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	Provedor de dados Braz. J. Plant Physiol. (1) Autor Campostrini,Eliemar (1) Oliveira,Jurandi Gonçalves de (1) Torres Netto,Alena (1) Yamanishi,Osvaldo Kiyoshi (1) Palavra-chave Nutrient content (1) Photosynthetic pigments (1) SPAD-502 (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2002 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Portable chlorophyll meter for the quantification of photosynthetic pigments, nitrogen and the possible use for assessment of the photochemical process in Carica papaya L. Braz. J. Plant Physiol. Torres Netto,Alena; Campostrini,Eliemar; Oliveira,Jurandi Gonçalves de; Yamanishi,Osvaldo Kiyoshi. The techniques utilized to extract chlorophyll from plant materials are destructive and based on methods that use organic solvents. This study proposes the non-destructive quantification of chlorophyll and nitrogen concentration using a portable chlorophyll meter (SPAD-502). Further, was possible to establish relationships between chlorophyll fluorescence and SPAD-502 values. This methodology could save time, space and resources, and could be used for analysis of the photosynthetic processes. Papaya leaves (Solo and Formosa groups) of different ages were collected from 15-month-old plants cultivated in a commercial field in São Francisco de Itabapoana, Rio de Janeiro State (41(0):15W; 21(0):27S). Correlations were established between the chlorophyll... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nutrient content; Photosynthetic pigments; SPAD-502. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000300004 Registros recuperados: 1 Primeira ... 1 ... Última

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