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Registros recuperados : 45 | |
2. | | MARTINS, C. M.; MARTINS, S. C. S.; BORGES, W. L. Correção da acidez, adubação e fixação bológica. In: DOVALE, J. C.; BERTINI, C.; BORÉM, A. (Ed.). Feijão-caupi: do plantio à colheita. Viçosa, MG: Ed. UFV, 2017. Cap. 5, p. 89-112. Biblioteca(s): Embrapa Amapá. |
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9. | | ASSAD, E. D.; MARTINS, S. C.; BELTRÃO, N. E. de M.; PINTO, H. S. Impacts of climate change on the agricultural zoning of climate risk for cotton cultivation in Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 1, p. 1-8, jan. 2013. Biblioteca(s): Embrapa Agricultura Digital; Embrapa Unidades Centrais. |
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10. | | 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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11. | | MARTINS, S. C.; ASSAD, E. D.; PAVÃO, E.; LOPES-ASSAD, M. L. R. C. Inverting the carbon footprint in Brazilian agriculture: an estimate of the effects of the ABC plan. Revista Ciência, Tecnologia & Ambiente, Araras, v. 7, n. 1, p. 43-52, 2018. Biblioteca(s): Embrapa Agricultura Digital. |
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13. | | 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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14. | | ASSAD, E. D.; MARTINS, S. C.; CORDEIRO, L. A. M.; EVANGELISTA, B. A. Sequestro de carbono e mitigação de emissões de gases de efeito estufa pela adoção de sistemas integrados. In: BUNGENSTAB, D. J.; ALMEIDA, R. G. de; LAURA, V. A.; BALBINO, L. C.; FERREIRA, A. D. (Ed.). ILPF: inovação com integração de lavoura, pecuária e floresta. Brasília, DF: Embrapa, 2019. Cap. 11. p. 153-167. Biblioteca(s): Embrapa Agricultura Digital; Embrapa Cerrados; Embrapa Pesca e Aquicultura. |
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17. | | FEITOZA, R. M.; SILVA, L. L. da; PINHEIRO, M. de S.; MARTINS, S. C. S.; MARTINS, C. M. Diversidade bioquímica de estirpes de rizóbio do Semiárido. In: SIMPÓSIO DE MUDANÇAS CLIMÁTICAS E DESERTIFICAÇÃO NO SEMIÁRIDO BRASILEIRO, 4., 2015, Petrolina. Experiências e oportunidades para o desenvolvimento. Petrolina: Embrapa Semiárido, 2015. 1 CD-ROM. (Embrapa Semiárido. Documentos, 262). Biblioteca(s): Embrapa Semiárido. |
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18. | | JASMIM, J.; MARTINS, S. C.; GONÇALVES, F. S.; ASCARI, I. J.; CAMARGO, L. S. de A.; MENDEZ-OTERO, R. Development of bovine embryons in vitro in co-culture with mesenchymal stem cells and murine embryonic fibroblasts Animal Reproduction, v. 12, n. 3, p. 761. 2015. Edição dos proceedings do 29º Annual Meeting of the Brazilian Embryo Technology Society, 2015, Gramado. Biblioteca(s): Embrapa Gado de Leite. |
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19. | | SOUSA, J. B. de; PINHEIRO, M. de S.; CAVALCANTE, F. G.; MARTINS, S. C. S.; MARTINS, C. M. Caracterização de bactérias nativas de solo do Semiárido isoladas de nódulos de feijão-caupi. In: SIMPÓSIO DE MUDANÇAS CLIMÁTICAS E DESERTIFICAÇÃO NO SEMIÁRIDO BRASILEIRO, 4., 2015, Petrolina. Experiências e oportunidades para o desenvolvimento. Petrolina: Embrapa Semiárido, 2015. 1 CD-ROM. (Embrapa Semiárido. Documentos, 262). Biblioteca(s): Embrapa Semiárido. |
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20. | | MARTINS, S. C.; SALGADO, P. R.; VASCONCELLOS, E. B. C.; EVANGELISTA, B. A.; PINTO, H. S.; ASSAD, E. D. Capacidade de sequestro de CO2 em pastagens produtivas no bioma Cerrado. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. p. 1-4. 1 CD-ROM. Biblioteca(s): Embrapa Agricultura Digital. |
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Registros recuperados : 45 | |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
19/03/2012 |
Data da última atualização: |
09/04/2012 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CHAVES, A. R. de M.; MARTINS, S. C. V.; BATISTA, K. D.; CELIN, E. F.; MATTA, F. M. da. |
Afiliação: |
AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; SAMUEL C. V. MARTINS; KARINE D. BATISTA; ELAINE F. CELIN; FÁBIO M. DA MATTA. |
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. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Environmental and Experimental Botany, v. 77, p. 207?218, 2012. |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Cultivo. |
Thesagro: |
Café; Crescimento; Fotossíntese. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55950/1/Artigo-Environmental-and-Experimental-Botany-2012.pdf
|
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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