The first record of protoporphyrinogen oxidase and four-way herbicide resistance in eastern Canada
2019; Canadian Science Publishing; Volume: 100; Issue: 3 Linguagem: Inglês
10.1139/cjps-2018-0326
ISSN1918-1833
AutoresLauren Benoit, Brittany K. Hedges, Mike G. Schryver, Nader Soltani, David C. Hooker, Darren E. Robinson, Martin Laforest, Brahim Soufiane, Patrick J. Tranel, Darci A. Giacomini, Peter H. Sikkema,
Tópico(s)Plant tissue culture and regeneration
ResumoThis is the first record of protoporphyrinogen oxidase (PPO) inhibitor resistance in eastern Canada, and the second record of a glyphosate-resistant weed in Quebec. In 2016 and 2017, waterhemp seed was collected from 25 locations across Ontario and Quebec. All populations tested positive for imazethapyr resistance. Three-way resistance to imazethapyr, atrazine, and glyphosate was confirmed in 80% of the samples. Additionally, between 2015 and 2017, waterhemp seed was collected from 74 locations in Ontario or Quebec and resistance to lactofen was confirmed in 28% of the seed lots screened.
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