Mechanisms of glyphosate resistance in two perennial ryegrass (<i>Lolium perenne</i>) populations

Abstract

Both target-site and non-target-site mechanisms of glyphosate resistance were found in the perennial ryegrass population with 25-fold resistance, whereas only the non-target-site mechanism of resistance was found in the population with sevenfold resistance. This is the first study of the mechanism of glyphosate resistance in perennial ryegrass.