多种植物提取物对小菜蛾产卵的驱避作用(英文)

Effect of Crude Extracts from Plants on the Oviposition Behavior of Diamondback Moth

小菜蛾仅取食为害十字花科植物.其他非嗜食植物的提取物对小菜蛾可能有好的控制作用.在温室内试验研究了14种常见植物的提取物对小菜蛾雌虫的产卵驱避作用.绝大部分供试植物的提取物可减少小菜蛾的落卵量40%以上,作用最强的是尾叶桉的抽提物,喷施24h后卵降低率达65.52%.植物提取物对小菜蛾雌虫的产卵驱避作用48h后下降,卵减少率最高为飞机草的抽提物,达52.91%.非嗜食植物次生物质在小菜蛾的控制中会有良好的前景.

Semiochemicals extracted from other nonpreferred plants for the diamondback moth Plutella xylostlla (L.) probably had good effect in controlling that pest. The extracts from 14 species of unacceptable plants by the DBM were used in the experiment of controlling the oviposition of the diamondback moth female. Most of the extract had good effect as oviposition detterent for DBM female and the reduction percentage of eggs were more than 40%, even high to 6552% at treatment of the extract from Eucalyptus urophyla after 24 hours of spray. The activity of oviposition detterent reduced after 48 hours of spray.