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| Registros recuperados : 87 | |
| 21. |  | 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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| 23. | | MORGANTE, C. V.; CHAVES, A. R. de M.; MOTA, A. P. Z.; AIDAR, S. de T. Transcriptome analysis of the vegetative desiccation tolerance plant Tripogonella spicata(Nees) P.M.Peterson & Romasch. In: BRAZILIAN BIOTECHNOLOGY CONGRESS, 7.; BIOTECHNOLOGY IBERO-AMERICAN CONGRESS, 2., 2018, Brasília, DF. Proceedings... Brasília, DF: SBBiotec, 2018.| Biblioteca(s): Embrapa Semiárido. |
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| 24. | | SANTOS, L. M.; FERREIRA, P. P. B.; CHAVES, A. R. de M.; BASTOS, D. C.; SILVA, S. de O. e. Comportamento ecofisiológico de cultivares de laranjeiras (Citrus sinensis L.) no Semiárido brasileiro. In: JORNADA DE INTEGRAÇÃO DA PÓS-GRADUAÇÃO DA EMBRAPA SEMIÁRIDO, 3., 2018, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2018. p. 17-22. (Embrapa Semiárido. Documentos, 284).| Biblioteca(s): Embrapa Semiárido. |
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| 25. | | ANTUNES, W. C.; MENDES, K. R.; CHAVES, A. R. de M.; OMETTO, J. P.; JARMA-OROZCO, A.; POMPELLI, M. F. Spondias tuberosa trees grown in tropical, wet environments are more susceptible to drought than those grown in arid environments. Revista Colombiana de Ciencias Hortícolas, v. 10, n. 1, p. 9-27, ene./jun. 2016.| Biblioteca(s): Embrapa Semiárido. |
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| 26. | | SANTOS, L. M.; FERREIRA, P. P. B.; CHAVES, A. R. de M.; BASTOS, D. C.; SILVA, S. de O. e. Índice de clorofila em laranjeira Sincorá enxertadas em diferentes porta-enxertos cultivadas no Nordeste. In: SIMPÓSIO BRASILEIRO DE RECURSOS NATURAIS DO SEMIÁRIDO, 4., 2019, Crato, CE. Seminário e sociedade: sustentabilidade para gerações futuras. Crato: Universidade Federal do Cariri: Universidade Federal do Ceará, 2019.| Biblioteca(s): Embrapa Semiárido. |
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| 29. | | BARBOSA, B. D. R.; SANTOS, L. M.; TEIXEIRA, R. P.; CHAVES, A. R. de M.; BASSOI, L. H. Avaliação da dinâmica da água no solo, evapotranspiração da cultura e estado hídrico da videira de vinho. In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 9., 2014, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2014. p.117-122 (Embrapa Semiárido. Documentos, 261).| Biblioteca(s): Embrapa Semiárido. |
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| 30. | | CHAVES, A. R. de M.; SILVA, D. J.; LEAO, P. C. de S.; FERREIRA, P. P. B.; SANTOS, L. M. Efeito de fontes diferentes de nitrogênio nas trocas gasosas em uva 'BRS Vitória' cultivada no Submédio do Vale do São Francisco. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 26., 2019, Juazeiro, BA/Petrolina, PE. Fruticultura de precisão: desafios e oportunidades - anais. Petrolina: Embrapa Semiárido: UNIVASF: SBF, 2019. p. 375-378.| Biblioteca(s): Embrapa Semiárido. |
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| 31. | | SANTOS, L. M.; FERREIRA, P. P. B.; CHAVES, A. R. de M.; BASTOS, D. C.; SILVA, S. de O. e. Características físico-químicas de frutos de laranjeira Sincorá cultivada sobre diferentes porta-enxertos em Juazeiro-BA. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 26., 2019, Juazeiro, BA/Petrolina, PE. Fruticultura de precisão: desafios e oportunidades - anais. Petrolina: Embrapa Semiárido: UNIVASF: SBF, 2019. p. 1159-1162.| Biblioteca(s): Embrapa Semiárido. |
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| 32. | | SANTOS, L. M.; SOUZA, D. R. M. de; SILVA, A. O. da; SILVA, D. J.; CHAVES, A. R. de M. Aspectos ecofisiológicos em videira fertirrigada com diferentes concentrações de nitrogênio e potássio. In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 10., 2015, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2015. p. 81-86. 1 CD-ROM. (Embrapa Semiárido. Documentos, 264).| Biblioteca(s): Embrapa Semiárido. |
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| 35. | | SILVA, G. N. da; SILVA, T. de M.; DEON, M. D.; BIASOTO, A. C. T.; CHAVES, A. R. de M. Nutrição e ecofisiologia de videira Aragonez com a aplicação de tratamentos para alteração do balanço de cátions do solo. In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 13., 2018, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2018. p. 377-383. (Embrapa Semiárido. Documentos, 283).| Biblioteca(s): Embrapa Semiárido. |
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| 38. | | SANTOS, T. M.; VOLTOLINI, T. V.; ANGELOTTI, F.; AIDAR, S. de T.; CHAVES, A. R. de M. Productive and morphogenetic responses of buffel grass at different air temperatures and CO2 concentrations. Revista Brasileira de Zootecnia, Viçosa, MG, v. 43, n. 8, p. 404-409, 2014.| Biblioteca(s): Embrapa Semiárido. |
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| 39. | | FERREIRA, P. P. B.; NASCIMENTO, A. A. P. do; POMPELLI, M. F.; PINTO, J. M.; CHAVES, A. R. de M. Respostas ecofisiológicas de plantas de Jatropha curcas L. irrigadas com água salina. In: JORNADA DE INTEGRAÇÃO DA PÓS-GRADUAÇÃO DA EMBRAPA SEMIÁRIDO, 3., 2018, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2018. p. 165-169. (Embrapa Semiárido. Documentos, 284).| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 87 | |
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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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