Park Ii-Kwon, Choi Kwang-Sik, Kim Do-Hyung, Choi In-Ho, Kim Lee-Sun, Bak Won-Chull, Choi Joon-Weon, Shin Sang-Chul
Division of Forest Diseases and Insect Pests, Wood Chemistry and Microbiology, Korea Forest Research Institute, Seoul 130-012, Republic of Korea.
Pest Manag Sci. 2006 Aug;62(8):723-8. doi: 10.1002/ps.1228.
Plant essential oils from 40 plant species were tested for their insecticidal activities against larvae of Lycoriella ingénue (Dufour) using a fumigation bioassay. Good insecticidal activity against larvae of L. ingenua was achieved with essential oils of Chenopodium ambrosioides L., Eucalyptus globulus Labill, Eucalyptus smithii RT Baker, horseradish, anise and garlic at 10 and 5 microL L(-1) air. Horseradish, anise and garlic oils showed the most potent insecticidal activities among the plant essential oils. At 1.25 microL L(-1), horseradish, anise and garlic oils caused 100, 93.3 and 13.3% mortality, but at 0.625 microL L(-1) air this decreased to 3.3, 0 and 0% respectively. Analysis by gas chromatography-mass spectrometry led to the identification of one major compound from horseradish, and three each from anise and garlic oils. These seven compounds and m-anisaldehyde and o-anisaldehyde, two positional isomers of p-anisaldehyde, were tested individually for their insecticidal activities against larvae of L. ingenua. Allyl isothiocyanate was the most toxic, followed by trans-anethole, diallyl disulfide and p-anisaldehyde with LC(50) values of 0.15, 0.20, 0.87 and 1.47 microL L(-1) respectively.
采用熏蒸生物测定法，对40种植物的植物精油进行了测试，以检测其对嗜菌异蚤蝇（Dufour）幼虫的杀虫活性。土荆芥、蓝桉、史密斯桉、辣根、茴芹和大蒜的精油在10和5微升/升空气中对嗜菌异蚤蝇幼虫具有良好的杀虫活性。在植物精油中，辣根、茴芹和大蒜油表现出最强的杀虫活性。在1.25微升/升时，辣根、茴芹和大蒜油导致的死亡率分别为100%、93.3%和13.3%，但在0.625微升/升空气中，死亡率分别降至3.3%、0%和0%。通过气相色谱-质谱分析，鉴定出辣根中的一种主要化合物，茴芹油和大蒜油中的各三种主要化合物。对这七种化合物以及对甲氧基苯甲醛的两种位置异构体间甲氧基苯甲醛和邻甲氧基苯甲醛，分别测试了它们对嗜菌异蚤蝇幼虫的杀虫活性。异硫氰酸烯丙酯毒性最大，其次是反式茴香脑、二烯丙基二硫醚和对甲氧基苯甲醛，其半数致死浓度（LC50）值分别为0.15、0.20、0.87和1.47微升/升。
