Response of Nectariless Cotton Genotypes to Cotton Fleahopper (Heteroptera: Miridae) Infestation
Authors: Lidell, M. C.; Niles, G. A.; Walker, J. K.
Source: Journal of Economic Entomology, Volume 79, Number 5, October 1986 , pp. 1372-1376(5)
Publisher: Entomological Society of America
Abstract:Twelve experimental lines and commercial cultivars of Upland cotton, Gossypium hirsutum (L.), were evaluated under conditions of both light and heavy infestation for resistance to the cotton fleahopper, Pseudatomoscelis seriatus (Reuter). Eight genotypes were nectariless, one was glabrous, one was pilose, and two were both hirsute and nectaried. At low fleahopper densities established by artificial infestation, only the susceptible control, 'Lankart LX571', was adversely affected by presence of fleahoppers. Responses of the 12 genotypes were much more variable when fleahopper densities were high. A pilose genotype and 'Tamcot CAMD-E' displayed high levels of resistance to this insect, while the nectariless line 7Ane × 6M exhibited a moderate degree of resistance. The remaining nine nectariless and glabrous genotypes suffered large and significant losses for various yield and earliness components under conditions of heavy f1eahopper infestation. Performance of 'Tamcot CAMD-E" in the experiment indicates that a system of indirect selection can be used successfully to develop resistance to an insect pest. Results for the nectariless entries emphasize the importance of evaluating a character associated with insect resistance in a variety of genetic backgrounds and at differing infestation levels to gain a more complete understanding of its effectiveness.
Document Type: Research Article
Publication date: October 1986
- 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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