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| Registros recuperados : 11 | |
| 3. |  | CHAVES, A. R. de M.; MATTA, F. M. da; MARTINS, S. C. V.; CELIN, E. F. Concentração de açúcares solúveis, amido e aminoácidos em cafeeiro em função da razão área foliar/número de frutos em diferentes posições na copa. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 8., 2013, Salvador. Sustentabilidade e inclusão Social. Brasília, DF: Embrapa Café, 2013.| Biblioteca(s): Embrapa Semiárido. |
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| 4. | | CHAVES, A. R. de M.; MATTA, F. M. da; CELIN, E. F.; MARTINS, S. C. V. Relação da morte de ramos com a razão área foliar por fruto, crescimento vegetativo e produção em diferentes posições da copa do cafeeiro. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 8., 2013, Salvador. Sustentabilidade e inclusão Social. Brasília, DF: Embrapa Café, 2013.| Biblioteca(s): Embrapa Semiárido. |
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| 6. | | CHAVES, A. R. de M.; MARTINS, S. C. V.; BATISTA, K. D.; CELIN, E. F.; MATTA, F. M. da. Varying leaf-to-fruit ratios affect branch growth and dieback, with little to no effect on photosynthesis, carbohydrate or mineral pools, in different canopy positions of field-grown coffee trees. Environmental and Experimental Botany, v. 77, p. 207?218, 2012.| Biblioteca(s): Embrapa Semiárido. |
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| 7. | | CHAVES, A. R. de M.; MARTINS, S. C. V.; BATISTA, K. D.; CELIN, E. F.; MATTA, F. M. da. Varying leaf-to-fruit ratios affect branch growth and dieback, with little to no effect on photosynthesis, carbohydrate or mineral pools, in different canopy positions of field-grown coffee trees. Environmental and Experimental Botany, v. 77, p. 207-218, 2012.| Biblioteca(s): Embrapa Roraima. |
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| 8. | | VIEIRA, N. G.; CARNEIRO, F. A.; SUJII, P. S.; ALEKCEVETCH, J. C.; FREIRE, L. P.; VINECKY, F.; ELBELT, S.; SILVA, V. A.; MATTA, F. M. da; FERRAO, M. A. G.; MARRACCINI, P.; ANDRADE, A. C. Different molecular mechanisms account for drought tolerance in Coffea canephora var. Conilon. Tropical Plant Biology, v. 6, p. 181-190, 2013.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 9. | | RODRIGUES, W. P.; MARTINS, M. Q.; FORTUNATO, A. S.; MARTINS, L. D.; PARTELLI, F. L.; CAMPOSTRINI, E.; SEMEDO, J. N.; PAIS, I. P.; SIMÕES-COSTA, S. C.; LEITÃO, A. E.; TOMAZ, M. A.; COLWEL, F.; SCOTTI-CAMPOS, P.; RODRIGUES, A. P.; GHINI, R.; LIDON, F. C.; MATTA, F. M. da; RAMALHO, J. C. Effect of high [CO2] and temperature on the photosynthetic enzymes and electron transport of Coffea Arabica L.. In: BRAZILIAN CONGRESS OF PLANT PHYSIOLOGY, 15.; BRAZILIAN-ISRAELI PLANT SCIENCES CONFERENCE, 1., 2015, Foz do Iguaçu. Abstracts... Foz do Iguaçu: Sociedade Brasileira de Fisiologia Vegetal, 2015. Ref. D-053.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 10. | | RODRIGUES, W. P.; MARTINS, M. Q.; FORTUNATO, A. S.; MARTINS, L. D.; PARTELLI, F. L.; CAMPOSTRINI, E.; SEMEDO, J. N.; PAIS, I. P.; TOMAZ, M. A.; COLWEL, F.; SCOTTI-CAMPOS, P.; GHINI, R.; LIDON, F. C.; MATTA, F. M. da; RAMALHO, J. C. Efeito do aumento da concentração de CO2 e da temperatura no transporte de elétrons em plantas de Coffee arabica L.. In: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 41, 2015, Poços de Caldas. Com mais tecnologia, mas café se aprecia: trabalhos apresentados. Poços de Caldas: Fundação Procafé, 2015. 247-249| Biblioteca(s): Embrapa Meio Ambiente. |
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| 11. | | MARTINS, L. D.; MARTINS, M. Q.; RODRIGUES, W. P.; FORTUNATO, A. S.; COLWELL, F.; PAIS, I. P.; SEMEDO, J. N.; RODRIGUES, A. P.; LEITÃO, A. E.; RIBEIRO-BARROS, A. I.; SCOTTI-CAMPOS, P.; PARTELLI, F. L.; TOMAZ, M. A.; CAMPOSTRINI, E.; GHINI, R.; LIDON, F. C.; MATTA, F. M. da; RAMALHO, J. C. Teor de carotenóides em folhas de plantas de C. arabica L. CV. IPR 108 cultivado sob aumento de efeito atmosférico da [CO2] e da temperatura. In: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 41, 2015, Poços de Caldas. Com mais tecnologia, mas café se aprecia: trabalhos apresentados. Poços de Caldas: Fundação Procafé, 2015. 237-238| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 11 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/03/2012 |
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Data da última atualização: |
09/04/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CHAVES, A. R. de M.; MARTINS, S. C. V.; BATISTA, K. D.; CELIN, E. F.; MATTA, F. M. da. |
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Afiliação: |
AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; SAMUEL C. V. MARTINS; KARINE D. BATISTA; ELAINE F. CELIN; FÁBIO M. DA MATTA. |
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Título: |
