GrainGenes Reference Report: JEE-93-1315
Reference
JEE-93-1315
Title
Efficacy of pyramiding greenbug (Homoptera : Aphididae) resistance genes in wheat
Journal
Journal of Economic Entomology
Year
2000
Volume
93
Pages
1315-1318
Author
Porter DR Burd JD Shufran KA Webster JA
Abstract
Summary: Durable resistance to greenbug, Schizaphis graminum (Rondani), in wheat is a goal of wheat improvement teams, and one that has been complicated by the regular occurrence of damaging biotypes. Simulation modeling studies suggest that pyramiding resistance genes, i.e., combining more than one resistance gene in a single cultivar or hybrid, may provide more durable resistance than sequential releases of single genes. We examined this theory by pyramiding resistance genes in wheat and testing a series of greenbug biotypes. Resistance genes Gb2, Gb3, and Gb6, and pyramided genes Gb2/Gb3, Gb2/Gb6, and Gb3/Gb6 were tested for effectiveness against biotypes E, F, G, H, and I. By comparing reactions of plants with pyramided genes to those with single resistance genes, we found that pyramiding provided no additional protection over that conferred by the single resistance genes. Based on the results of this test, we concluded that the sequential release of single resistance genes, combined with careful monitoring of greenbug population biotypes, is the most effective gene deployment strategy for greenbug resistance in wheat
External Databases
Pubmed: 0000
Keyword
aphididae
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: JEE-93-1315
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||