植物土传病害拮抗真菌的抗药性筛选  

Resistance of UV induced mutants of antagonistic fungi to fungicides

作　　者：黎起秦[1] 彭好文[1] 蒙姣荣[1] 林纬[1] 韦绍兴[1] 陈永宁 

机构地区：[1]广西大学农学院,广西南宁530005 [2]南宁市植保植检站,广西南宁530001

出　　处：《西南农业学报》2000年第3期45-48,共4页Southwest China Journal of Agricultural Sciences

基　　金：广西教育厅资助项目!(桂教科研[1998]169号)

摘　　要：从土壤中分离得到的 4种拮抗真菌( Trichoderma koningii、 T.pseudokonin-gii、T.harzianum和Gliocladium spp.)分别用紫外光诱变,得到抗氧氯化铜、扑海因和多菌灵的变异菌株。这些变异菌株对西瓜枯萎病菌(Fusarium oxysporum f.sp.melonis)和生菜菌核病菌(Sclerotinia minor)仍有较强的拮抗性。When four antagonistic fungi (Trichoderma koningii, T. pseudokoningii, T. harzianum and Gliocladium spp. ) were irradiated with ultraviolet light for 30 min, mutants of strains were obtained. Mutants did not change the morphological characters and antagonistic activity to Fuserium axysporum f. sp. melonis and Sclerotinia minor when compared with the wild type. Resistance to iprodione and copper oxychloride was found to occur in all mutants. Some of them, such as mutants of T. Koningii, T. harzianum and Gliocladium spp, resisted to carbendazim. None of the mutants resisted to propiconazole.

关 键 词：植物拮抗真菌 抗药性 植物土传病害 生物防治 

分 类 号：S432.4[农业科学—植物病理学] S476[农业科学—农业昆虫与害虫防治]