Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1044456
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dc.contributor.authorALVAREZ, R. de C. F.pt_BR
dc.contributor.authorCRUSCIOL, C. A. C.pt_BR
dc.contributor.authorNASCENTE, A. S.pt_BR
dc.contributor.authorRODRIGUES, J. D.pt_BR
dc.contributor.authorHABERMANN, G.pt_BR
dc.contributor.authorPAIVA NETO, V. B. dept_BR
dc.date.accessioned2016-05-04T11:11:11Zpt_BR
dc.date.available2016-05-04T11:11:11Zpt_BR
dc.date.created2016-05-04pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationRevista Caatinga, Mossoró, v. 29, n. 2, p. 320-326, abr./jun. 2016.pt_BR
dc.identifier.issn1983-2125pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1044456pt_BR
dc.descriptionA major problem affecting some upland rice cultivars is the increase in plant size when subjected to high doses of nitrogen fertilizer, leading to high levels of lodging. A method to reduce the height of upland rice, and therefore lodging, would be to use plant growth regulators. However, little information exists on the effect of these regulators on plant physiological processes. Therefore, the objective of this study was to evaluate the influence of trinexapac-ethyl application in upland rice via analysis of growth and gas exchange. The experiment was carried out under greenhouse conditions using the BRS Primavera cultivar. A completely randomized design with eight replications was used. Treatments were carried out with and without the application of the plant growth regulator, and plants were subject to two-stage assessments in which physiological and gas-exchange indices were measured. The use of trinexapac-ethyl improved the growth of rice plants from the flowering to the physiological maturity stage, resulting in higher values of leaf area ratio, specific leaf area, and leaf matter ratio in treated plants. At the same time, it provided smaller reduction in net CO2 assimilation at the physiological maturity stage. Thus, net/apparent assimilation rate did not change after the application of growth regulator, but relative growth rate decreased in these treated plants. These results indicate the occurrence of self-shading in rice plants induced by what might be a supra-optimum trinexapac-ethyl concentration.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectProcesso fisiológicopt_BR
dc.titleTrinexapac-ethyl affects growth and gas exchange of upland rice.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-03-03T11:11:11Zpt_BR
dc.subject.thesagroArrozpt_BR
dc.subject.thesagroOryza sativapt_BR
dc.subject.thesagroRegulador de crescimentopt_BR
dc.subject.thesagroFertilizante nitrogenadopt_BR
riaa.ainfo.id1044456pt_BR
riaa.ainfo.lastupdate2017-03-03pt_BR
dc.contributor.institutionRITA DE CASSIA FELIX ALVAREZ, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; CARLOS ALEXANDRE COSTA CRUSCIOL, UNESP, Botucatu-SP; ADRIANO STEPHAN NASCENTE, CNPAF; JOÃO DOMINGOS RODRIGUES, UNESP, Botucatu-SP; GUSTAVO HABERMANN, UNESP, Rio Claro-SP; VESPASIANO BORGES DE PAIVA NETO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL.pt_BR
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