Multiple Herbicide Resistance in California Italian Ryegrass (Lolium Perenne Ssp. Multiflorum): Characterization of ALS-Inhibiti
Weed Science Multiple herbicide resistance in California Italian Lolium perenne multiflorum www.cambridge.org/wsc ryegrass ( ssp. ): characterization of ALS-inhibiting herbicide resistance Research Article 1 2 3 4 Cite this article: Tehranchian P, Nandula VK, Parsa Tehranchian , Vijay K. Nandula , Maor Matzrafi and Marie Jasieniuk Matzrafi M, Jasieniuk M (2019) Multiple herbicide resistance in California Italian ryegrass (Lolium 1Former Postdoctoral Research Fellow, Department of Plant Sciences, University of California–Davis, Davis, CA, perenne ssp. multiflorum): characterization of USA; 2Research Plant Physiologist, Crop Production Systems Research Unit, U.S. Department of Agriculture, ALS-inhibiting herbicide resistance. Weed Sci. 67: Agricultural Research Service, Stoneville, MS, USA; 3Postdoctoral Research Associate, Department of Plant – 273 280. doi: 10.1017/wsc.2019.1 Sciences, University of California–Davis, Davis, CA, USA and 4Professor, Department of Plant Sciences, University of California–Davis, Davis, CA, USA Received: 10 September 2018 Revised: 21 December 2018 Accepted: 3 January 2019 Abstract Associate Editor: Multiple resistance to glyphosate, sethoxydim, and paraquat was previously confirmed in two Prashant Jha, Montana State University Italian ryegrass [Lolium perenne L. ssp. multiflorum (Lam.) Husnot] populations, MR1 and MR2, in northern California. Preliminary greenhouse studies revealed that both populations Keywords: were also resistant to imazamox and mesosulfuron, both of which are acetolactate synthase Cross-resistance;
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