不同温湿度条件下绿僵菌LA菌株对东亚飞蝗的致病力  

Virulence of Metarhizium anisopliae against Locusta migratoria manilensis under Different Temperatures and Humidities

作　　者：朱彬洲[1,2] 雷仲仁[1] 徐洪富[2] 王兆勇[1] 梁兴慧[1] 

机构地区：[1]中国农业科学院植物保护研究所/植物病虫害生物学国家重点实验室,北京100193 [2]山东农业大学植物保护学院,泰安271018

出　　处：《中国生物防治》2010年第4期448-452,共5页Chinese Journal of Biological Control

基　　金：国家自然科学基金项目(30671407);国家公益性行业科技项目(200903021)

摘　　要：本文于室内研究了不同温湿度条件下,绿僵菌Metarhizium anisopliae对东亚飞蝗Locusta migratoria manilensis致病力的影响。结果表明:在30℃、3种不同相对湿度(RH30%、60%和90%)条件下,3龄、4龄和5龄蝗蝻均在RH90%时,死亡率最高,LT50最短;其次为RH60%和RH30%。在不同温度条件下,30℃时绿僵菌对5龄蝗蝻的致死率最高,LT50最短(3.366d);其次为33℃和27℃;36℃条件下,蝗蝻的死亡率最低,LT50最长(6.424d)。The virulence of Metarhizium anisopliae against Locusta migratoria manilensis at different temperatures and relative humidities was evaluated indoors. Results showed that, when three regimes of relative humidities of 90%, 60% and 30% were combined with temperature 30℃, mortalities of the 3fa, 4th or 5th instar nymphs were all the highest and LT50 value was the shortest at RH 90 % . Under different temperatures （27, 30, 33, 36℃ ）, mortality of the 5th instar nymphs was the highest and LT50 value was the shortest （3.366 d） when the locusts were exposed to 30℃, and mortality of the 5＇h instar nymphs was the lowest and LT50 value was the longest （6.424 d） when the locusts were treated at 36℃.

关 键 词：绿僵菌 东亚飞蝗 致病力 温湿度 

分 类 号：S476.12[农业科学—农业昆虫与害虫防治]