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4. Herbicide resistance across the Australi an continent

Author

Busi, Roberto, primary, Beckie, Hugh J, additional, Bates, Andy, additional, Boyes, Tim, additional, Davey, Chris, additional, Haskins, Barry, additional, Mock, Simon, additional, Newman, Peter, additional, Porri, Aimone, additional, and Onofri, Andrea, additional

Published
2021
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12. Front Cover: Cover Image, Volume 74, Issue 10

Author

Busi, Roberto, primary, Goggin, Danica E, additional, Heap, Ian M, additional, Horak, Michael J, additional, Jugulam, Mithila, additional, Masters, Robert A, additional, Napier, Richard M, additional, Riar, Dilpreet S, additional, Satchivi, Norbert M, additional, Torra, Joel, additional, Westra, Phillip, additional, and Wright, Terry R, additional

Published
2018
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13. The power and potential of genomics in weed biology and management

Author

Ravet, Karl, primary, Patterson, Eric L, additional, Krähmer, Hansjörg, additional, Hamouzová, Kateřina, additional, Fan, Longjiang, additional, Jasieniuk, Marie, additional, Lawton‐Rauh, Amy, additional, Malone, Jenna M, additional, McElroy, J Scott, additional, Merotto, Aldo, additional, Westra, Philip, additional, Preston, Christopher, additional, Vila‐Aiub, Martin M, additional, Busi, Roberto, additional, Tranel, Patrick J, additional, Reinhardt, Carl, additional, Saski, Christopher, additional, Beffa, Roland, additional, Neve, Paul, additional, and Gaines, Todd A, additional

Published
2018
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14. Weed resistance to synthetic auxin herbicides

Author

Busi, Roberto, primary, Goggin, Danica E, additional, Heap, Ian M, additional, Horak, Michael J, additional, Jugulam, Mithila, additional, Masters, Robert A, additional, Napier, Richard M, additional, Riar, Dilpreet S, additional, Satchivi, Norbert M, additional, Torra, Joel, additional, Westra, Phillip, additional, and Wright, Terry R, additional

Published
2018
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15. Glyphosate resistance in Echinochloa colona: phenotypic characterisation and quantification of selection intensity

Author

Sheng Goh, Sou, Vila Aiub, Martin Miguel, Busi, Roberto, and Powles, Stephen B.

Subjects
Ciencias Biológicas, Selection intensity, Fecundity, Echinochloa colona, Fitness, Ecología, CIENCIAS NATURALES Y EXACTAS, Glyphosate resistance
Abstract

BACKGROUND: A population of Echinochloa colona infesting agricultural fields in the northern region of Western Australia evolved glyphosate resistance after 10 years of glyphosate selection. This study identified two phenotypic (susceptible S versus resistant R) lines from within a segregating glyphosate-resistant population. Estimation of survival, growth and reproductive rates of the phenotypes in response to glyphosate selection helped to characterise the level of resistance, fitness and the selection intensity for glyphosate in this species. RESULTS: Estimations of LD50 (lethal dose) and GR50 (growth rate) showed an eightfold glyphosate resistance in this population. The resistant index based on the estimation of seed number (SYn50) showed a 13-fold resistance. As a result of linear combination of plant survival and fecundity rates, plant fitness values of 0.2 and 0.8 were estimated for the S and R phenotypes when exposed to the low dose of 270 g glyphosate ha−1. At the recommended dose of 540 g glyphosate ha−1, fitness significantly decreased (fivefold) in S plants but remained markedly similar (0.7) in plants of the R phenotype. Thus, the calculated selection intensity (SI) at 540 g glyphosate ha−1 was much greater (SI = 17) than at 270 g glyphosate ha−1 (SI = 4). CONCLUSIONS: The assessment of plant survival and fecundity in response to glyphosate selection in the S and R phenotypes allowed a greater accuracy in the estimation of population fitness of both phenotypes and thus of glyphosate selection intensity in E. colona. The estimation of seed number or mass of phenotypes under herbicide selection is a true ecological measure of resistance with implications for herbicide resistance evolution. Fil: Sheng Goh, Sou. University of Western Australia; Australia Fil: Vila Aiub, Martin Miguel. University of Western Australia; Australia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Busi, Roberto. University of Western Australia; Australia Fil: Powles, Stephen B.. University of Western Australia; Australia

Published
2016

25. Herbicide‐resistant weeds: from research and knowledge to future needs

Author

Busi, Roberto, primary, Vila‐Aiub, Martin M., additional, Beckie, Hugh J., additional, Gaines, Todd A., additional, Goggin, Danica E., additional, Kaundun, Shiv S., additional, Lacoste, Myrtille, additional, Neve, Paul, additional, Nissen, Scott J., additional, Norsworthy, Jason K., additional, Renton, Michael, additional, Shaner, Dale L., additional, Tranel, Patrick J., additional, Wright, Terry, additional, Yu, Qin, additional, and Powles, Stephen B., additional

Published
2013
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