Australian Herbicide Resistance Initiative (AHRI)
2012 Articles
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Evolved Resistance to Glyphosate in Junglerice (Echinochloa colona) from the Tropical Ord River Region in Australia The objective of this study was to determine whether a jungle rice population from the tropical Ord River region of northwest Australia was glyphosate-resistant and whether alternative herbicides labelled for jungle rice control were still effective. Seed samples collected from the field site were initially screened with glyphosate in the glasshouse, and surviving individuals were self-pollinated for subsequent glyphosate dose-response studies. Glyphosate resistance was confirmed, as the suspected resistant population was found to be 8.6-fold more resistant to glyphosate than a susceptible population-based on survival (LD50 of 3.72 kg ha21), and 5.6-fold more resistant based on biomass reduction (GR50 of 1.16…  Download PDF
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Herbicide resistance-endowing ACCase gene mutations in hexaploid wild oat (Avena fatua): Insights into resistance evolution in a hexaploid species” Heredity 2012 Q Yu, M Hamdani, H Han, M Christoffers & S Powles, Heredity, online Download PDF
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Harrington Seed Destructor: A new nonchemical weed control tool for global grain crops M Walsh, R Harrington & S Powles, Crop Science, 52: 1343-1347 Download PDF
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Synergistic effects of atrazine and mesotrione on susceptible and resistant wild radish (Raphanus raphanistrum) populations and the potential for overcoming resistance to triazine herbicides M Walsh, K Stratford, K Stone & S Powles, Weed Technology, 26:341–347 Download PDF
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Non target site mechanism of metribuzin tolerance in induced tolerant mutants of narrow-leafed lupin G Pan, P Si, Q Yu, J Tu & S Powles, Crop and Pasture Science, 63: 452–458 Download PDF
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Non-target site based resistance to ALS-inhibiting herbicides in six Bromus rigidus M Owen, D Goggin & S Powles, Pest Management Science Download PDF
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Identification of resistance to either paraquat or ALS-inhibiting herbicides in two Western Australian Hordeum leporinum biotypes M Owen, D Goggin & S Powles, Pest Management Science, online Download PDF
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Reducing the risks of herbicide resistance: Best management practices and recommendations J Norsworthy, S Ward, D Shaw, R Llewellyn, R Nichols, T Webster, K Bradley, G Frisvold, S Powles, N Burgos, W Witt & M Barrett, Weed Science, Special Issue: 31-62 Download PDF
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Simulation modelling identifies polygenic basis of herbicide resistance in a weed population and predicts rapid evolution of herbicide resistance at low herbicide rates S Manalil, M Renton, A Diggle, R Busi & S Powles, Crop Protection, 40: 114-120 Download PDF
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An Herbicide-Susceptible Rigid Ryegrass (Lolium rigidum) Population Made more susceptible S Manalil, R Busi, M Renton & S Powles, Weed Science, 60:101–105 Download PDF
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A novel amino acid substitution Ala-122-Tyr in ALS confers high-level and broad resistance H Han, Q Yu, E Purba, M Li, M Walsh & S Powles, Pest Management Science, online Download PDF
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Selection for low dormancy in annual ryegrass (Lolium rigidum) seeds results in high constitutive expression of a glucose-responsive a-amylase isoform D Goggin & S Powles, Annals of Botany, 110: 1641-1650 Download PDF
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Evolved Resistance to Glyphosate in Junglerice (Echinochloa colona) from the Tropical Ord River Region in Australia T Gaines, A Cripps & S Powles, Weed Technology, 26:480-484 Download PDF
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Understanding the potential for resistance evolution to the new herbicide pyroxasulfone: field selection at high doses versus recurrent selection at low doses R Busi, T Gaines, M Walsh & S Powles, Weed Research, 52: 489-499 Download PDF
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Evolved polygenic herbicide resistance in Lolium rigidum by low-dose herbicide selection within standing genetic variation R Busi, P Neve & S Powles, Evolutionary applications, ISSN 1745-4571 Download PDF
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Linking field and farmer surveys to determine the most important changes to weed incidence. C Borger, P Michael, R Mandel, A Hasham, D Bowran & M Renton, Weed Research, 52: 564-574 Download PDF
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ACCase-Inhibiting Herbicide-Resistant Avena spp. Populations from the Western Australian Grain Belt. M Ahmad-Hamdani, M Owen, Q Yu & S Powles, Weed Technology, 26: 130-136 Download PDF
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