CHEMICAL CONTROL AND MORPHOANATOMICAL ANALYSIS OF LEAVES OF DIFFERENT POPULATIONS OF SOURGRASS

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dc.contributor.authorGomes, L. J. P. [UNESP]
dc.contributor.authorSantos, J. [UNESP]
dc.contributor.authorGasparino, E. C. [UNESP]
dc.contributor.authorCorreia, N. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2018-11-26T15:44:05Z
dc.date.available2018-11-26T15:44:05Z
dc.date.issued2017-01-01
dc.description.abstractDigitaria insularis has been selected by frequent glyphosate applications both in no-till areas and in fruit orchards. The objective of this paper was to evaluate control efficacy of D. insularis populations by glyphosate, alone and mixed with quizalofop-p-tefuryl, as well as classify them for herbicide sensitivity as susceptible, moderately susceptible and tolerant. This study also aimed to evaluate the relations between herbicide sensitivity and morphoanatomic features of leaf tissues. For chemical control, the experiment was conducted in a completely randomized design, with a 12 x 4 factorial arrangement with four replications. Twelve populations of D. insularis were treated with glyphosate alone at two concentrations (1.44 and 2.16 kg a. e. ha(-1)) and with the mixture of glyphosate (2.16 kg a. e. ha(-1)) and quizalofop-p-tefuryl (0.12 kg a. i. ha(-1)). One treatment without herbicide application was maintained for each plant population. Evaluations about the morphoanatomic features and wax content of leaves from the twelve plant populations were made under laboratory conditions. Populations 3, 5, 6 and 8 were considered to be susceptible; 9, 10 and 12 were considered as moderately susceptible; 1, 2, 4, 7 and 11 were considered tolerant to glyphosate. However, populations within each group (susceptible, moderately susceptible and tolerant) did not have similar characteristics that justify their response to glyphosate. Differences relative to herbicide translocation and/or plant physiology could account for the chemical control results for these populations.en
dc.description.affiliationUniv Estadual Paulista, Jaboticabal, SP, Brazil
dc.description.affiliationEmbrapa Hortalicas, Brasilia, DF, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Jaboticabal, SP, Brazil
dc.format.extent11
dc.identifierhttp://dx.doi.org/10.1590/S0100-83582017350100008
dc.identifier.citationPlanta Daninha. Vicosa: Univ Federal Vicosa, v. 35, 11 p., 2017.
dc.identifier.doi10.1590/S0100-83582017350100008
dc.identifier.fileS0100-83582017000100202.pdf
dc.identifier.issn0100-8358
dc.identifier.scieloS0100-83582017000100202
dc.identifier.urihttp://hdl.handle.net/11449/159507
dc.identifier.wosWOS:000399157700002
dc.language.isoeng
dc.publisherUniv Federal Vicosa
dc.relation.ispartofPlanta Daninha
dc.relation.ispartofsjr0,365
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectDigitaria insularis
dc.subjectglyphosate
dc.subjecttolerance
dc.subjectgenetic variability
dc.titleCHEMICAL CONTROL AND MORPHOANATOMICAL ANALYSIS OF LEAVES OF DIFFERENT POPULATIONS OF SOURGRASSen
dc.typeArtigo
dcterms.rightsHolderUniv Federal Vicosa
unesp.author.lattes1471049145981073[3]
unesp.author.orcid0000-0001-6078-7341[3]

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