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Nitrate reductase and glutamine synthetase activity in coffee leaves during fruit development Rev. Bras. Ciênc. Solo
Reis,Andre Rodrigues; Favarin,José Laércio; Gallo,Luiz Antônio; Malavolta,Eurípedes; Moraes,Milton Ferreira; Lavres Junior,José.
Nitrate reductase is the first enzyme in the pathway of nitrate reduction by plants, followed by glutamine synthetase, which incorporates ammonia to glutamine. The purpose of this study was to evaluate the nitrate reductase and glutamine synthetase activity, total soluble protein content, N and Ni content in coffee leaves during fruit development under field conditions to establish new informations to help assess the N nutritional status and fertilizer management. The experimental design was in randomized complete blocks, arranged in a 3 x 6 factorial design, with five replications. The treatments consisted of 3 N rates (0 - control, 150 and 300 kg ha-1) and six evaluation periods (January, February, March, April, May, and June) in six-year-old coffee...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica; Nitrogen assimilating enzymes; Nitrogen fertilizer.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000200009
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