Mechanisms and Agronomic Aspects of Herbicide Resistance

Mechanisms and Agronomic Aspects of Herbicide Resistance The use of herbicides for the last 40 years has selected for increased resistance within formerly susceptible species. The incidence of resistance, fIrst reported in 1970 (99, 143), has risen dramatically over the past 10 years and has been reviewed accordingly (25, 51, 57, 81, 82, 99, 123, 142). To date at least 57 weed species, including 40 dicots and 17 monocots, have evolved resistance to triazine herbicides (Table 1). In addition, at least 60 species have biotypes resistant to one or more herbicides from 14 other herbicide classes (81, 98, and authors' unpublished data). The herbicide classes against which resistance is most common tend to have single target sites under the control of single or very few genes (16). Where the genetics of evolved weed resistance has been studied, one or very few genes are involved (78, 88, 129). Here we review herbicide resistance in weeds and crops with emphasis on recent insights into mechanisms and agronomic implications. We include brief discussions of engineered resistance in crops (reviewed in this series in 1989: 113; see also 17, 45, 127). Population biology and the evolution of weed resistance were reviewed in 1991 (183) and are dealt with only http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Plant Biology Annual Reviews

Mechanisms and Agronomic Aspects of Herbicide Resistance

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Abstract

The use of herbicides for the last 40 years has selected for increased resistance within formerly susceptible species. The incidence of resistance, fIrst reported in 1970 (99, 143), has risen dramatically over the past 10 years and has been reviewed accordingly (25, 51, 57, 81, 82, 99, 123, 142). To date at least 57 weed species, including 40 dicots and 17 monocots, have evolved resistance to triazine herbicides (Table 1). In addition, at least 60 species have biotypes resistant to one or more herbicides from 14 other herbicide classes (81, 98, and authors' unpublished data). The herbicide classes against which resistance is most common tend to have single target sites under the control of single or very few genes (16). Where the genetics of evolved weed resistance has been studied, one or very few genes are involved (78, 88, 129). Here we review herbicide resistance in weeds and crops with emphasis on recent insights into mechanisms and agronomic implications. We include brief discussions of engineered resistance in crops (reviewed in this series in 1989: 113; see also 17, 45, 127). Population biology and the evolution of weed resistance were reviewed in 1991 (183) and are dealt with only

Journal

Annual Review of Plant BiologyAnnual Reviews

Published: Jun 1, 1993

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