Transgenic glyphosate-resistant canola was first commercially grown in Western Australia (WA) in 2010, providing an opportunity to obtain important baseline data regarding the level of glyphosate resistance in weeds following the exclusive use of glyphosate for in-crop weed control. In this study, two surveys (2010 and 2011) were conducted across the 14Mha of the grainbelt of WA. The 2010 surve...

The rate of herbicide resistance evolution in plants depends on fitness traits endowed by alleles in both the presence and absence (resistance cost) of herbicide selection. The effect of two Lolium rigidum spontaneous homozygous target-site resistance-endowing mutations (Ile-1781-Leu, Asp-2078-Gly) on both ACCase activity and various plant growth traits have been investigated here. Relative gro...

Weed control through allelopathic plants is a promising approach that may minimize many of negative consequences synthetic herbicides. We have studied potential Chrysanthemoides monilifera subsp. (boneseed) leaf extract for controlling growth Lolium rigidum (annual ryegrass) in wheat ( Triticum aestivum ) fields. Both pre-and post-emergent ryegrass-control experiments were conducted greenhouse ...

The introduction of harvest weed seed control (HWSC) techniques and associated machinery has enabled the routine use an alternative technology at a novel timing in global grain cropping fields. Driven by significant threat widespread populations annual ryegrass (Lolium rigidum) with multiple-herbicide resistance, 1990s Australian growers researchers developed to target, harvest, production othe...

A random survey of 264 cropping fields in the Western Australian wheat belt was conducted to determine the extent of rigid ryegrass resistance to commonly used acetolactate synthaseand acetyl-CoA carboxylase-inhibiting herbicides. Rigid ryegrass infestation density was assessed and seed samples collected and subsequently tested for resistance to diclofop-methyl, clethodim, chlorsulfuron, and su...

Weed control failures due to herbicide resistance are an increasing and worldwide problem significantly impacting crop yields. Herbicide resistance due to increased herbicide metabolism in weeds is not well characterized at the genetic level. An RNA-Seq transcriptome analysis was used to identify genes conferring metabolism-based herbicide resistance (MBHR) in a population (R) of a major global...