萜类化合物对小菜蛾幼虫的拒食活性
Antifeedant activity of terpene compounds against larvae of the diamondback moth, Plutella xylostella
韩招久1**；王宗德2；姜志宽1；金宪杨3；钱万红1；陈 超1；陈金珠2；郑卫青1, 2
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作者单位：1 南京军区军事医学研究所 南京 210002; 2 江西农业大学 南昌 330045;3 江苏省有害生物防制工程技术研究中心 常州 213000
中文关键词：萜类化合物, 拒食率, 小菜蛾
英文关键词：terpene compounds, antifeedant rate, Plutella xylostella
中文摘要：采用叶碟浸液法测试从松节油合成的26 个不同结构萜类化合物样品对小菜蛾Plutellaxylostella ( L. ) 4 龄幼虫的拒食活性。结果显示, 编号为2, 4, 8, 13, 27, 31 的6 个化合物, 即诺卜醇、诺卜丙基醚、内型异莰烷基甲醇丙酸酯、4 - ( 1- 甲基乙烯基) - 1- 环己烯- 1- 乙醇丙酸酯、羟基香茅醛丙酸酯、羟基香茅醛1, 2- 丙二醇缩醛具有较高的拒食活性。处理有效成分为001 gmL 时, 这6 个化合物24h 拒食率为70%~ 100%。其中2, 4, 8 号3 个化合物拒食活性最高, 处理有效成分为0.01 gmL 和0.001gmL 时, 24 h 拒食率分别为98.33%, 99.80%, 100.00%和85.60%, 83.90% , 66.97%; 并且持效性较好, 72h 拒食率分别为92.67%, 89.97%, 98.73%和63.20%, 63.30%, 45.93%。
英文摘要：The antifeedant activities of twenty six terpene compounds synthesized from turpentine were tested with 4th instar larvae of diamond back moth, Plutella xylostella ( L. ) , using dipped cabbage discs. Six of these compounds, numbered 2, 4, 8, 13, 27 and 31, namely nopol, nopyl propyl ether, endo- isocamphanyl methanol propionate, 4- (1-methyl ethylene )-1-cyclohexenyl-1-ethol propionate, hydroxycitronellal propionate and hydroxycitronellal 1, 2- propanediol acetal, showed rather high antifeedant activity, and compound 2, 4 and 8 displayed the highest. Compounds 2, 4 and 8 held 98.33%, 99.80% and 100.00% antifeedant rate respectively 24 hours later, and 92.67%, 89.97% and 98.73% 72 hours later when the leaf discs were treated at the dosage of 001 gmL. While the dosage was 0.001 gmL, the antifeedant rates were 85.60%, 83.90% and 66.97% 24 hours later, and 63.20%, 63.30% and 45.93% 72 hours later respectively. The results also showed that the antifeedant activity went high with the dosage increase, down with the time going.