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dc.contributor.authorGUIMARÃES, C. M.pt_BR
dc.contributor.authorSTONE, L. F.pt_BR
dc.contributor.authorRANGEL, P. H. N.pt_BR
dc.contributor.authorSILVA, A. C. de L.pt_BR
dc.date.accessioned2013-07-02T11:11:11Zpt_BR
dc.date.available2013-07-02T11:11:11Zpt_BR
dc.date.created2013-07-02pt_BR
dc.date.issued2013pt_BR
dc.identifier.citationRevista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 17, n. 8, p. 805-810, 2013.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/961085pt_BR
dc.descriptionWater deficit is one of the environmental factors that cause a great reduction in the upland rice grain yield. The objective of this study was to evaluate genotypes of upland rice with broad genetic diversity for tolerance to this stress and to identify secondary traits for evaluation of this tolerance. Sixty-four genotypes were evaluated during two years at the Experiment Station of EMATER, in Porangatu, GO, under well-watered and water deficit conditions. The genotypes showed differences in grain yield and were influenced differently by the water treatments, both under a mild water deficit in the first year and under a severe one in the second year. The genotype grain yield under water deficiency was significantly and positively correlated with tiller fertility, number of panicles m-2, 100-grain weight, and plant height, and negatively with spikelet sterility and the number of days for the occurrence of 50% panicle emergence. It was also observed that the most productive genotypes under water deficit conditions showed lower leaf temperature, indicating improved water status. Nine genotypes were productive in both water conditions and three were productive only when well-watered.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleTolerance of upland rice genotypes to water deficit.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-07-02T11:11:11Zpt_BR
dc.subject.thesagroArrozpt_BR
dc.subject.thesagroOryza sativapt_BR
dc.subject.thesagroIrrigaçãopt_BR
dc.subject.thesagroDeficiência hídricapt_BR
dc.subject.thesagroTemperaturapt_BR
riaa.ainfo.id961085pt_BR
riaa.ainfo.lastupdate2013-07-02pt_BR
dc.contributor.institutionCLEBER MORAIS GUIMARAES, CNPAF; LUIS FERNANDO STONE, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; ANA CLAUDIA DE L. SILVA, doutoranda UNESP.pt_BR
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