灰色关联度分析法在拮抗丝核菌木霉菌株筛选中的应用  

THE APPLICATION OF THE GRAY RELATED DEGREE ANALYSIS IN SCREENING TRICHODERMA SPP

作　　者：徐文凤[1] 毛志泉[2] 孙海涛[1] 刘志[1] 于金凤[1] 

机构地区：[1]山东农业大学植物保护学院,山东泰安271018 [2]山东农业大学园艺与工程学院,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2012年第2期189-192,196,共5页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：国家苹果产业技术体系建设专项经费资助;国家自然科学基金(No.30870007);农业部行业科技项目(nyhyzx07-024);山东省自然科学基金项目(Y2007D38)

摘　　要：为了筛选出能较好拮抗丝核菌的木霉菌株和了解灰色关联度分析法在木霉菌株的抑制率、产孢量及其对温度、酸碱度和多菌灵杀菌剂的耐受程度等主要生防性状综合评价中的应用效果,采用该方法对初筛得到的10株木霉菌株的8个主要性状进行了综合分析,其中木霉菌株T21-1-4的灰色关联度ri=0.8793最大,其次是T35-2-3和T16-1-4,其灰色关联度分别为0.8388和0.8337。说明T21-1-4菌株是拮抗丝核菌的较好的木霉菌株。In order to select out Trichoderma in antagonizing Rhizoctonia spp.and learn the application effect of gray correlation analysis method in the inhibition rate,growth rate,amount of sporulation,toleration to extreme temperature,pH and toleration to Carbendazim fungicide et al.Eight traits of ten Trichoderma were comprehensively studied by the method of Grey Relational Degree Analysis.The results showed that T21-1-4 isolate ranked first and the gray related degree（ri=0.8793） was the biggest,While T35-2-3 and T16-1-4 were ranked second and the gray related degree were 0.8388,0.8337 respectively.T21-1-4 isolate was the best one in antagonizing Rhizoctonia spp.

关 键 词：木霉 丝核菌 筛选 灰色关联度分析 

分 类 号：S432.44[农业科学—植物病理学]