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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
04/08/2015 |
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Data da última atualização: |
13/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAULA NETO, A.; FAVARIN, J. L.; REIS, A. R. dos; TEZOTTO, T.; ALMEIDA, R. E. M. de; LAVRES JUNIOR, J.; GALLO, L. A. |
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Afiliação: |
ANA PAULA NETO, ESALQ; JOSE LAERCIO FAVARIN, ESALQ; ANDRE RODRIGUES DOS REIS, UNESP; TIAGO TEZOTTO, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; JOSE LAVRES JUNIOR, CENA; LUIZ ANTONIO GALLO, ESALQ. |
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Título: |
Nitrogen metabolism in coffee plants in response to nitrogen supply by fertigation. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Theoretical and Experimental Plant Physiology, v. 27, n. 1, p. 41-50, Mar. 2015. |
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DOI: |
10.1007/s40626-014-0030-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Coffee plants require high application rates of nitrogen (N) to produce coffee beans. However, information regarding plant N uptake and assimilation under intensive high-technology cultivation systems is scarce, a situation which restrains the maximizing productivity with minimal N rates. The aim of this study was to evaluate N assimilation enzymes such as nitrate reductase (EC 1.6.6.1), glutamine synthetase (EC 6.3.1.2), urease (EC 3.5.1.5), and N compounds of coffee plants during a phenological cycle in response to N applied by fertigation. Our study was carried out with 7-year-old trees of Coffea arabica L., under a center pivot sprinkler irrigation and fertigation system, with five N rates (0, 200, 400, 600, and 800 kg ha−1) applied to the coffee field. The results of the present study suggest that both N metabolism enzymes, and the content of nitrate and ammonium in coffee were directly related to the phenological cycle. The N fertigation rates are correlated with the N and amino acid contente. Nitrate reductase and urease showed higher activities before anthesis and during grain filling. Glutamine synthetase showed highest activities during rapid grain expansion. The data also indicate that there is merit in gaining greater understanding of N metabolism in coffee plants grown under high-intensive systems. There is therefore merit in conducting further research on how monitoring the N assimilation enzymes might be used to improve fertilizer management of coffee in commercial orchards. MenosCoffee plants require high application rates of nitrogen (N) to produce coffee beans. However, information regarding plant N uptake and assimilation under intensive high-technology cultivation systems is scarce, a situation which restrains the maximizing productivity with minimal N rates. The aim of this study was to evaluate N assimilation enzymes such as nitrate reductase (EC 1.6.6.1), glutamine synthetase (EC 6.3.1.2), urease (EC 3.5.1.5), and N compounds of coffee plants during a phenological cycle in response to N applied by fertigation. Our study was carried out with 7-year-old trees of Coffea arabica L., under a center pivot sprinkler irrigation and fertigation system, with five N rates (0, 200, 400, 600, and 800 kg ha−1) applied to the coffee field. The results of the present study suggest that both N metabolism enzymes, and the content of nitrate and ammonium in coffee were directly related to the phenological cycle. The N fertigation rates are correlated with the N and amino acid contente. Nitrate reductase and urease showed higher activities before anthesis and during grain filling. Glutamine synthetase showed highest activities during rapid grain expansion. The data also indicate that there is merit in gaining greater understanding of N metabolism in coffee plants grown under high-intensive systems. There is therefore merit in conducting further research on how monitoring the N assimilation enzymes might be used to improve fertilizer management of coffee in... Mostrar Tudo |
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Thesagro: |
Café; Coffea Arábica; Nitrogênio; Uréia. |
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Thesaurus Nal: |
Fertigation; Glutamate-ammonia ligase. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127447/1/CNPASA2015-1.pdf
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Marc: |
LEADER 02343naa a2200277 a 4500
001 2021311
005 2017-10-13
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1007/s40626-014-0030-2$2DOI
100 1 $aPAULA NETO, A.
245 $aNitrogen metabolism in coffee plants in response to nitrogen supply by fertigation.$h[electronic resource]
260 $c2015
520 $aCoffee plants require high application rates of nitrogen (N) to produce coffee beans. However, information regarding plant N uptake and assimilation under intensive high-technology cultivation systems is scarce, a situation which restrains the maximizing productivity with minimal N rates. The aim of this study was to evaluate N assimilation enzymes such as nitrate reductase (EC 1.6.6.1), glutamine synthetase (EC 6.3.1.2), urease (EC 3.5.1.5), and N compounds of coffee plants during a phenological cycle in response to N applied by fertigation. Our study was carried out with 7-year-old trees of Coffea arabica L., under a center pivot sprinkler irrigation and fertigation system, with five N rates (0, 200, 400, 600, and 800 kg ha−1) applied to the coffee field. The results of the present study suggest that both N metabolism enzymes, and the content of nitrate and ammonium in coffee were directly related to the phenological cycle. The N fertigation rates are correlated with the N and amino acid contente. Nitrate reductase and urease showed higher activities before anthesis and during grain filling. Glutamine synthetase showed highest activities during rapid grain expansion. The data also indicate that there is merit in gaining greater understanding of N metabolism in coffee plants grown under high-intensive systems. There is therefore merit in conducting further research on how monitoring the N assimilation enzymes might be used to improve fertilizer management of coffee in commercial orchards.
650 $aFertigation
650 $aGlutamate-ammonia ligase
650 $aCafé
650 $aCoffea Arábica
650 $aNitrogênio
650 $aUréia
700 1 $aFAVARIN, J. L.
700 1 $aREIS, A. R. dos
700 1 $aTEZOTTO, T.
700 1 $aALMEIDA, R. E. M. de
700 1 $aLAVRES JUNIOR, J.
700 1 $aGALLO, L. A.
773 $tTheoretical and Experimental Plant Physiology$gv. 27, n. 1, p. 41-50, Mar. 2015.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
23/09/2013 |
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Data da última atualização: |
24/09/2013 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
KRÜGER, F. O; RIBEIRO, P. R. G.; VAZ, C. F.; SILVA, M. G.; MARTINS, A. B. N.; COSTA, C. J.; FRANCO, D. F. |
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Afiliação: |
CAROLINE JACOME COSTA, CPACT. |
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Título: |
Avaliação da qualidade fisiológica de sementes de arroz irrigado tratadas com fungicida. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Informativo ABRATES, Londrina, v. 23, n. 2, set. 2013. Edição dos Anais do XVIII Congresso Brasileiro de Sementes., Florianópolis, 2013. |
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Idioma: |
Português |
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Palavras-Chave: |
Oryza sativa L. |
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Thesagro: |
Germinação. |
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Thesaurus NAL: |
vigor. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/89997/1/Avaliacao-da-germinacao-de-sementes-de-rucula-submetidas-a-diferentes-temperaturas.PDF
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Marc: |
LEADER 00710nam a2200205 a 4500
001 1966885
005 2013-09-24
008 2013 bl uuuu u00u1 u #d
100 1 $aKRÜGER, F. O
245 $aAvaliação da qualidade fisiológica de sementes de arroz irrigado tratadas com fungicida.$h[electronic resource]
260 $aInformativo ABRATES, Londrina, v. 23, n. 2, set. 2013. Edição dos Anais do XVIII Congresso Brasileiro de Sementes., Florianópolis, 2013.$c2013
650 $avigor
650 $aGerminação
653 $aOryza sativa L
700 1 $aRIBEIRO, P. R. G.
700 1 $aVAZ, C. F.
700 1 $aSILVA, M. G.
700 1 $aMARTINS, A. B. N.
700 1 $aCOSTA, C. J.
700 1 $aFRANCO, D. F.
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Embrapa Clima Temperado (CPACT) |
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