广西杧果炭疽病病菌致病力差异测定  

Determination on pathogenicity differences of mango anthracnose pathogens

作　　者：覃丽萍[1] 苏琴[1] 汪茜[1] 史国英[1] 谢玲[1] 苏启臣 莫贱友[2] 

机构地区：[1]广西壮族自治区农业科学院微生物研究所,广西南宁530007 [2]广西壮族自治区农业科学院植物保护研究所,广西南宁530007

出　　处：《中国植保导刊》2016年第4期5-8,共4页China Plant Protection

基　　金：广西自然科学基金(2013GXNSFAA019064);广西农业科学院基本科研业务专项(桂农科2014YQ22;015YT39);国家现代农业产业技术体系广西民杧果创新团队(桂农业发[2011]33);国家现代农业产业技术体系广西杧果创新团队建设专项(nycytxgxcxtd-02-08-2)

摘　　要：采用组织分离法从广西不同地区不同生境分离获得19株杧果炭疽病病菌,通过离体针刺接种测定了菌株的致病力差异。结果表明,以接种病菌后7 d的病情指数进行聚类分析,将可19株菌株划分为3个致病类型:强致病型、中等致病型、弱致病型。各类型菌株所占比例大小为:弱致病型>中等致病型>强致病型。表明广西杧果炭疽病病菌不同菌株的致病力存在明显差异。其中,弱致病型菌株占优势。Nineteen CoUetotrichum spp. strains were isolated by tissue isolation method from diseased mango organs collected in different habitats of Guangxi, and pathogenicity of the strains was tested by stab inoculation in vitro. Based on data of cluster analysis on disease index 7 days after inoculation, quantity ratio of 3 pathogenicity types of 19 strains were list as follows： weak pathogenicity type〉medium pathogenicity type〉high pathogenicity type. The results showed that there was significant differences of pathogenicity among different Colletotrichum spp. strains in Guangxi, and weak virulent strains were predominate.

关 键 词：杧果 炭疽菌 致病力 差异 

分 类 号：S436.67[农业科学—农业昆虫与害虫防治]