Insect Resistance and Glyceollin Concentration in Seedling Soybeans Support Resistance Ratings of Fully Developed Plants
Authors: LIU, SHAOHUA; NORRIS, DALE M.; XU, MIAN
Source: Journal of Economic Entomology, Volume 86, Number 2, April 1993 , pp. 401-406(6)
Publisher: Entomological Society of America
Abstract:Hypocotyls of PI 227687 and 'Davis' soybean, Glycine max (L.) Merrill, were used in a dual-choice feeding preference assay with fifth-instar soybean loopers, Pseudoplusia includens (Walker). (Lepidoptera: Noctuidae). Constitutive resistance in hypocotyls of PI 227687 relative to 'Davis' soybean was consistent with the relative resistance previously found in fully developed plants. The chemical p-chloromercuriphenyl sulfonic acid elicited inducible insect resistance in both PI 227687 and 'Davis' hypocotyls. However, the induced insect resistance was greater in PI 227687 than in 'Davis' hypocotyls. Both constitutive and inducible resistances were associated positively with the glyceollin concentration in the assayed hypocotyls but not with the concentration of another isoflavonoid, coumestrol.
Document Type: Research Article
Publication date: 1993-04-01
- 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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