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Effect of Greenbug (Homoptera: Aphididae) Feeding on Carbohydrate Levels in Wheat

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The effect of biotype E green bug, Schizaphis graminum (Rondani), feeding on nonstructural carbohydrate profiles in susceptible 'TAM W-1D!' winter wheat seedlings was investigated. Although greenbugs caused significant reductions in plant biomass, soluble carbohydrates (expressed as percentage dry weight) were not depleted and partitioning patterns were not altered, suggesting that reduced growth rates result from decreased photosynthetic capacity caused by toxicosis induced by greenbug. Total furanose levels were significantly reduced and did not recover after aphids were removed. Moreover, stem fructans showed a lower degree of polymerization in infested plants. These results may help to explain findings from previous reports that greenbug infestations predispose winter wheat to increased injury from cold temperature.

Document Type: Research Article

Publication date: June 1, 1991

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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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