Screening Selected Cowpea, Vigna unguiculata (L.) Walp., Lines for Resistance to Lygus hesperus (Heteroptera: Miridae)
Authors: Moshy, Adela J.; Leigh, Thomas F.; Foster, Ken W.; Schreiber, Fred
Source: Journal of Economic Entomology, Volume 76, Number 6, December 1983 , pp. 1370-1373(4)
Publisher: Entomological Society of America
Abstract:Eighty-six cowpea, Vigna unguiculata (L.) Walp., acquisitions were screened for indications of resistance to Lygus hesperus Knight in individual plant cages. Observed gross rate of population increase and reduced proportional development of L. Hesperus to an advanced instar or the adult stage were used as indications of resistance. Significantly fewer total bugs were recovered from 35 of the cowpea test entries than from the susceptible entries. On some entries, a majority of L. hesperus recovered from cages were in the 5th instar or adult stage, whereas significantly greater proportions of lygus bugs recovered from 15 of the entries were in the earlier instars, indicating delayed development. Twenty-two entries appear to be worthy of more intensive evaluation for level and mechanism of resistance to this insect.
Document Type: Research Article
Publication date: 1983-12-01
- 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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