Short-Day Cotton Stocks as Possible Sources of Host Plant Resistance to the Pink Boll worm1

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Abstract:

An improvement of a previously used technique for screening cotton stocks for pink boll worm (Pectinophora gossypiella (Saunders)) resistance was devised. The improved procedure involved the use of newly hatched pink boll worm larvae, rather than eggs, for infesting bolls of experimental stocks. Of the shortday stocks tested, Gossypium kirsutum race palmeri and G. hirsutum race marie-galante exhibited resistance to the pink bollworm. Further study indicated that the resistance of marie-galante was apparently due to the extensive proliferation of tissue in infested bolls which crushed, trapped or so injured the young larvae that death ensued. The resistance of marie-galante was categorized as antibiosis. The level of resistance occurring in Fl hybrids of marie-galanteXDeltapine 15 suggested that the genetic characters responsible for resistance exhibited partial dominance in the cross to the susceptible stock.

Document Type: Research Article

Publication date: June 1, 1961

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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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