Thrips1 Resistance in Plant Introductions and in Selections Made for Peanut Improvement in Oklahoma2

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Abstract:

A study of thrips resistance in peanuts begun by the Oklahoma Agricultural Experiment Station in ]966 was extended in 1968 and 1969 to 18 additional field and laboratory experiments. The 350 test entries included 24'3 Plant Introductions, 9 varieties, and] 36 selections. and inc1nded 225 entries not previously tested for thrips resistance by this station.

Peak populations in 1968 occurred on prebloom plants as was true in ]966 and 1967. Eight of the Plants introduction had damage levels in the field ranging from 81 to 93% of damage sustained by 'Starr,' the check variety. A 'Valencia' type peanut, PI 280688, was one of the more promising entries and demonstrated antibiosis and nonpreference as its mechanisms of resistance. A few selections from commercial varieties, made by Oklahoma peanut breeders to test agronomic performance, had moderately less damage than their parents.

Document Type: Research Article

Publication date: February 1, 1973

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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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