Resistance of Southern Peas to the Cowpea Curculio1 in the Field2

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Commercial southern pea varieties, experimental breeding lines, and plant introductions were evaluated in the field for resistance to Chalcodermus aeneus Boheman. Varieties showed significant differences in numbers of external punctures on the pod and internal infestation (slings, eggs and larvae) Oil the pea within the pod. There was no significant correlation between numbers of external punctures and internal infestation.

An antibiotic factor was associated with the hull. There were significant negative correlations between hull thickness and internal infestation. Thick-hulled varieties had fewer stings, eggs, and larvae than thin-hulled varieties. Fewer punctures penetrated the hull, and fewer stings contained eggs or larvae. These varieties also had more external punctures than thin hulled varieties. It is concluded that the female required numerous probes of these thick hulled varieties before locating a suitable oviposition site.

Document Type: Research Article

Publication date: December 1, 1972

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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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