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	Provedor de dados Rev. Bras. Fisiol. Veg. (2) Autor DA MATTA,FÁBIO M. (2) AMARAL,JOSÉ A.T. (1) BARROS,RAIMUNDO S. (1) LOOS,RODOLFO A. (1) RENA,ALEMAR B. (1) RODRIGUES,RODRIGO (1) Mais... Palavra-chave Amino acids (1) Ammonium (1) Carbon assimilation rate (1) Coffea arabica (1) Nitrate (1) Photosynthetic oxygen evolution (1) Specific leaf area (1) Starch (1) Sugars (1) Temperature (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2001 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Actual and potential photosynthetic rates of tropical crop species Rev. Bras. Fisiol. Veg. DA MATTA,FÁBIO M.; LOOS,RODOLFO A.; RODRIGUES,RODRIGO; BARROS,RAIMUNDO S.. The actual (A) and potential (Apot) photosynthetic rates of C3 and C4 tropical crop species grown under greenhouse conditions was compared. The following species were investigated: Oryza sativa, Phaseolus vulgaris, Glycine max, Helianthus annuus, Gossypium hirsutum, Manihot esculenta, Theobroma cacao, Coffea arabica, Hevea brasiliensis, and Eucalyptus urophylla × E. grandis, all from the C3 group, and Amaranthus sp., Panicum maximum, Pennisetum purpureum, Zea mays and Saccharum officinarum, from the C4 group. A, determined under non-limiting light at ambient temperature and CO2, was measured with an infrared gas analyser, whilst Apot, determined under saturating light and CO2 at an optimal temperature (35 ºC for all species), was gauged with a gas-phase... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon assimilation rate; Photosynthetic oxygen evolution; Specific leaf area. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100003 Effects of fruiting on the growth of Arabica coffee trees as related to carbohydrate and nitrogen status and to nitrate reductase activity Rev. Bras. Fisiol. Veg. AMARAL,JOSÉ A.T.; DA MATTA,FÁBIO M.; RENA,ALEMAR B.. Active vegetative and reproductive growth in field-grown trees of Coffea arabica L. in Viçosa (20º45’S, 650 m altitude), south-eastern Brazil, occur concurrently. The overall patterns of branch growth and leaf area gain were to a certain extent altered by fruit removal, with growth rates being remarkably greater in de-fruited trees. The content of N-NO3 was not affected by fruiting, whilst that of amino-N was greater in de-fruited than fruiting trees most of the time, but the differences were not large enough to have significantly contributed to the increased growth rates in de-fruited trees. Leaf nitrate reductase activity was greater in plants bearing fruit than in non-bearing ones most of the time; activity was roughly inversely associated with growth.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amino acids; Ammonium; Coffea arabica; Nitrate; Starch; Sugars; Temperature. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100008 Registros recuperados: 2 Primeira ... 1 ... Última

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