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	Provedor de dados Ciencia e Investigación Agraria (1) Braz. J. Plant Physiol. (1) Autor Bown,Horacio E (1) Clinton,Peter W (1) Isaias,Rosy Mary dos Santos (1) Lemos Filho,José Pires de (1) Mason,Euan G (1) Watt,Michael S (1) Mais... Palavra-chave Quantum efficiency of PSII (2) Chlorophyll fluorescence (1) Electron transport (1) Genotype (1) Jacaranda tree (1) Nutrient limitation (1) Stomata (1) Water vapor conductance (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Journal article (1) Ano 2009 (1) 2004 (1) País Brazil (1) Chile (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Comparative stomatal conductance and chlorophyll a fluorescence in leaves vs. fruits of the cerrado legume tree, Dalbergia miscolobium Braz. J. Plant Physiol. Lemos Filho,José Pires de; Isaias,Rosy Mary dos Santos. The aim of this study was to compare water vapor conductance and chlorophyll a fluorescence between leaflets and fruits of Dalbergia miscolobium, the Jacaranda tree. The frequency of stomata on the leaflets was 20 times higher than that observed on the fruits, and this was related with the lower conductance of the fruits in comparison with the leaflets. The potential quantum yield of PSII (Fv /Fmax) was significantly lower in fruits than in leaflets. The Fv /Fmax values for leaflets increased to over 0.8 during the afternoon, indicating the occurrence of dynamic photoinhibition. In contrast, Fv /Fmax values for fruits remained low even at early morning, indicating the occurrence of chronic photoinhibition. The maximum values of effective quantum yield... Tipo: Info:eu-repo/semantics/article Palavras-chave: Jacaranda tree; Stomata; Quantum efficiency of PSII; Water vapor conductance. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200004 Chlorophyll fluorescence response of Pinus radiata clones to nitrogen and phosphorus supply Ciencia e Investigación Agraria Bown,Horacio E; Mason,Euan G; Clinton,Peter W; Watt,Michael S. Chlorophyll fluorescence responses to a factorial combination of nitrogen (N) and phosphorus (P) supply were measured in five clones of Pinus radiata cultivated in a greenhouse over twenty-four months. Chlorophyll fluorescence measurements were taken at months six (5 clones, 182 plants), nine (2 clones, 68 plants) and eighteen (2 clones, 48 plants). Plant growth in stem diameter, height, leaf area, fascicle mass, length and diameter were found to significantly increase with N and, to a lesser extent, P additions; and these values were greatest when both N and P were combined. Plant growth and fascicle size also varied significantly across clones and were generally consistent with the genotypic growth responses that were observed in the field. Dark (Fv /... Tipo: Journal article Palavras-chave: Chlorophyll fluorescence; Quantum efficiency of PSII; Electron transport; Genotype; Nutrient limitation. Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300012 Registros recuperados: 2 Primeira ... 1 ... Última

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