2010•Current Research Journal of Biological SciencesRequires access

Antifeedant and Growth Inhibitory Activities of Syzygium lineare Wall (Myrtaceae) Against Spodoptera litura Fab (Lepidoptera: Noctuidae)

A Jeyasankar, Naveed Iqbal Raja, Savarimuthu Ignacimuthu S.J.

Abstract

Antifeedant and growth inhibitory activities of hexane, diethyl ether, dicholoromethane and ethyl acetate crude extracts of Syzygium lineare leaves were tested against fourth instar larvae of Spodoptera litura. All the crude extracts showed antifeedant activity in a dose dependent manner. Significant antifeedant activity was found only in ethyl acetate extract. Bioctive ethyl acetate extract was subjected to fractionation using silica gel column chromatography. Seven fractions were obtained. Highest antifeedant activity (91.58%) and larval deformity were observed in sixth fraction. Third fraction showed high pupal, adult deformities and decreased adult emergence (30.2%). This plant has the potential to serve as an alternate biopesticide in the management of Lepidopteron pests.

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Key concepts: Spodoptera litura, Noctuidae, Syzygium, Lepidoptera genitalia, Ethyl acetate, Permethrin, Column chromatography, Biology