European Corn Borer: Evaluation of Resistance in Husk-Silk Tissue of Inbred Lines of Corn

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Larvae of Ostrinia nubilalis (Hübner) were force-fed husk-silk tissue of 2 inbred lines of dent corn. Previous research and data reported here show that B52 is highly resistant and W182E is highly susceptible to sheath-collar feeding by 2nd-generation corn borers under field conditions. In the laboratory, however, larval survival through 36 days of development was significantly greater on husk-silk tissue of B52 than on husk-silk tissue of W182E. Larvae reared on husk-silk tissue of B52 pupated 2 days sooner and emerged as adults 2 days sooner than did larvae reared on husk-silk tissue of W182E. Pupal weights of larvae reared on husk-silk tissue of the 2 inbreds were the same. Our data suggest that, if European corn borer larvae preferred to feed on husk-silk tissue instead of on sheath-collar tissue, B52 would not be resistant to 2nd-generation European corn borers. The data give further evidence that the primary sites of resistance are in sheath-collar tissue.

Document Type: Research Article

Publication date: February 1, 1980

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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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