Resistance in Maize to Chilo partellus (Lepidoptera: Pyralidae) in Relation to Crop Phenology, Larval Rearing Medium, and Larval Development Stages

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Resistance in maize, Zea maysL., to the stemborer Chilo partellus (Swinhoe) varied according to the phenological stage of crop, larval rearing medium, and developmental stage of the larvae. At the vegetative stage of the crop, leaf feeding damage, percentage of plants showing dead heart, and percentage of stem length tunnelled by C. partellus was significantly lower on 'Mp704' than on the susceptible inbred A. However, at anthesis, the infestation and damage by C. partellus on the two maize genotypes was equally high. Data indicated that 'Mp704'-reared larvae caused significantly more damage on 'Mp704' than did artificial diet-reared larvae, and the former larvae had higher metabolic efficiencies than the latter. The high level of resistance in 'Mp704' at the vegetative stage against neonates of C. partellus was not found against older instars.

Document Type: Research Article

Publication date: June 1, 1993

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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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