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研究了香茅Cymbopogon nardus精油对桔小实蝇Bactrocera dorsalis (Hendel)的产卵驱避作用及其化学成分。结果表明,香茅精油对桔小实蝇产卵具有一定的驱避作用,不同浓度香茅精油处理芒果上的产卵量均显著低于对照,且随着香茅精油浓度的提高其产卵量逐渐减少,当浓度为10000μg/mL时,产卵驱避率为70.06%。采用气相色谱—质谱联用(GC-MS)技术分析了香茅精油的化学成份,结果发现该精油挥发物中含量较高的是3-蒈烯,香茅醛,香叶醇,香茅醇,柠檬烯。
The egg repellent effect and its chemical composition of Cymbopogon nardus essential oil on Bactrocera dorsalis (Hendel) were studied. The results showed that citronella oil had certain repellent effect on the oviposition of the orange fruit fly, the spawning amount of the different concentrations of citronella essential oil on mango was significantly lower than that of the control, and with the increase of the concentration of citronella oil, When the concentration was 10000μg / mL, the repellent rate of oviposition was 70.06%. The chemical constituents of citronella oil were analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that the contents of 3-carene, citronellal, geraniol, ,Limonene.