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	Provedor de dados AGRIAMBI (2) Autor Guimarães,Cleber M. (2) Silva,Ana C. de L. (2) Stone,Luís F. (2) Rangel,Paulo H. N. (1) Palavra-chave Grain yield (1) Growth stages (1) Irrigation (1) Irrigation withholding. (1) Leaf temperature (1) Oryza sativa (1) Oryza sativa L. (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (1) 2013 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Tolerance of upland rice genotypes to water deficit AGRIAMBI Guimarães,Cleber M.; Stone,Luís F.; Rangel,Paulo H. N.; Silva,Ana C. de L.. Water 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Irrigation; Grain yield; Leaf temperature. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000800001 Evapotranspiration and grain yield of upland rice as affected by water deficit AGRIAMBI Guimarães,Cleber M.; Stone,Luís F.; Silva,Ana C. de L.. ABSTRACT To achieve an accurate phenotyping for drought tolerance, it is important to control water stress levels and timing. This study aimed to determine water use by upland rice plants during periods of irrigation withholding and its relationship with grain yield in order to increase the efficiency of this phenotyping. Two experiments were carried out in a randomized block design in which six water treatments (irrigation withholding for periods of 2, 4, 6, 8, 10 and 12 days) were compared, with four replicates. In the first experiment, treatments were applied at the R3 stage (panicle exsertion) and, in the second, at the R5 stage (beginning of grain filling). The amount of water evapotranspired was determined by the difference between the soil water... Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa L.; Growth stages; Irrigation withholding.. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500441 Registros recuperados: 2 Primeira ... 1 ... Última

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