Resistance of Southern Peas to the Cowpea Curculio1

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Fifty-one cultivars, breeding lines, and plant introductions of Vigna were evaluated for resistance to Chalcodermus Boheman. Results revealed significant differences in degree of susceptibility to this insect. Differences in adult preference were detected, and there was a positive linear relationship between the percentage of damaged pods and number of punctures per pod. A breeding line, Fla. 453-01, was consistently among the least damaged lines, but it sustained 50% pod damage under heavy population pressure. When factors of antibiosis were considered, larval development was found to be significantly impaired in certain lines, notably Ala. 963.8 and Va. 59-119.

Considering all criteria, cultivars were more susceptible than most breeding lines and plant introductions.

Document Type: Research Article

Publication date: October 1, 1968

More about this publication?
  • 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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