Insecticidal activity of essential oils to the tobacco cutworm, Spodoptera litura

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• 作者：Isman ; Murray B. ; Wan ; Andrew J. ; Passreiter ; Claus M.
• 关键词：Essential oils ; Insecticidal activity ; Spodoptera litura
• 刊名：Fitoterapia
• 出版年：2001
• 出版时间：January, 2001
• 年：2001
• 卷：72
• 期：1
• 页码：65-68
• 全文大小：62.2 K

文摘

Twenty-one essential oils were tested for insecticidal activity via topical administration to third instar larvae of the tobacco cutworm, Spodoptera litura. Oils of Satureia hortensis, Thymus serpyllum and Origanum creticum produced >90 % larval mortality at 24 h at a dose of 100 μg per larva. The LD₅₀ value for S. hortensis (48.4 μg) was comparable to that for Thymus vulgaris (46.9 μg). The monoterpenoid phenols thymol and carvacrol, major constituents of the oils of Thymus and Satureia species, likely account for the insecticidal action of the species.