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Low levels of resistance were detected among more than 4,000 accessions of dry beans, Phaseolus vulgaris L., exposed to Zabrotes subfasciatus (Boheman). Although significant differences were found among the accessions for all of the parameters of resistance measured, most consistent separation among cultivars was obtained by using developmental time and weight of adult progeny. Expression of resistance was maintained when the number of bean seeds per adult was varied; however, the standard method used (seven pairs of adults infesting 50 seeds) was the best infestation level to detect varietal differences in resistance. Successive rearing for five generations on resistant or susceptible classified entries did not change resistance expression or reduce reproduction of Z. subfasciatus on resistant lines. Resistance levels were too low to be of economic value.
Document Type: Research Article
Publication date: August 1, 1982
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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.