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| Registros recuperados : 96 | |
| 41. |  | ALENCAR, A. M. da S.; OLIVEIRA, V. X. A.; SILVA, E. S. e; PEDROZO, C. A.; BATISTA, K. D. Sobrevivência e crescimento inicial de Castanheira-do-Brasil em Roraima. In: SEMANA NACIONAL DE CIÊNCIA E TECNOLOGIA NO ESTADO DE RORAIMA, 10., 2015, Boa Vista. Resumos... Boa Vista, RR: UERR, 2015.| Biblioteca(s): Embrapa Roraima. |
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| 42. | | ALENCAR, A. M. da S.; OLIVEIRA, V. X. A.; COSTA, E. K. L. da; PEDROZO, C. A.; BATISTA, K. D. Sobrevivência e crescimento inicial de plantas de Castanha-do-brasil provenientes de diferentes Matrizes e populações nativas de Roraima. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 8., 2015, Goiânia. O melhoramento de plantas, o futuro da agricultura e a soberania nacional: anais. Goiânia: UFG: SBMP, 2015.| Biblioteca(s): Embrapa Roraima. |
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| 43. | | COSTA, E. K. L. da; TEIXEIRA, R. A.; PEDROZO, C. A.; BATISTA, K. D.; SMIDERLE, O. J. Taxa de florescimento e características morfológicas de sementes de plantas jovens de cedro doce. In: SEMANA NACIONAL DE CIÊNCIA E TECNOLOGIA NO ESTADO DE RORAIMA, SNCT-RR , 8., 2013. Boa Vista. Resumos... Boa Vista, RR: UERR, 2013.| Biblioteca(s): Embrapa Roraima. |
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| 45. | | SOUZA, J. C.; PEDROZO, C. A.; COSTA, E. K. L.; OLIVEIRA, V. X. A.; BATISTA, K. D. Efeitos de níveis de luminosidade e tipos de substrato no desenvolvimento inicial de mudas de taxi-branco. In: SEMANA NACIONAL DE CIÊNCIA E TECNOLOGIA NO ESTADO DE RORAIMA, SNCT-RR, 9., 2014. Resumos... Boa Vista, RR: UERR, 2014.| Biblioteca(s): Embrapa Roraima. |
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| 47. | | SIQUEIRA, B.; PEREIRA, W. J.; BATISTA, K. A.; OOMAH, B. D.; FERNANDES, K. F.; BASSINELLO, P. Z. Influence of storage on darkening and hardening of slow- and regular-darkening carioca bean (Phaseolus vulgasris L.) genotypes. Journal of Agricultural Studies, v. 2, n. 2, p. 87-104, Sept. 2014.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 49. | | EVANGELISTA, T. C.; ALBUQUERQUE, T. C. S. de; ALBUQUERQUE NETO, A. A. R. de; PEDROZO, C. A.; BATISTA, K. D. Manejo das plantas de castanheira-do-Brasil com poda de condução. In: SEMANA NACIONAL DE CIÊNCIA E TECNOLOGIA NO ESTADO DE RORAIMA, SNCT-RR , 8., 2013. Boa Vista. Resumos... Boa Vista, RR: UERR, 2013.| Biblioteca(s): Embrapa Roraima. |
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| 50. | | SANTOS, R. F. dos; BATISTA, K. D.; PEDROZO, C. A.; SILVA, J. Z. da; SILVA, Y. P. da. Densidade estomática de plantas de castanheira-do-brasil de duas procedências. In: CONGRESSO NACIONAL DO MEIO AMBIENTE, 16., 2019, Poços de Caldas. Justiça social e sustentabilidade medianizado pela economia verde: anais eletrônicos. Muzambinho: Instituto Federal de Educação, Ciência e Tecnologia do Sul de Minas Gerais, 2019.| Biblioteca(s): Embrapa Roraima. |
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| 52. | | PEDROZO, C. A.; ALBUQUERQUE, T. C. S. de; BATISTA, K. D.; SCHWENGBER, D. R.; CORDEIRO, A. C. C. Divergência Genética e correlação fenotípica entre caracteres dos frutos e das sementes em genótipos de Castanha-do Brasil. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 7., 2013, Uberlândia. Variedade melhorada: a força da nossa agricultura: anais. Viçosa, MG: SBMP, 2013.| Biblioteca(s): Embrapa Roraima. |
