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Resistance of flaxleaf fleabane (Conyza bonariensis (L.) Cronquist) to glyphosate

Authors
  • Minati, Mohammed Hussein1
  • Preston, Christopher1
  • Malone, Jenna1
  • 1 The University of Adelaide, Waite Campus, Adelaide, Australia , Adelaide (Australia)
Type
Published Article
Journal
Bulletin of the National Research Centre
Publisher
Springer Berlin Heidelberg
Publication Date
May 04, 2020
Volume
44
Issue
1
Identifiers
DOI: 10.1186/s42269-020-00316-w
Source
Springer Nature
Keywords
License
Green

Abstract

BackgroundResistance to glyphosate has been reported in flaxleaf fleabane populations within a number of grain growing areas in southern Queensland and northern New South Wales and other cropping regions across Australia.ResultsTo investigate the processes contributing to the evolution and spread of glyphosate-resistant flaxleaf fleabane, the resistant populations tested in dose-response experiments varied in their responses to glyphosate from two to eight times the recommended rate. The different dose responses obtained may indicate different mechanisms of resistance. This can possibly be attributed to an independent evolution of resistance.ConclusionThe results demonstrate that glyphosate resistance is widespread across Australia and has likely evolved multiple times as well as dispersing by seeds.

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