Abstract: Alkaloid is the main insecticidal composition in Tripterygium wi如rdii Hook a famous insecticidalplant. In order to study its insecticidal activites and mechanism the stomach toxicity of the total alkaloid against larvaeof My"thimua separates Walker was tested their toxicity symptoms were observed and its effects nn the activities ofAChE and the content of ACh of larval heads in different toxicity stages were assayed.

Key words: Tripteryium wilfordii Hook, Total alkaloid, llythimua separates Walker

CLC Number: 

• S482.3