柠檬草精油及其主要化合物对毛毛虫的杀虫活性

C. B. Vicenço, W. Silvestre, G. Pauletti
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引用次数: 0

摘要

本工作旨在评价香茅精油及其主要化合物(柠檬醛和月桂烯)对金星虫的杀虫活性。在0.1、0.3、0.5、0.7和0.9%v/v的浓度下,对精油、柠檬醛、月桂烯以及柠檬醛和月桂烯的混合物进行测试,再加上两个阴性对照(蒸馏水和Tween-80®0.5%v/v)和一个阳性对照(novaluron 0.075%w/v)。在24、48、72和96小时内评估昆虫死亡率。结果表明,柠檬曲霉精油和柠檬醛-月桂烯混合物在0.9%v/v下对金黄色葡萄球菌的控制效果良好,在最初的24小时内死亡率分别为96%和88%。在这个浓度下,柠檬醛在72小时后导致100%的死亡率,而月桂烯即使在暴露96小时后也对毛毛虫没有影响。因此,C.citratus精油可以作为一种潜在的替代品来控制金黄色葡萄球菌。
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Insecticidal activity of lemongrass essential oil and its major compounds on velvet caterpillar
The present work aimed to evaluate the insecticidal activity of Cymbopogon citratus essential oil and its major compounds (citral and myrcene) on Anticarsia gemmatalis. The essential oil, citral, myrcene, and a mixture of citral and myrcene were tested at the concentrations of 0.1, 0.3, 0.5, 0.7, and 0.9 % v/v, plus two negative controls (distilled water and Tween-80® 0.5 % v/v) and a positive control (novaluron 0.075 % w/v). Insect mortality was evaluated in 24, 48, 72, and 96 h. According to the results, C. citratus essential oil and the citral-myrcene mixture at 0.9 % v/v were effective in the control of A. gemmatalis, with 96 % and 88 % mortality, respectively, in the first 24 h. At this concentration, citral caused 100 % mortality after 72 h, whereas myrcene had no effect on the caterpillars even after 96 h of exposure. Thus, C. citratus essential oil can be a potential option for the alternative control of A. gemmatalis.
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来源期刊
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发文量
12
审稿时长
25 weeks
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