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Type: Conference paper
Title: Glyphosate resistance in barnyard grass (Echinochloa colona)
Author: Thai, H.
Malone, J.
Boutsalis, P.
Preston, C.
Citation: Proceedings of the 18th Australasian Weeds Conference: Developing Solutions to Evolving Weed Problems., 2012 / Eldershaw, V. (ed./s), pp.237-240
Publisher: Weed Society of Victoria Inc.
Publisher Place: Melbourne, Victoria
Issue Date: 2012
ISBN: 978-0-646-58670-0
Conference Name: 18th Australasian Weeds Conference (8 Oct 2012 - 11 Oct 2012 : Melbourne, Victoria)
Editor: Eldershaw, V.
Statement of
Hoan Nguyen Thai, Jenna Malone, Peter Boutsalis and Christopher Presto
Abstract: Echinochloa colona is an important summer-growing weed species in northern Australian cropping regions. As a result of the intensive use of glyphosate in summer fallows, glyphosate resistant populations of E. colona have evolved, with the number of resistant populations identified rapidly growing. This study identified glyphosate resistance in E. colona collected from different locations in Australia and investigated the mechanism of glyphosate resistance. Pot trials conducted on populations ofE. colona collected from northern Australia identified resistance to glyphosate in 11 populations of this weed species. The level of resistance varied among the populations from 2- to 11-fold. Sequencing of the target-site (EPSPS) identified a mutation at position 106 leading to a change from proline to serine in the most resistant population A533.1 only. With the range of resistance levels identified, it is expected that different mechanisms of resistance will be present among the rest of the resistant populations.
Keywords: Barnyard grass
Echinochloa colona
glyphosate resistance
resistance mechanism
Rights: Copyright status unknown
Appears in Collections:Agriculture, Food and Wine publications
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