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Observed Population Increase, Nymphal Weight Gain, and Oviposition Nonpreference as Indicators of Lygus hesperus Knight (Heteroptera: Miridae) Resistance in Glandless Cotton

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Field cages were used to measure population increase of Lygus hesperus Knight on 52 glandless (gl) cotton breeder lines in comparison with the standard cultivar ('Acala SJ-2') a glanded (Gl) variety. Thirty-two of the gl lines produced significantly more L. hesperus than did the glanded 'Acala SJ-2' (1.9- to 2.5-fold more), whereas 20 gl lines were not different from 'Acala SJ-2.' Thirty-seven selected gl lines were further evaluated in a greenhouse for effect of cotton genotype on nymphal L. hesperus survival and growth rate and on adult oviposition preference. The results indicate that glandless cottons could be developed that are no more susceptible to L. hesperus than the cultivar 'Acala SJ-2.'

Document Type: Research Article

Publication date: October 1, 1985

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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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