Life tables and host preference tests were used to assess the resistance of six cultivars of field peas, Pisum sativum L., to pea aphid, Acyrthosiphon pisum (Harris), in the laboratory. Antibiosisresistance in 'Tipu' and 'Century' was expressed as decreased aphid fecundity and longevity. Although differences in the reproductive rate were considerable, because prereproductive periods were similar among cultivars, there were only slight differences in the aphids' intrinsic rate of increase (r m) among cultivars. At 10 d after infestation, 'Tipu' exhibited the most and 'Triumph' the least antixenotic resistance. At 20 d, 'Triumph' was still the preferred cultivar. 'Trapper', on which aphids had the greatest rm value, appeared to have some tolerance to aphid feeding.
Document Type: Research Article
Publication date: December 1, 1991
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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.