绿僵菌和白僵菌对刚竹毒蛾的毒力比较  

Comparison on Infection of Metarrhizium anisopliae and Beauveria bassiana to Pantana phyllostachysae

作　　者：宋漳[1] 卢凤美[2] 陈辉 

机构地区：[1]福建农林大学林学院,福建南平353001 [2]福建林学院学报编辑部,福建南平353001 [3]政和县林业局,福建政和353600

出　　处：《西北林学院学报》2003年第3期43-46,共4页Journal of Northwest Forestry University

基　　金：福建省教育委员会科学基金资助项目(K93036);福建省自然科学基金资助项目(C96026)

摘　　要：3株金龟子绿僵菌(M1、M2、M3)和3株球孢白僵菌(B1、B2、B3)经室内侵染试验证明,皆能侵染2～3龄刚竹毒蛾幼虫。3个金龟子绿僵菌菌株中以M3对刚竹毒蛾的毒力最强,LC50、=7.01×107个·L-1、LC50M3=7.55×106个·LT50分别为:LC50M1=3.12×107个·L-1、LC50M2=7.66～11.53d、LT50M3=5.88～10.50d。3个球孢白僵L$C1;LT50M1=6.50～11.65d、LT50M2==9.64×106个·L$C1、LC50B2菌菌株中以B1对刚竹毒蛾的毒力最强,LC50、LT50分别为LC50B1=7.18～10.39d、LT50B2=7.45～11.614.46×107个·L-1、LC50B3=1.05×108个·L-1;LT50B1=7.80～11.83d。试验表明,供试的绿僵菌和白僵菌菌株在室内对刚竹毒蛾2～3龄d、LT50B3幼虫的毒力相当。不同温度、湿度下的分生孢子萌发力试验还表明,与白僵菌相比,供试的绿僵菌菌株具有较强的耐高温和耐旱特性。3 strains of Metarrhizium anisopliae ( M1 , M2 , M3 ) and 3 strains of Beauveria bassiana ( B1 , B2 , B3 ) infected Pantana phyllostachysae in laboratory, and all showed pathogenicity to 2nd ～ 3rd instar larvae of P. phyllostachysae. Of 3 strains of M. anisopliae, M3 caused the greatest mortality. The LC50 of M1, M2 and M3 were 3.12×107 spores·L-1, 7.01×107 spores·L-1, 7.55×106 spores·L-1, and the LT50 were 6.50 ～ 11.65 days, 7.66 ～ 11.53 days, 5.88 ～ 10.50 days respectively. Among 3 strains of B. bassiana, B1 caused the greatest mortality. The LC50 of B1, B2 and B3 were 9.64×106 spores·L-1, 4.46×107 spores·L-1 , 1.05×108 spores·L-1, and the LT50 were 7.18 ～ 10.39 days, 7.45 ～ 11.61 days, 7.80 ～ 11.83 days respectively. The data indicated that there were not significant difference at the toxicity to 2nd ～ 3rd instar larvae of P. phyllostachysae between M. anisopliae and B. bassiana at 25℃. The experiment of conidial germination was carried out at different temperatures and in different humidity, and the strains of M. anisopliae showed greater resistance to high temperature and drought. The laboratory test indicated that M. anisopliae was of greater value in controlling P. phyllostachysae probably.

关 键 词：金龟子绿僵菌 球孢白僵菌 刚竹毒蛾 毒力 萌发率 

分 类 号：S763.306.7[农业科学—森林保护学]