Fitotoxicidade do extrato etanólico de folhas de nabo (Raphanus sativus L.)

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dc.contributor.authorSilva, Regildo M. G. [UNESP]
dc.contributor.authorBrante, Rogério T. [UNESP]
dc.contributor.authorSantos, Valter H. M. [UNESP]
dc.contributor.authorMecina, Gustavo F. [UNESP]
dc.contributor.authorSilva, Luciana P.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFundação Educacional do Município de Assis - FEMA
dc.date.accessioned2018-12-11T16:55:37Z
dc.date.available2018-12-11T16:55:37Z
dc.date.issued2014-01-01
dc.description.abstractThe study of allelopathic activity has been aim of research that evaluates mainly species used in green fertilization. Raphanus sativus L. stands out among these species, because it shows high capacity for nutrient recycling, specially nitrogen and phosphorus, what makes it an advantageous cover plant in crop rotation systems. Considering the exposed, the present study had as objective the evaluation of the allelopathic and phytotoxic potentials of different concentrations of the R. sativus leaves ethanolic extract by mean of seeds germination analyses and development of lettuce seedlings, evaluating the phytotoxicity by determination of the mitotic index of lettuce root cells, realizing the phytochemical profile and investigating the antioxidant activity. It was possible to verify that the R. sativus extract interferes in the germination index, decreasing the germinability (5 mg.mL-1 = 9.84%; 10 mg.mL-1 = 11.91% and 20 mg.mL-1= 57.51%). In the lettuce seedlings growth, the extract of this species affected the roots and hypocotyls growth. It was possible to observe phenols and total flavonoids in the extract for the concentration of 1000μg.mL-1(161mg and 83.57 mg, respectively). It was also observed, higher antioxidant activity for the concentration of 1000 μg.mL-1 (89.76%). In the phytotoxicity assay was observed a dose dependent effect in the mitotic index and in the cellular events during cellular division. In this study it was possible to conclude that this species has allelochemical compounds which are able to interfere directly on the stabilization and development of other species.en
dc.description.affiliationEngenheiro Biotecnológico e Biólogo, Universidade Estadual Paulista - UNESP, Departamento de Ciências Biológicas - Laboratório de Fitoterápicos, Assis, SP
dc.description.affiliationMestreem Botânica, Instituto de Biociência, Departamento de Botânica- UNESP, Botucatu, SP
dc.description.affiliationFundação Educacional do Município de Assis - FEMA, Assis, SP
dc.description.affiliationUnespEngenheiro Biotecnológico e Biólogo, Universidade Estadual Paulista - UNESP, Departamento de Ciências Biológicas - Laboratório de Fitoterápicos, Assis, SP
dc.description.affiliationUnespMestreem Botânica, Instituto de Biociência, Departamento de Botânica- UNESP, Botucatu, SP
dc.format.extent891-902
dc.identifier.citationBioscience Journal, v. 30, n. 3, p. 891-902, 2014.
dc.identifier.issn1981-3163
dc.identifier.issn1516-3725
dc.identifier.scopus2-s2.0-84896939009
dc.identifier.urihttp://hdl.handle.net/11449/171507
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofBioscience Journal
dc.relation.ispartofsjr0,303
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAllelopathy
dc.subjectAntioxidant
dc.subjectDevelopment
dc.subjectGermination
dc.subjectLettuce
dc.titleFitotoxicidade do extrato etanólico de folhas de nabo (Raphanus sativus L.)pt
dc.title.alternativePhytotoxicity of ethanolic extract of turnip leaves (Raphanus sativus L.)en
dc.typeArtigo

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Artigos - Ciências Biológicas - FCLAS
Artigos - Botânica - IBB