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中国农学通报

中国农学通报 ›› 2007, Vol. 23 ›› Issue (8): 403-403.

• 植物保护 农药 • 上一篇    下一篇

狼毒根三种萃取物生物活性的测定

杨春江,李 宁,刚存武,谭大风   

  • 出版日期:2007-08-05 发布日期:2007-08-05

Botanical Pesticides-Study on Biological Activity of Three Extraction from the Boot of Stellera chamaejasme

Yang Chunjiang, Li Ning, Gang Cunwu, Tan Dafeng   

  • Online:2007-08-05 Published:2007-08-05

摘要： 通过实验室测定，狼毒根在氯仿、石油醚和乙酸乙酯三种萃取物中，氯仿的萃取物对麦二叉蚜的触杀活性最高，为77.95%，其50mg/ml的浓度触杀活性最高，校正死亡率为95.00%。氯仿萃取物对甘蓝蚜的拒食活性最好，校正拒食率达到了87.85%。在氯仿萃取物的四个浓度中，（50mg/ml）的拒食活性最高，达到了91.84%，25mg/ml和16.67mg/ml的拒食率分别为87.04%和87.71%，12.5mg/ml的拒食活性仍然达到了84.82%。

关键词: 粮食安全, 粮食安全, 保障机制, 预警系统

Abstract: The bioactivity of Three extracts from Stellera chamaejasme (chloroform, petroleum ether and ethyl acetate) are studied, The result showed that: the contact toxicity of Chloroform against Schizaphis graminum were 77.95%, the calibrated mortality at a concentration of 50mg/ml is 95.00%. The antifeedant of chloroform extract against Brevicoryne brassicae L. was strongest among the extracts, the calibrated antifeedant rate is 87.85%. The antifeedant rate of four concentration(50mg/ml, 25mg/ml, 16.67mg/ml and 12.5mg/ml) of chloroform extract is 91.84%, 87.04%, 87.71% and 84.82%, respectively.

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