Plant architecture of <i>Paspalum vaginatum</i> schwartz modified by nitrate and ammonium nutrition
| cic.isFulltext | true | es |
| cic.isPeerReviewed | true | es |
| cic.lugarDesarrollo | Universidad Nacional de La Plata | es |
| cic.version | info:eu-repo/semantics/publishedVersion | es |
| dc.date.accessioned | 2016-08-19T12:52:20Z | |
| dc.date.available | 2016-08-19T12:52:20Z | |
| dc.identifier.uri | https://digital.cic.gba.gob.ar/handle/11746/3843 | |
| dc.title | Plant architecture of <i>Paspalum vaginatum</i> schwartz modified by nitrate and ammonium nutrition | en |
| dc.type | Artículo | es |
| 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.alternative | Arquitetura de Paspalum vaginatum Schwartz modificada pela nutrição de nitrato e amônio | pt |
| dcterms.creator.author | Beltrano, José | es |
| dcterms.creator.author | Ronco, Marta | es |
| dcterms.creator.author | Barreiro, Roberto | es |
| dcterms.creator.author | Montaldi, Edgardo | es |
| dcterms.extent | p. 1159-1166 | es |
| dcterms.identifier.other | ISSN 0100-204X | es |
| dcterms.identifier.url | Documento completo | es |
| dcterms.isPartOf.issue | vol. 34, nº 7 | es |
| dcterms.isPartOf.series | Pesquisa Agropecuaria Brasileira | es |
| dcterms.issued | 1999-07 | |
| dcterms.language | Inglés | es |
| dcterms.license | Attribution 4.0 International (BY 4.0) | es |
| dcterms.subject | diagravitropism | en |
| dcterms.subject | orthogravitropism | en |
| dcterms.subject | Nitrógeno | es |
| dcterms.subject | Sacarosa | es |
| dcterms.subject.materia | Ciencias de las Plantas, Botánica | es |
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