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Antifeedant and larvicidal activities of Acalypha fruticosa Forssk. (Euphorbiaceae) against Plutella xylostella L. (Lepidoptera: Yponomeutidae) larvae
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نویسنده
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Lingathurai S. ,Vendan S. Ezhil ,Paulraj M. Gabriel ,Ignacimuthu S.
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منبع
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journal of king saud university - science - 2011 - دوره : 23 - شماره : 1 - صفحه:11 -16
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چکیده
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Antifeedant and larvicidal activities of hexane, chloroform and ethyl acetate extracts of acalypha fruticosa forssk. leaves were studied using leaf disc no-choice method against third instar larvae of plutella xylostella l. chloroform extract showed maximum antifeedant activity of 92.8% at 5% concentration with a lc50 value of 1.86%. nine fractions were collected from the chloroform extract (30 g) by silica gel column chromatography, among which the seventh fraction (eluted by 100% ethyl acetate) recorded maximum antifeedant activity (84.3%) at 1000 ppm concentration with a lc50 value of 385.7 ppm against the third instar larvae of p. xylostella. preliminary phytochemical analysis of this effective fraction showed the presence of terpenoids, tannins, coumarins, anthraquinones and saponins.
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کلیدواژه
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Acalypha fruticosa; Phytochemicals; Antifeedant; Larvicidal; Plutella xylostella
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آدرس
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Loyola College, Entomology Research Institute, India, Loyola College, Entomology Research Institute, India, Loyola College, Entomology Research Institute, India, Loyola College, Entomology Research Institute, India
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Authors
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