Effects of a primitive cotton accession on feeding ofspodoptera littoralis andhelicoverpa armigera and on oviposition ofBemisia tabaci |
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| Authors: | A Navon Venezia Melamed-Madjar M Zur |
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| Institution: | 1. Dept. of Entomology, ARO, The Volcani Center, 50250, Bet Dagan, Israel
2. Dept. of Plant Introduction, ARO, The Volcani Center, 50250, Bet Dagan, Israel
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| Abstract: | A primitive cotton(Gossypium hirsutum L.) accession, V-64, from the Caribbean Islands was bioassayed for antibiosis against pests of this crop in comparison with
the commercial strains Acala SJ-2 and Pima S-5. V-64 reduced weight gain and leaf consumption ofSpodoptera littoralis andHelicoverpa armigera, and significantly reduced oviposition ofBemisia tabaci. The leaf pigment glands in V-64 were larger and more abundant than in the commercial strains, and the feeding ofH. armigera on these glands was avoided, indicating that the glands probably constituted the major resistance character in V-64.
Contribution from the Agricultural Research Organization. No. 3187-E, 1991 series. |
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| Keywords: | Primitive and commercial cotton Spodoptera littoralis feeding Helicoverpa armigera feeding Bemisia tabaci oviposition pigment glands |
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