Differential phytotoxicity of glyphosate in maize seedlings following applications to roots or shoot

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dc.contributor.authorAlister, C
dc.contributor.authorKogan, M
dc.contributor.authorPino, I
dc.date.accessioned2024-01-10T13:12:22Z
dc.date.available2024-01-10T13:12:22Z
dc.date.issued2005
dc.description.abstractThe transport and differential phytotoxicity of glyphosate was investigated in maize seedlings following application of the herbicide to either roots or shoots. One-leaf maize seedlings (Zea mays L.) were maintained in graduated cylinders (250 mL) containing nutrient solution. Half of the test plants were placed in cylinders (100 mL) containing different C-14-glyphosate concentrations; the remainder received foliar appliation of C-14-glyphosate. After 26 It, the roots and the treated leaves were washed with distilled water, and the plants placed again in cylinders (250 mL) containing fresh nutrient solution for 5 days. Plants were weighed, and split into root, seed, cotyledon, coleoptile, mesocotyl, first leaf and apex. The recovery of 14 C-glyphosate was over 86%. For both application treatments, the shoot apex was the major sink of the mobilized glyphosate (47.9 +/- 2.93% for root absorption and 45.8 +/- 2.91% for foliar absorption). Expressed on a tissue fresh weight basis, approximately 0.26 mug a.e. g(-1) of glyphosate in the apex produced a 50% reduction of plant fresh weight (ED50) when the herbicide was applied to the root. However, the ED50 following foliar absorption was only 0.042 mug a.e. g(-1) in the apex, thus maize seedlings were much more sensitive to foliar application of the herbicide.
dc.fechaingreso.objetodigital2024-05-07
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1111/j.1365-3180.2004.00424.x
dc.identifier.eissn1365-3180
dc.identifier.issn0043-1737
dc.identifier.urihttps://doi.org/10.1111/j.1365-3180.2004.00424.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78175
dc.identifier.wosidWOS:000226931400003
dc.information.autorucAgronomía e Ing. Forestal;Kogan M;S/I;98569
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final32
dc.pagina.inicio27
dc.publisherWILEY
dc.revistaWEED RESEARCH
dc.rightsacceso restringido
dc.subjectglyphosate
dc.subjectabsorption
dc.subjectfoliar activity
dc.subjectroot activity
dc.subjecttranslocation
dc.subjectdistribution
dc.subjectED50
dc.subjectHERBICIDE GLYPHOSATE
dc.subjectC-14 GLYPHOSATE
dc.subjectTRANSLOCATION
dc.subjectADSORPTION
dc.subjectSOILS
dc.subjectABSORPTION
dc.subjectDEGRADATION
dc.subjectMOBILITY
dc.subjectTOXICITY
dc.subjectPLANTS
dc.subject.ods02 Zero Hunger
dc.subject.ods13 Climate Action
dc.subject.odspa02 Hambre cero
dc.subject.odspa13 Acción por el clima
dc.titleDifferential phytotoxicity of glyphosate in maize seedlings following applications to roots or shoot
dc.typeartículo
dc.volumen45
sipa.codpersvinculados98569
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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