甘蓝蚜优良球孢白僵菌BD061-3菌株的筛选  

Selecting BD061-3 Strain of Beauveria bassiana to Brevicoryne brassicae L.

作　　者：刘帅[1] 李瑞军[1] 陆秀君[1] 李静[1] 董建臻[1] 谢咸升[1,2] 

机构地区：[1]河北农业大学植物保护学院,河北保定071001 [2]山西省农业科学院小麦研究所,山西临汾041000

出　　处：《安徽农业科学》2009年第16期7523-7524,7616,共3页Journal of Anhui Agricultural Sciences

基　　金：河北省省科技厅项目(07220105D-8)

摘　　要：[目的]为利用杀虫微生物防治蔬菜害虫提供一些基础性资料。[方法]对11种白僵菌菌株的产孢量、萌发率、抗紫外线能力以及对甘蓝蚜虫致死率等方面进行了试验,并进行了优良菌株在不同温度、不同浓度下对甘蓝蚜虫的生物测定。[结果]11种不同菌株的产孢量、萌发率、抗紫外线能力存在着明显的差异。其中,BD061-3菌株产孢量大,萌发率高,表现出较好的抗紫外线能力。该菌株在不同温度、不同浓度下对甘蓝蚜虫的生物测定表明,在温度为25℃左右、浓度为1×108孢子/ml时具有较强的致病性,平均校正死亡率高达93.87%。[结论]球孢白僵菌BD061-3对甘蓝蚜虫有较强的致病性。[ Objective ] The aim was to provide basal material for the biological control of Brevicoryne brassicae L. by using virulent strain. [ Method ] The spore-bearing yield, germination rate, anti-ultraviolet capacity and lethality rate of Brevicoryne brassicae L. of 11 Beauveria bassiana strains were tested and determined under different temperature and concentrations. [ Result] The differences between the spore-bearing yield and conidial germination rate of different strains were evident. Those of BD061-3 strains have big spore-bearing yield, high germination rate and anti-uhraviolet capacity were very good. The mean corrected mortality was 93.87% at the temperature was 25℃ and the concentration was 10^8 spores/ml. [ Conclusion ] Beauveria bassiana BD061-3 was strongly virulent against Brevicoryne brassicae L.

关 键 词：球孢白僵菌 蚜虫 产孢量 萌发率 

分 类 号：S476[农业科学—农业昆虫与害虫防治]