Varying leaf-to-fruit ratios affect branch growth and dieback, with little to no effect on photosynthesis, carbohydrate or mineral pools, in different canopy positions of field-grown coffee trees. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Environmental and Experimental Botany, v. 77, p. 207?218, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Heavy bearing is a typical phenomenon on unshaded coffee (Coffea arabica L.) trees and limits both the production and retention of leaves, leading to branch dieback, and, thus, results in a strong biennial bearing pattern. The major goals of this study were to investigate the physiological mechanisms that may be associated with the leaf-to-fruit ratio (LFR), branch dieback, biennial production and the relationships between carbohydrate and mineral fluctuations and branch dieback in coffee plants. The trees were grown in north?south-oriented hedgerows under conditions of full sunlight. Leaves and plagiotropic branches from the upper and lower strata of the east- and west-facing sides of the hedgerow were examined. A strong biennial pattern of coffee production was observed over three harvests. Overall, the east face of the hedgerow produced a more sellable crop than the west face, and this was associated with more light availability for the east-facing branches. The branch growth rate was higher with an increasing LFR during 2006?2007, regardless of the canopy position, and no compensatory increase in the photosynthetic rate was found in response to a decreasing LFR. Due to a relatively low fruit yield in 2007?2008, there was no branch dieback. The extent of branch dieback increased dramatically with decreasing LFR and was probably not closely related to changes in the concentrations of carbohydrates, amino acids and minerals. The extent of branch dieback was apparently unrelated to the differences in the photosynthetic rates per unit leaf area, carbon isotope composition, or oxidative stress, as was assessed by the electrolyte leakage from the leaf tissues. We discuss these responses in terms of the relative lack of branch autonomy in coffee trees. MenosHeavy bearing is a typical phenomenon on unshaded coffee (Coffea arabica L.) trees and limits both the production and retention of leaves, leading to branch dieback, and, thus, results in a strong biennial bearing pattern. The major goals of this study were to investigate the physiological mechanisms that may be associated with the leaf-to-fruit ratio (LFR), branch dieback, biennial production and the relationships between carbohydrate and mineral fluctuations and branch dieback in coffee plants. The trees were grown in north?south-oriented hedgerows under conditions of full sunlight. Leaves and plagiotropic branches from the upper and lower strata of the east- and west-facing sides of the hedgerow were examined. A strong biennial pattern of coffee production was observed over three harvests. Overall, the east face of the hedgerow produced a more sellable crop than the west face, and this was associated with more light availability for the east-facing branches. The branch growth rate was higher with an increasing LFR during 2006?2007, regardless of the canopy position, and no compensatory increase in the photosynthetic rate was found in response to a decreasing LFR. Due to a relatively low fruit yield in 2007?2008, there was no branch dieback. The extent of branch dieback increased dramatically with decreasing LFR and was probably not closely related to changes in the concentrations of carbohydrates, amino acids and minerals. The extent of branch dieback was apparently unrel... Mostrar Tudo |
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Palavras-Chave: |
Cultivo. |
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Thesagro: |
Café; Crescimento; Fotossíntese. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55950/1/Artigo-Environmental-and-Experimental-Botany-2012.pdf
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Marc: |
LEADER 02520naa a2200217 a 4500
001 1919316
005 2012-04-09
008 2012 bl uuuu u00u1 u #d
100 1 $aCHAVES, A. R. de M.
245 $aVarying leaf-to-fruit ratios affect branch growth and dieback, with little to no effect on photosynthesis, carbohydrate or mineral pools, in different canopy positions of field-grown coffee trees.$h[electronic resource]
260 $c2012
520 $aHeavy bearing is a typical phenomenon on unshaded coffee (Coffea arabica L.) trees and limits both the production and retention of leaves, leading to branch dieback, and, thus, results in a strong biennial bearing pattern. The major goals of this study were to investigate the physiological mechanisms that may be associated with the leaf-to-fruit ratio (LFR), branch dieback, biennial production and the relationships between carbohydrate and mineral fluctuations and branch dieback in coffee plants. The trees were grown in north?south-oriented hedgerows under conditions of full sunlight. Leaves and plagiotropic branches from the upper and lower strata of the east- and west-facing sides of the hedgerow were examined. A strong biennial pattern of coffee production was observed over three harvests. Overall, the east face of the hedgerow produced a more sellable crop than the west face, and this was associated with more light availability for the east-facing branches. The branch growth rate was higher with an increasing LFR during 2006?2007, regardless of the canopy position, and no compensatory increase in the photosynthetic rate was found in response to a decreasing LFR. Due to a relatively low fruit yield in 2007?2008, there was no branch dieback. The extent of branch dieback increased dramatically with decreasing LFR and was probably not closely related to changes in the concentrations of carbohydrates, amino acids and minerals. The extent of branch dieback was apparently unrelated to the differences in the photosynthetic rates per unit leaf area, carbon isotope composition, or oxidative stress, as was assessed by the electrolyte leakage from the leaf tissues. We discuss these responses in terms of the relative lack of branch autonomy in coffee trees.
650 $aCafé
650 $aCrescimento
650 $aFotossíntese
653 $aCultivo
700 1 $aMARTINS, S. C. V.
700 1 $aBATISTA, K. D.
700 1 $aCELIN, E. F.
700 1 $aMATTA, F. M. da
773 $tEnvironmental and Experimental Botany$gv. 77, p. 207?218, 2012.
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