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Mexican Bean Beetle (Coleoptera: Coccinellidae) Development on Resistant and Susceptible Soybean Lines in the Laboratory and Relationship to Field Selection

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Laboratory investigations were conducted to study development and mortality of Mexican bean beetle, Epilachna varivestis Mulsant, larvae reared on resistant plant introduction lines, released field-screened resistant breeding lines, and susceptible soybean cultivars. Mortality was low and development normal on susceptible cultivars, indicating an absence of any antibiotic mechanisms. Conversely, high mortality and slower developmental rates of larvae on the various resistant lines indicated presence of antibiotic mechanisms. Antibiosis was apparent as three relative levels: low resistance (L76-0328, L76-0049), medium resistance (L76-0272, L76-0038, L78-608), and high resistance (L76-0132, PI 227687, PI 171451, PI 229358). Results also suggest that a larval screening technique conducted specifically for an antibiotic reaction could be as effective as using existing field-screening techniques to develop resistant soybeans with high levels of antibiosis.

Document Type: Research Article

Publication date: October 1, 1986

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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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