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Changes in Antifeedant Activity of Limonin Double Salt in Potato Leaves

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The uptake of limon in double salt through leaf petioles and transport in potato leaves were demonstrated by significant feeding and growth reductions in short-term and long-term feeding bioassays with fourth stadium Colorado potato beetle, LeptinotaTsa decemlineata (Say). However, limonin double salt was not an effective antifeedant when applied to leaf surfaces. It was converted to limonin (an antifeedant) within potato leaves, where it evoked feeding and growth reductions. The loss of antifeedant activity of limon in double salt revealed that the integrity of the D-ring was important for antifeedant activity of limonin. Limonin double salt or its converted product at high doses (<::50ltg/em") was phytotoxic to potato leaves.

Document Type: Research Article

Publication date: August 1, 1991

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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