2019
DOI: 10.1590/s0100-83582019370100033
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Sourgrass Resistance Mechanism to the Herbicide Glyphosate

Abstract: The knowledge on the mechanism that gives a weed resistance to a particular herbicide is essential regarding scientific, academic, and practical aspects because it determines the recommendations for prevention and management of resistance in the field. Studies on the sourgrass (Digitaria insularis) glyphosate resistance mechanism in the literature have not been conclusive. Thus, the aim of this research was to study and evaluate the putative resistance mechanisms whichgives sourgrass biotypes, the ability to s… Show more

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Cited by 12 publications
(10 citation statements)
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“…After, differences in absorption, but not in the translocation of glyphosate and the occurrence of mutations were observed in other populations [83,84], while collected populations in different regions of the State of São Paulo presented mutations and enhanced activity of the EPSPs [85]. In the most recent study, including glyphosate resistant D. insularis populations collected in different states, it was not possible to characterize the mechanism (s) involved in the resistance [86]. These results show that resistance to a given herbicide can be governed by different mechanisms, acting in isolation or together, in the same species.…”
Section: Scientific and Technical Aspectsmentioning
confidence: 99%
“…After, differences in absorption, but not in the translocation of glyphosate and the occurrence of mutations were observed in other populations [83,84], while collected populations in different regions of the State of São Paulo presented mutations and enhanced activity of the EPSPs [85]. In the most recent study, including glyphosate resistant D. insularis populations collected in different states, it was not possible to characterize the mechanism (s) involved in the resistance [86]. These results show that resistance to a given herbicide can be governed by different mechanisms, acting in isolation or together, in the same species.…”
Section: Scientific and Technical Aspectsmentioning
confidence: 99%
“…It is applied in desiccation and post-emergence, being classified as a non-selective herbicide with systemic action. It has a wide spectrum of action, controlling annual or perennial weeds, dicots and monocots (Melo et al, 2019).…”
Section: Introductionmentioning
confidence: 99%
“…Dentre as plantas daninhas que podem ocasionar prejuízos em culturas agrícolas, está o capim-amargoso (Digitaria insularis L.) a qual é uma espécie perene, herbácea e rizomatosa, que apresenta alta competitividade, sendo de suma importância o seu controle no início da safra e da forma mais eficiente possível (CORREIA;LEITE, GARCIA, 2010;MELO et al, 2019).…”
Section: Introductionunclassified
“…Em função das aplicações constantes do herbicida glifosato, surgiram biótipos resistentes ao herbicida em diversas regiões do país, e devido a esse fator, as aplicações de herbicidas de diferentes mecanismos de ação e de mesmo espectro de controle é uma estratégia eficiente que deve ser utilizada na agricultura moderna (MELO et al, 2019).…”
Section: Introductionunclassified