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Mutants of Gossypium hirsutum: Effect on Pink Bollworm in Arizona

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Abstract:

Several mutants in upland cotton, Gossypium hirsutum L., sustained less seed damage from pink bollworm (PBW), Pectinophora gossypiella (Saunders), than the check cultivars ‘Deltapine 16’, ‘Deltapine 61’, ‘Stoneville 7A’, and ‘Stoneville 213’. These mutants were as follows: glabrous, early-maturing, high-terpenoid (gossypol and related compounds), Okra-leaf and Super Okra-leaf. Earlier studies had shown that glabrous, nectariless, glabrous-nectariless, and highly pubescent mutants, and an upland cotton of complex background (AET-5), had sustained less seed damage than the check cultivars. Cottons having as much as or more seed damage than checks were Red plant, late-maturing, glandless, and frego-bract, and also strains carrying exotic cytoplasms from 6 other Gossypium spp. Practically all the cottons tested that showed resistance to PBW were earlier maturing and yielded less lint than the check cultivars. Exceptions were: ‘Westburn M’, slightly earlier, with significantly lower seed damage, and with a slightly lower lint yield the 1st season but a significantly higher yield the 2nd season; ‘DES 56’, significantly earlier, with slightly lower seed damage, and with a comparable lint yield the 1st season, and a significantly higher lint yield the 2nd season; and Stoneville 7A Okra-leaf. significantly earlier, with significantly less seed damage, and with slightly lower lint yields. No single character reduced seed damage sufficiently to be adequate for PBW control.

Document Type: Research Article

Publication date: April 1, 1979

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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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