地椒提取物杀螨活性研究

中国农学通报 ›› 2010, Vol. 26 ›› Issue (5): 236-238.

地椒提取物杀螨活性研究

张凯1,刘英2,温海波3,金化亮3,李志明3,金启安3

收稿日期:2009-10-10 修回日期:2009-11-27 出版日期:2010-03-05 发布日期:2010-03-05
基金资助:
中国热带农业科学院博士科研启动基金项目

Acaricidal activity of extracts from Thymus mongolicus against Tetranychus cinnabarinus

Received:2009-10-10 Revised:2009-11-27 Online:2010-03-05 Published:2010-03-05

摘要/Abstract

摘要：

从地椒中提取挥发油及乙醇提取物，研究并比较了地椒乙醇提取物和挥发油对棉红蜘蛛的触杀活性。结果显示地椒乙醇提取物对棉红蜘蛛显示出很强的触杀作用，其毒力回归方程为Y=4.2967+1.1792x，LD50为3.95 mg/mL；地椒挥发油对棉红蜘蛛也具有显著的触杀活性，触杀作用的毒力回归方程为Y=4.6691+1.4427，LD50为1.70 mg/mL，低于乙醇提取物LD50，显示其杀螨活性较乙醇提取物更高。此外，杀卵活性试验也显示地椒挥发油的杀卵作用要高于地椒乙醇提取物，其挥发油和乙醇提取物的杀卵LC50分别为2.241和5.714 mg/mL。

Abstract:

The essential oils and its ethanol extract were prepared from Thymus mongolicus, and their contact toxicity against Tetranychus cinnabarinus were studied. The essential oil from T. mongolicus showed a strong contact toxicity with linear regress equation of Y=4.6691+1.4427 and LD50 of 3.95 mg/mL. Essential oil was extracted with hydrodistillation , and the contact toxicity of the essential oil against T. cinnabarinus was enhanced compared to ethanol extract with a relatively lower LD50 of 1.70 mg/mL. The contact LC50 value of essential oil and ethanol extract from T. mongolicus against T. cinnabarinus egg were 2.241 and 5.714 mg/mL, respectively. Key words: Thymus mongolicus; Tetranychus cinnabarinus; acaricidal activity

张凯1,刘英2,温海波3,金化亮3,李志明3,金启安3. 地椒提取物杀螨活性研究[J]. 中国农学通报, 2010, 26(5): 236-238.