生物安全学报Issue(1)：57-63,7.DOI:10.3969/j.issn.2095-1787.2015.01.010
喜旱莲子草提取物的杀虫活性
Insecticidal activity of extracts from the invasive alien plant, Alternanthera philoxeroides, against two kinds of pests
摘要
Abstract
Background] Alternanthera philoxeroides is a globally distributed invasive weed, causing serious economic and ecologi-cal damage in China.[Method] To investigate the toxic activity of A.philoxeroides, we prepared extracts by petroleum ether, chloro-form, ethyl acetate and n-butyl alcohl.Repellency, contact and post-digestive toxicity of the extracts was tested on the lepidopteran pests Plutella xylostella and Spodoptera litura.[Result] ( 1) Each extract of A.philoxeroides had a repellent effect on both P.xylos-tella and S.litura.The effect of contact as well as post-digestive toxicity was stronger after longer extractin time;the corrected mor-tality rates and concentrations were positively correlated.(2) The corrected mortality of A.philoxeroides extracts by petroleum ether, ethyl acetate and n-butanol at a rate of 4000 g plant material/L of extraction agent on P.xylostella reached 70%, petroleum ether, ethyl acetate layer, n-butanol and water at a rate of of 4000 g plant material/L extracting agent and n-butanol and water layer of 500 g plant material/L extracting agent on S.litura reached 80%.[Conclusion and significance] The study had the reference value for the further research on A.philoxeroides and the development of new botanical pesticides.关键词
入侵植物/喜旱莲子草/杀虫活性/植物源农药/资源化利用Key words
invasive species/Alternanthera philoxeroides/insecticidal activity/botanical pesticide/resource utilization引用本文复制引用
李丹,张震,王育鹏,秦娟,李为花,谭曼丽..喜旱莲子草提取物的杀虫活性[J].生物安全学报,2015,(1):57-63,7.基金项目
2011年度安徽高校省级自然科学研究重点项目（KJ2011A111）；2012年博士点专项科研基金（20123418120008）；安徽农业大学2014年学科骨干培育项目 （）
