玫烟色虫草和球孢白僵菌对朱砂叶螨和二斑叶螨的致病力评价  

Pathogenicity of entomopathogenic fungi Cordyceps fumosorosea and Beauveria bassiana against mites Tetranychus cinnabarinus and Tetranychus urticae

作　　者：田晶 孟豪[2] 杨忠钦[2] 马瑞燕 Tian Jing;Meng Hao;Yang Zhongqin;Ma Ruiyan(Department of Life Sciences,Lyuliang University,Lishi 033001,Shanxi Province,China;College of Plant Protection,Shanxi Agricultural University,Taigu 030801,Shanxi Province,China)

机构地区：[1]吕梁学院生命科学系,山西离石033001 [2]山西农业大学植物保护学院,太谷030801

出　　处：《植物保护学报》2023年第4期1072-1081,共10页Journal of Plant Protection

基　　金：国家现代农业产业技术体系(CARS-28);晋中国家农高区植物保护教授、博士工作站科研项目(JZNGQBSGZZ001);山西省高等学校科技创新计划项目(2021L566)。

摘　　要：为探寻具有杀螨潜力的生防真菌,采用喷雾法测定分析玫烟色虫草Cordyceps fumosorosea IF-1106菌株和球孢白僵菌Beauveria bassiana BB-1339菌株对朱砂叶螨Tetranychus cinnabarinus和二斑叶螨Tetranychus urticae卵、幼螨及雌成螨的致病力。结果表明,感染玫烟色虫草IF-1106菌株和球孢白僵菌BB-1339菌株后螨类的形态特征不一致,感染IF-1106菌株后形成棉絮状菌丝,而感染BB-1339菌株后则形成羊毛状菌丝。IF-1106菌株和BB-1339菌株对朱砂叶螨和二斑叶螨卵的LC50分别为2.38×10^(7)、8.26×10^(7) CFU/mL和4.48×10^(7)、1.21×10^(8) CFU/mL,对朱砂叶螨和二斑叶螨幼螨的LC50分别1.97×10^(7)、8.26×10^(7) CFU/mL和7.65×10^(6)、8.99×10^(5) CFU/mL,对朱砂叶螨和二斑叶螨雌成螨的LC50分别为9.68×10^(7)、8.02×10^(7) CFU/mL和6.36×10^(7)、2.95×10^(7) CFU/mL。表明玫烟色虫草适合防治螨卵,而球孢白僵菌防治幼螨和成螨效果更好,且对幼螨的致病力更强。In order to determine the biological control potential of Cordyceps fumosorosea and Beauveria bassiana,the pathogenicities of entomopathogenic fungus strains,IF-1106 and BB-1339 against eggs,young mites and female mites of Tetranychus cinnabarinus and T.urticae were investigated by using spray method in the laboratory.The results showed that the morphological characteristics of the mites were different between mites after infection by the IF-1106 and BB-1339.The cotton-like hyphae were formed after infection by IF-1106,while the wool-like hyphae were formed after infection by BB-1339.The lethal median concentrations(LC50)of IF-1106 against T.cinnabarinus and T.urticae eggs were 2.38×10^(7) CFU/mL and 8.26×10^(7) CFU/mL,respectively,while the LC50 values of BB-1339 against the eggs of the two mite species were 4.48×10^(7) CFU/mL and 1.21×10^(8) CFU/mL,respectively.The LC50 values against young mites were 1.97×10^(7),8.26×10^(7) CFU/mL and 7.65×10^(6),8.99×10^(5) CFU/mL,respectively,while the LC50 values against female adults were 9.68×10^(7),8.02×10^(7) CFU/mL and 6.36×10^(7) and 2.95×10^(7) CFU/mL,respectively.The results indicated that C.fumosorosea was suitable for controlling mite eggs,while B.bassiana was more effective in controlling nymphs and adult mites,and also more pathogenic against young mites.

关 键 词：玫烟色虫草 球孢白僵菌 朱砂叶螨 二斑叶螨 致病力 生物防治 

分 类 号：S476[农业科学—农业昆虫与害虫防治]