Maize Ear Damage by Insects in Relation to Genotype and Aflatoxin Contamination in Preharvest Maize Grain

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Aflatoxin contamination in preharvest maize, Zea mays L., grain is a serious problem in the United States, especially in the southeastern production areas. Development of genotypes with resistance to ear-infesting insects, resistance to Aspergillus spp., and resistance to production of aflatoxin are maize-breeding objectives. Two cultivars, M020W x Teosinte and 'lbadan B', have been identified as having resistance to earinfesting insects when compared with the widely grown check hybrid B73 x Mo17. Although it was not determined if there was resistance to growth of Aspergillus jlavus (Link ex Fries) or aflatoxin production per se, it was confirmed that these two cultivars produced less aflatoxin in preharvest grain than B73 x Mo17. Also, Mo20W x Teosinte tended to have less aflatoxin than 'lbadan B'.

Document Type: Research Article

Publication date: December 1, 1992

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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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