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| 53. | | BATISTA, K. T.; VIÉGAS, I. de J. M.; FRAZÃO, D. A. C.; SOUSA, G. O. de; VASCONCELOS, R. D. Avaliação de soluções nutritivas em plantas de Helicônia psittacorum (c.v Golden Torch). Horticultura Brasileira, Brasília, DF, v. 23, n. 2, p. 577-578, ago. 2005. Suplemento Edição dos resumos: CONGRESSO BRASILEIRO DE OLERICULTURA, 45.; CONGRESSO BRASILEIRO DE FLORICULTURA E PLANTAS ORNAMENTAIS, 15.; CONGRESSO BRASILEIRO DE CULTURA DE TECIDOS DE PLANTAS, 2., 2005, Fortaleza, CE.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 54. | | EVANGELISTA, T. C.; ALBUQUERQUE, T. C. S. de; PEDROZO, C. A.; BATISTA, K. D.; ALBUQUERQUE NETO, A. A. R. de. Efeito de níveis de sombreamento sobre o crescimento de mudas de castanheira do Brasil (Bertholletia excelsa Humb.& Bonpl.). In: SEMANA NACIONAL DE CIÊNCIA E TECNOLOGIA NO ESTADO DE RORAIMA, SNCT-RR , 8., 2013. Boa Vista. Resumos... Boa Vista, RR: UERR, 2013.| Biblioteca(s): Embrapa Roraima. |
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| 56. | | TEIXEIRA, R. A.; PEDROZO, C. A.; COSTA, E. K. L. da; BATISTA, K. D.; TONINI, H.; PESSONI, L. A. Correlações e divergência fenotípica entre genótipos cultivados de castanha-do-Brasil. Scientia Forestalis, Piracicaba, v. 43, n. 107, p. 523-531, set. 2015.| Biblioteca(s): Embrapa Florestas; Embrapa Roraima. |
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| 57. | | ALENCAR, A. M. da S.; OLIVEIRA, V. X. A.; PEDROZO, C. A.; CRUZ, S. L.; BATISTA, K. D. Crescimento de mudas de cedro doce (Pochota fendleri (Seem) Alverson & Duarte) em função do tempo de avaliação em viveiro. In: SEMANA NACIONAL DE CIÊNCIA E TECNOLOGIA NO ESTADO DE RORAIMA, 11., 2016, Boa Vista, RR. Resumos... Boa Vista, RR: UERR, 2016.| Biblioteca(s): Embrapa Roraima. |
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| 59. | | WADT, P. G. S.; SANTOS, H. G. dos; LUMBRERAS, J. F.; ANJOS, L. H. C. dos; BATISTA, K. D. A XII Reunião Brasileira de Classificação e Correlação de Solos e o resgate histórico das RCCs. In: LUMBRERAS, J. F.; SILVA, L. M. da; ANJOS, L. H. C. dos; OLIVEIRA, V. A. de; WADT, P. G. S.; PEREIRA, M. G.; DELARMELINDA-HONORÉ, E. A.; BURITY, K. T. L. (Ed.). Guia de campo da XII Reunião Brasileira de Classificação e Correlação de Solos: RCC de Rondônia. Brasília, DF: Embrapa, 2019. E-book. cap. 1.| Biblioteca(s): Embrapa Rondônia; Embrapa Roraima; Embrapa Solos. |
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| 60. | | 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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| Registros recuperados : 96 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Roraima. Para informações adicionais entre em contato com cpafrr.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
15/07/2013 |
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Data da última atualização: |
25/10/2018 |
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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 |
|
Marc: |
LEADER 02497naa a2200217 a 4500
001 1962146
005 2018-10-25
008 2012 bl --- 0-- 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.
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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