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Study on the Toxicity of Serratia marcesens to the Common Vegetable Insects
Author(s): 
Pages: 5-7
Year: Issue:  3
Journal: TIANJIN AGRICULTURAL SCIENCES

Keyword:  鳞翅目昆虫病原菌粘质沙雷氏菌毒力;
Abstract: 从棉田中自然死亡的棉铃虫体上分离得到一株昆虫致病菌,经鉴定为肠杆菌科沙雷氏菌属粘质沙雷氏菌(Serratia marcescens).实验证明该菌对烟青虫(Heliothis assulta)、菜青虫(Pieris rapae)、棉铃虫(Helicoverpa armigera)、小菜蛾(Plutella xylostella)等蔬菜上常见的鳞翅目害虫具有一定的毒力作用.该昆虫致病菌对目标昆虫的毒力主要表现在造成昆虫停食、行动迟缓、对刺激反应迟钝、幼虫生长期缩短、提前化蛹、不能正常羽化等方面.
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