Glyphosate-resistant Lolium multiflorum in Chilean orchards

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dc.contributor.authorPerez, A
dc.contributor.authorKogan, M
dc.date.accessioned2024-01-10T12:39:16Z
dc.date.available2024-01-10T12:39:16Z
dc.date.issued2003
dc.description.abstractLolium multiflorum (Italian ryegrass) seeds suspected of being resistant to glyphosate were collected from fruit orchards at two locations, San Bernardo (SB) and Olivar (OL), Chile, that had been treated an average of three times per year with the isopropylamine salt of glyphosate during the previous 8-10 years. Laboratory experiments were conducted for each orchard population and a susceptible population, a commercial cultivar called Tama (TM), using Petri dishes containing filter paper saturated with 5 mL of glyphosate solution (0-160 mg a.e. L-1 ). Pot dose-response experiments were also conducted in the greenhouse. The three L. multiflorum populations were treated with glyphosate (0.00-4.32 kg a.e. ha(-1) ). The dose needed to reduce shoot length (Petri dish experiment) and fresh weight (pot dose-response experiment) by 50% was determined for each population. Compared with the TM population, the Petri dish experiment found that the SB and OL populations were five- and sixfold, respectively, more resistant to glyphosate, whereas the pot dose-response experiment found that the SB and OL populations were two- and fourfold, respectively, more resistant to glyphosate. These results confirm a new case of glyphosate resistance in a novel species, L. multiflorum , and correspond to the first case of glyphosate resistance reported from South America.
dc.fechaingreso.objetodigital2024-05-02
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1046/j.1365-3180.2003.00311.x
dc.identifier.issn0043-1737
dc.identifier.urihttps://doi.org/10.1046/j.1365-3180.2003.00311.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77168
dc.identifier.wosidWOS:000180740000002
dc.information.autorucAgronomía e Ing. Forestal;Kogan M;S/I;98569
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final19
dc.pagina.inicio12
dc.publisherBLACKWELL PUBLISHING LTD
dc.revistaWEED RESEARCH
dc.rightsacceso restringido
dc.subjectItalian ryegrass
dc.subjectherbicide resistance
dc.subjectAVENA-FATUA POPULATIONS
dc.subjectHERBICIDE DOSE-RESPONSE
dc.subjectCROSS-RESISTANCE
dc.subjectSEED-BIOASSAY
dc.subjectRIGIDUM
dc.subjectMANAGEMENT
dc.subjectRYEGRASS
dc.subjectWEEDS
dc.subject.ods13 Climate Action
dc.subject.ods02 Zero Hunger
dc.subject.odspa13 Acción por el clima
dc.subject.odspa02 Hambre cero
dc.titleGlyphosate-resistant Lolium multiflorum in Chilean orchards
dc.typeartículo
dc.volumen43
sipa.codpersvinculados98569
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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