Mechanism of Resistance in Sorghum Variety AF-28 to Contarinia sorghicola (Diptera: Cecidomyiidae)

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Counts of sorghum midge, Contarinia sorghicola (Coquillett), adults visiting florets of the resistant sorghum, Sorghum biocolor (L.) Moench. (variety AF-28), and the susceptible variety Sart were not significantly different. More eggs (17-fold) were laid in 'Sart' florets than in florets of AF-28. When eggs were artificially inserted into the florets of both varieties, there were no significant differences in numbers of adult midges that emerged, or in days for development from egg to adults between the two varieties. Thus, AF-28 showed resistance due to nonpreference for oviposition by the female sorghum midge.

Document Type: Research Article

Publication date: December 1, 1984

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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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