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Larvicidal and ovicidal activity of carvacrol, p-cymene, and γ-terpinene from Origanum vulgare essential oil against the cotton bollworm, Helicoverpa armigera (Hübner).
Environmental Science and Pollution Research ( IF 5.8 ) Pub Date : 2020-03-23 , DOI: 10.1007/s11356-020-08391-2
Xue Gong 1 , Yujian Ren 1, 2
Affiliation  

This study evaluated the larvicidal activity, and ovicidal activity of Origanum vulgare EO and its major components against the cotton bollworm, Helicoverpa armigera. The chemical composition of the O. vulgare EO was analyzed by gas chromatography-mass spectroscopy. GC-MS analysis revealed that the O. vulgare EO was composed of ten compounds. The major constituents were carvacrol (78.35%), followed by p-cymene (6.85%) and γ-terpinene (3.70%). In larvicidal activity assay, the O. vulgare EO achieved a LC50 value of 265.51 μg/ml. The three major constituents from the O. vulgare EO were tested individually for toxicity against larvae of H. armigera. Carvacrol, p-cymene, and γ-terpinene appeared to be most effective against H. armigera, with LC50 values of 51.53, 121.32, and 150.15 μg/ml, respectively. Moreover, EC50 values of carvacrol, p-cymene, and γ-terpinene against H. armigera eggs were 33.48, 47.85, and 56.54 μg/ml, respectively. Overall, this study showed that O. vulgare EO and its major constituents have the potential to develop as new eco-friendly insecticides against H. armigera.

中文翻译:

牛至精油中香芹酚,对伞花烃和γ-萜品烯的杀虫和杀卵活性对棉铃虫Helicoverpa armigera(Hübner)的杀灭作用。

这项研究评估了牛至油菜EO及其主要成分对棉铃虫Helicoverpa armigera的杀幼虫活性和杀卵活性。通过气相色谱-质谱法分析了普通小麦的EO的化学组成。GC-MS分析表明,普通麦芽孢杆菌EO由十种化合物组成。主要成分为香芹酚(78.35%),其次是对-异丙苯(6.85%)和γ-松油烯(3.70%)。在杀幼虫活性测定中,普通小果油EO的LC50值为265.51μg/ ml。分别测试了来自普通农杆菌EO的三种主要成分对棉铃虫幼虫的毒性。香芹酚,对伞花烃和γ-萜品烯似乎对棉铃虫最有效,LC50值分别为51.53、121.32和150.15μg/ ml。此外,香芹酚,对异丙基苯,棉铃虫卵的抗性和γ-萜品烯分别为33.48、47.85和56.54μg/ ml。总体而言,这项研究表明,普通农杆菌EO及其主要成分有潜力发展成为对抗棉铃虫的新型环保杀虫剂。
更新日期:2020-03-24
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