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Registro Completo |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
15/12/2022 |
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Data da última atualização: |
15/12/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, I. M. de A.; MEIRA, R. O.; LELIS, T. M.; CUNHA, R. N. V. da; LOPES, R.; PEREIRA, J. E. S. |
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Afiliação: |
INAÊ MARIÊ DE ARAÚJO SILVA, CENARGEN; RENNAN OLIVEIRA MEIRA, CENARGEN; THAUAN MARTINS LELIS, CENARGEN; RAIMUNDO NONATO VIEIRA DA CUNHA, CPAA; RICARDO LOPES, CPAA; JONNY EVERSON SCHERWINSKI PEREIRA, Cenargen. |
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Título: |
Calogênese de tecidos foliares de híbridos de palma de óleo (Elaeis oleifera x E. guineensis) visando a embriogênese somática. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE BIODIVERSIDADE E BIOTECNOLOGIA DA AMAZÔNIA, 2., 2022, Belém. Anais... Belém, PA: PPG-BIONORTE, 2022. |
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Idioma: |
Português |
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Conteúdo: |
Neste trabalho, objetivou-se avaliar a responsividade de segmentos foliares de dois híbridos interespecíficos de Elaeis oleifera x E. guineensis quanto à formação de calos visando a embriogênese somática. |
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Palavras-Chave: |
Calos. |
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Thesagro: |
Dendê; Elaeis Guineensis; Micropropagação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00969nam a2200217 a 4500
001 2149738
005 2022-12-15
008 2022 bl uuuu u01u1 u #d
100 1 $aSILVA, I. M. de A.
245 $aCalogênese de tecidos foliares de híbridos de palma de óleo (Elaeis oleifera x E. guineensis) visando a embriogênese somática.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE BIODIVERSIDADE E BIOTECNOLOGIA DA AMAZÔNIA, 2., 2022, Belém. Anais... Belém, PA: PPG-BIONORTE$c2022
520 $aNeste trabalho, objetivou-se avaliar a responsividade de segmentos foliares de dois híbridos interespecíficos de Elaeis oleifera x E. guineensis quanto à formação de calos visando a embriogênese somática.
650 $aDendê
650 $aElaeis Guineensis
650 $aMicropropagação
653 $aCalos
700 1 $aMEIRA, R. O.
700 1 $aLELIS, T. M.
700 1 $aCUNHA, R. N. V. da
700 1 $aLOPES, R.
700 1 $aPEREIRA, J. E. S.
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Registro original: |
Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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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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