Plant architecture of <i>Paspalum vaginatum</i> schwartz modified by nitrate and ammonium nutrition

cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloUniversidad Nacional de La Plata es
cic.versioninfo:eu-repo/semantics/publishedVersiones
dc.date.accessioned2016-08-19T12:52:20Z
dc.date.available2016-08-19T12:52:20Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/3843
dc.titlePlant architecture of <i>Paspalum vaginatum</i> schwartz modified by nitrate and ammonium nutritionen
dc.typeArtículoes
dcterms.abstract<i>Paspalum vaginatum</i> Schwartz plants were grown under greenhouse conditions in a continuous-flow hydroponic culture, containing NO-<sub>3</sub> or NH+<sub>4</sub> or NH<sub>4</sub>NO<sub>3</sub> as nitrogen source. After 30 days, the size of aerial biomass and root system decreased significantly when plants were supplied with NH+<sub>4</sub> as exclusive nitrogen source. Compared to NO-<sub>3</sub> treatment, reducing and non-reducing sugars were decreasing together with a significant increase in amino acids content. NH+<sub>4</sub>-nutrition caused tillers to grow toward an orthogravitropic position (average angle of 68° with respect to the horizontal), and with NO-<sub>3</sub>-nutrition, tillers tended to become diagravitropic (average angle of 23°). With NH<sub>4</sub>NO<sub>3</sub> all the parameters measured had values in between those of the other two sources. Thus, the morphologic differences among plants growing in NO-<sub>3</sub> or NH+<sub>4</sub> nutrition confirm the hypothesis that nitrogen source determines the growth habit of tillers in P. vaginatum by modulating the endogenous levels of reducing-non-reducing sugars.en
dcterms.alternativeArquitetura de Paspalum vaginatum Schwartz modificada pela nutrição de nitrato e amôniopt
dcterms.creator.authorBeltrano, Josées
dcterms.creator.authorRonco, Martaes
dcterms.creator.authorBarreiro, Robertoes
dcterms.creator.authorMontaldi, Edgardoes
dcterms.extentp. 1159-1166es
dcterms.identifier.otherISSN 0100-204Xes
dcterms.identifier.urlDocumento completoes
dcterms.isPartOf.issuevol. 34, nº 7es
dcterms.isPartOf.seriesPesquisa Agropecuaria Brasileiraes
dcterms.issued1999-07
dcterms.languageIngléses
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.subjectdiagravitropismen
dcterms.subjectorthogravitropismen
dcterms.subjectNitrógenoes
dcterms.subjectSacarosaes
dcterms.subject.materiaCiencias de las Plantas, Botánicaes
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