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dc.contributor.authorPalma-Bautista, Candelario
dc.contributor.authorTahmasebi, Behroz Khalil
dc.contributor.authorFernández Moreno, Pablo Tomás
dc.contributor.authorRojano Delgado, Antonia M.
dc.contributor.authorAlcántara-de la Cruz, Ricardo
dc.contributor.authorPrado Amián, Rafael de
dc.date.accessioned2018-10-31T12:48:58Z
dc.date.available2018-10-31T12:48:58Z
dc.date.issued2018
dc.identifier.urihttp://hdl.handle.net/10396/17377
dc.description.abstractConyza canadensis is a species invading large areas throughout the world, mainly due to its ability to evolve herbicide resistance. In Hungary, extensive areas have been infested by this species due to the difficulty in controlling it with glyphosate. To determine whether poor control was a result of misapplication or glyphosate resistance, eight suspected glyphosate-resistant C. canadensis populations from different Hungarian regions were studied. In whole-plant dose-response assays with glyphosate, the LD50 and GR50 values (survival and fresh weight reduction at 50% relative to the untreated control, respectively) indicated that resistance was confirmed in five of the eight populations (H-5 population being the most resistant). Additionally, the shikimic acid accumulation tests corroborated the results observed in the dose–response assays. 11 alternative herbicides from six different modes of action (MOA) were applied at field doses as control alternatives on populations H-5 and H-6 (both in the same regions). The H-5 population showed an unexpected resistance to flazasulfuron (ALS-inhibitor). The ALS enzyme activity studies indicated that the I50 for H-5 with flazasulfuron was 63.3 times higher compared to its correspondent susceptible population (H-6). Therefore, the H-5 population exhibited multiple-resistance to flazasulfuron and glyphosate, being the first case reported in Europe for these two MOA.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/4.0/es_ES
dc.sourceAgronomy 8, 157 (2018)es_ES
dc.subjectALS-inhibitorses_ES
dc.subjectHorseweedes_ES
dc.subjectMultiple-resistancees_ES
dc.subjectAlternative chemical controles_ES
dc.titleFirst Case of Conyza canadensis from Hungary with Multiple Resistance to Glyphosate and Flazasulfurones_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.3390/agronomy8080157es_ES
dc.relation.projectIDGobierno de España. AGL2016-78944-Res_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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