某些胡椒科植物提取物对小菜蛾（鳞翅目：菜蛾科）的生物活性

Bio efficacy of some piperaceae plant extracts against Plutella xylostella L. (Lepidoptera: Plutellidae).

作者信息

Kraikrathok C, Ngamsaengi S, Bullangpoti V, Pluempanupat W, Koul O

出版信息

Commun Agric Appl Biol Sci. 2013;78(2):305-9.

Abstract

The extracts of Piper sarmentosum Roxb., Piper retrofractum Vahl, Piper interruptum Opiz and Piper nigrum plants belonging to the family Piperaceae were evaluated for their efficacy against diamondback moth, Plutello xylostella L. third instars under laboratory conditions. Comparative toxicity of various extracts prepared in hexane, dichloromethane, ethyl acetate and ethanol following sequential extraction procedure were applied topically to the larvae. The hexane extract of Piper retrofractum was most active (LD = 237 ppm). The toxicity was dose dependant and correlated to duration of exposure. The hexane extract of P. nigrum was least active with an LD50 of 18,435 ppm. The mode of action of these extracts and effect on other developmental parameters is in progress.

摘要

对胡椒科的蒌叶、假蒌、多裂胡椒和胡椒属植物的提取物在实验室条件下针对小菜蛾（Plutella xylostella L.）三龄幼虫的功效进行了评估。按照顺序提取程序用己烷、二氯甲烷、乙酸乙酯和乙醇制备的各种提取物的比较毒性被局部施用于幼虫。假蒌的己烷提取物活性最高（LD = 237 ppm）。毒性呈剂量依赖性，且与暴露持续时间相关。胡椒的己烷提取物活性最低，LD50为18,435 ppm。这些提取物的作用方式及其对其他发育参数的影响正在研究中。