树木溃疡病菌Botryosphaeria dothidea不同菌株致病力分化与产毒强弱的关系  

Relationship between pathogenicity differentiation and toxin-producing capability of different strains of Botryosphaeria dothidea

作　　者：魏淑花[1] 张星耀[2,3] 叶建仁[4] 梁军[2,3] 

机构地区：[1]宁夏回族自治区农林科学院植物保护研究所,宁夏银川750002 [2]国家林业局森林生态环境与保护重点实验室,北京100091 [3]中国林业科学研究院森林生态环境与保护研究所,北京100091 [4]南京林业大学江苏省害生物预防与控制重点实验室,江苏南京210037

出　　处：《浙江林学院学报》2009年第5期613-619,共7页Journal of Zhejiang Forestry College

基　　金："十一五"国家科技支撑计划项目(2006BAD08A11);国家自然科学基金资助项目(30671682);国家林业局重点资助项目(2005-10)

摘　　要：为了研究溃疡病菌致病力分化与其产毒强弱间的关系,以来源于不同地区、不同寄主上的13个葡萄座腔菌Botryosphaeria dothidea菌株及其毒素原液(培养滤液)对北京杨Populus×beijingensis的30cm长枝条的致病程度及毒害程度为评价指标,对供试13个溃疡病菌菌株致病力分化、产毒强弱以及致病力分化与产毒强弱间的关系进行了研究。结果表明:供试13个溃疡病菌菌株致病力分化和其产毒强弱差异均极显著,达到0.01显著水平。聚类分析将13个菌株分成强、中、弱等3种不同的致病类群和强、中、弱等3种不同的产毒类群。不同溃疡病菌菌株产毒强弱与其致病力强弱有明显的正相关性,相关系数为0.854。To study the relationship between pathogenic differentiation and toxin-producing capability,thir-teen strains and their culture filtrates of Botryosphaeria dothidea （Moug. ex Fr.） Ces. ＆ de Not. from differ-ent regions and hosts were inoculated to the 30 cm long cutting of Populus × beijingensis,and we analyzed the pathogenic differentiations and toxin-producing capabilities,as well as their correlation using the degree of pathogenicity and toxicity on 30 cm long cutting of Populus × beijingensis as the appraisal index. Results showed that there were very significant differences （P〈0.01） in pathogenicity and their toxin-producing capability among these isolates. According to the disease and toxicity index, the 13 isolates were correspondently divided into 3 groups of strong, medium, and weak pathogenicity and toxicity by cluster analysis. There was obvious positive correlation （r = 0.854, P〈0.001 ） between pathogenicity and toxin-producing capability.

关 键 词：森林保护学 北京杨 杨树溃疡病菌 致病力分化 毒素原液 产毒强弱 相关性 

分 类 号：S763.1[农业科学—森林保护学]