森林保护学]