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	Provedor de dados Braz. J. Plant Physiol. (2) Autor Alves,Thiago H. (1) Portes,Maria T. (1) Prado,Carlos Henrique B. A. (1) Ronquim,Carlos Cesar (1) Souza,Gustavo M. (1) Souza,João Paulo de (1) Mais... Palavra-chave Sunflecks (2) Biomass partitioning (1) Cerrado (1) Chlorophyll fluorescence (1) Drought (1) Ecophysiology (1) Gas exchange (1) Irradiance (1) Leaf gas exchange (1) Light utilization (1) Tropical forest succession (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2009 (1) 2006 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Growth, photosynthesis and leaf water potential in young plants of Copaifera langsdorffii Desf. (Caesalpiniaceae) under contrasting irradiances Braz. J. Plant Physiol. Ronquim,Carlos Cesar; Prado,Carlos Henrique B. A.; Souza,João Paulo de. Growth and leaf nutrient content were compared in young potted plants of Copaifera langsdorffii in sunny and shaded areas without water stress. Besides, carbon assimilation and leaf water relations were evaluated by net photosynthesis, potential photochemical efficiency and leaf water potential during daily courses in dry and rainy periods under natural conditions in both contrasting irradiances. Higher values of total biomass, height and leaf area occurred in sunny than in shaded area. On the other hand, all young plants survived in shade under natural water stress probably by reason of fast and intense biomass accumulation in favor of roots in early development. There was no significant difference about nutrient concentration in leaves between plants... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Biomass partitioning; Chlorophyll fluorescence; Leaf gas exchange; Irradiance; Sunflecks. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000300004 Water deficit affects photosynthetic induction in Bauhinia forficata Link (Fabaceae) and Esenbeckia leiocarpa Engl. (Rutaceae) growing in understorey and gap conditions Braz. J. Plant Physiol. Portes,Maria T.; Alves,Thiago H.; Souza,Gustavo M.. In tropical forests, light is considered the most limiting resource for plant growth and reproduction. Besides light, water deficit leads invariably to a decrease in photosynthesis. Thus, despite of the unquestionable role of light in CO2 assimilation (A), it is expected that water deficit affects and limits the light utilization by plants. In this study, we investigated how water deficit influenced the photosynthetic induction of the early successional tree Bauhinia forficata (Fabaceae) and the late successional Esenbeckia leiocarpa (Rutaceae) in the understorey and in the forest gap. Field measurements were carried out in June and August 2006 in plants of approximately two-years-old. In August, the plants were subjected to a period of 45 d without rain... Tipo: Info:eu-repo/semantics/article Palavras-chave: Drought; Ecophysiology; Gas exchange; Light utilization; Sunflecks; Tropical forest succession. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000400007 Registros recuperados: 2 Primeira ... 1 ... Última

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