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Genetic Aspects of Herbicide-Resistant Weed Management

Published online by Cambridge University Press:  12 June 2017

Michael J. Christoffers
Michael J. Christoffers*
Affiliation:
Department of Plant Sciences, North Dakota State University, Fargo, ND 58105-5051. E-mail: christof@prairie.nodak.edu
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Abstract

Weed populations develop herbicide resistance when they evolve due to selection pressure. Mutations and gene flow contribute to genetic variability and provide resistant alleles. The speed of resistance gene frequency increase is determined by the inheritance of resistance alleles relative to wild-type susceptibility and is influenced by the interaction between gene expression and selection. The goal of herbicide resistance management is to minimize selection pressure while maintaining adequate weed control. However, the specific nature of each herbicide, weed, and resistance combination determines the practices that optimize undesirable selection pressure. Therefore, generalized management strategies should be recommended with caution and must not be mandated without thorough evaluation on a case-by-case basis.

Keywords

EvolutionselectionDNA, deoxyribonucleic acid
Type
Symposium
Information
Weed Technology , Volume 13 , Issue 3 , September 1999 , pp. 647 - 652
Copyright
Copyright © 1999 by the Weed Science Society of America 

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