Glyphosate-resistant weeds of South American cropping systems: an overview

摘要: Herbicide resistance is an evolutionary event resulting from intense herbicide selection over genetically diverse weed populations. In South America, orchard, cereal and legume cropping systems show a strong dependence on glyphosate to control weeds. The goal of this report review the current knowledge cases evolved glyphosate-resistant weeds in American agriculture. first reports include populations highly taxa (Lolium multiflorum Lam., Conyza bonariensis L., C. canadensis L.). all instances, evolution followed use fruit fields Chile Brazil. orchards Colombia, Parthenium hysterophorus L. has shown ability withstand high rates. recent appearance Sorghum halepense Euphorbia heterophylla soybean Argentina Brazil, respectively, major concern. clearly taken place those agroecosystems where exerts continuous pressure massive adoption no-till practices together with utilization crops are factors encouraging increase use. This phenomenon been more evident exclusive reliance as main tool for management results biologically prone evolution.  2007 Society Chemical Industry