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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
22/02/2010 |
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Data da última atualização: |
16/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CORDEIRO, Y. E. M.; PINHEIRO, H. A.; SANTOS FILHO, B. G. dos; CORREA, S. S.; SILVA, J. R. R. e; DIAS-FILHO, M. B. |
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Afiliação: |
UFRA; UFRA; UFRA; UFRA; UFRA; MOACYR BERNARDINO DIAS FILHO, CPATU. |
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Título: |
Physiological and morphological responses of young mahogany (Swietenia macrophylla King) plants to drought. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 258, n. 7, p. 1449-1455, Sep. 2009. |
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DOI: |
10.1016/j.foreco.2009.06.054 |
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Idioma: |
Inglês |
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Conteúdo: |
Young mahogany (Swietenia macrophylla King) plants were grown under either well-watered (pre-dawn leaf water potential, ?pd, ca. ?0.40 MPa) or drought (?pd, ca. ?3.52 MPa) conditions to examine some physiological strategies that allow the maintenance of leaf turgor. In well-watered plants, stomatal conductance (gs) was nearly constant (440 mmol m?2 s?1) between 7:00 and 13:00 h. This was accomplished by significant increases in transpiration (E) and apparent total hydraulic conductance (KT), in which averages were higher at 13:00 h. From 13:00 to 17:00 h, gs, E, and KT decreased sharply, reaching their lower values at 17:00 h. In these plants, significant increases in height (116%), stem diameter (50%) and leaf area (200%) were registered over the experimental period (20 days). Analyses of linear regression between gs or E and leaf-to-air vapor pressure deficit (?w) were not significant. In water-stressed plants, gs and E were higher at 7:00 h and lower from 9:00 to 17:00 h, while KT was higher in early morning (7:00 h) and in late afternoon (17:00 h) than between 9:00 and 15:00 h. Moreover, both gs and E decreased potentially (P < 0.001) with the diurnal increases on ?w. Drought also decreased leaf and leaflet numbers and reduced total leaf area, but had no effect on stem height and diameter. Leaf proline was higher (ca. 400%, between 13:00 and 15:00 h) in water-stressed plants, suggesting osmotic adjustment under drought. Twelve hours after resumption of irrigation, ?pd was similar (P > 0.05) between well-watered and drought-stressed plants, suggesting an ability of plants to recover turgor after stress cessation. Altogether, our data support the hypothesis that young mahogany plants have the ability to satisfactorily tolerate or postpone drought. MenosYoung mahogany (Swietenia macrophylla King) plants were grown under either well-watered (pre-dawn leaf water potential, ?pd, ca. ?0.40 MPa) or drought (?pd, ca. ?3.52 MPa) conditions to examine some physiological strategies that allow the maintenance of leaf turgor. In well-watered plants, stomatal conductance (gs) was nearly constant (440 mmol m?2 s?1) between 7:00 and 13:00 h. This was accomplished by significant increases in transpiration (E) and apparent total hydraulic conductance (KT), in which averages were higher at 13:00 h. From 13:00 to 17:00 h, gs, E, and KT decreased sharply, reaching their lower values at 17:00 h. In these plants, significant increases in height (116%), stem diameter (50%) and leaf area (200%) were registered over the experimental period (20 days). Analyses of linear regression between gs or E and leaf-to-air vapor pressure deficit (?w) were not significant. In water-stressed plants, gs and E were higher at 7:00 h and lower from 9:00 to 17:00 h, while KT was higher in early morning (7:00 h) and in late afternoon (17:00 h) than between 9:00 and 15:00 h. Moreover, both gs and E decreased potentially (P < 0.001) with the diurnal increases on ?w. Drought also decreased leaf and leaflet numbers and reduced total leaf area, but had no effect on stem height and diameter. Leaf proline was higher (ca. 400%, between 13:00 and 15:00 h) in water-stressed plants, suggesting osmotic adjustment under drought. Twelve hours after resumption of irrigation, ?pd wa... Mostrar Tudo |
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Palavras-Chave: |
Transpiração. |
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Thesagro: |
Água; Mogno. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02506naa a2200229 a 4500
001 1658411
005 2022-11-16
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1016/j.foreco.2009.06.054$2DOI
100 1 $aCORDEIRO, Y. E. M.
245 $aPhysiological and morphological responses of young mahogany (Swietenia macrophylla King) plants to drought.$h[electronic resource]
260 $c2009
520 $aYoung mahogany (Swietenia macrophylla King) plants were grown under either well-watered (pre-dawn leaf water potential, ?pd, ca. ?0.40 MPa) or drought (?pd, ca. ?3.52 MPa) conditions to examine some physiological strategies that allow the maintenance of leaf turgor. In well-watered plants, stomatal conductance (gs) was nearly constant (440 mmol m?2 s?1) between 7:00 and 13:00 h. This was accomplished by significant increases in transpiration (E) and apparent total hydraulic conductance (KT), in which averages were higher at 13:00 h. From 13:00 to 17:00 h, gs, E, and KT decreased sharply, reaching their lower values at 17:00 h. In these plants, significant increases in height (116%), stem diameter (50%) and leaf area (200%) were registered over the experimental period (20 days). Analyses of linear regression between gs or E and leaf-to-air vapor pressure deficit (?w) were not significant. In water-stressed plants, gs and E were higher at 7:00 h and lower from 9:00 to 17:00 h, while KT was higher in early morning (7:00 h) and in late afternoon (17:00 h) than between 9:00 and 15:00 h. Moreover, both gs and E decreased potentially (P < 0.001) with the diurnal increases on ?w. Drought also decreased leaf and leaflet numbers and reduced total leaf area, but had no effect on stem height and diameter. Leaf proline was higher (ca. 400%, between 13:00 and 15:00 h) in water-stressed plants, suggesting osmotic adjustment under drought. Twelve hours after resumption of irrigation, ?pd was similar (P > 0.05) between well-watered and drought-stressed plants, suggesting an ability of plants to recover turgor after stress cessation. Altogether, our data support the hypothesis that young mahogany plants have the ability to satisfactorily tolerate or postpone drought.
650 $aÁgua
650 $aMogno
653 $aTranspiração
700 1 $aPINHEIRO, H. A.
700 1 $aSANTOS FILHO, B. G. dos
700 1 $aCORREA, S. S.
700 1 $aSILVA, J. R. R. e
700 1 $aDIAS-FILHO, M. B.
773 $tForest Ecology and Management$gv. 258, n. 7, p. 1449-1455, Sep. 2009.
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Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 170 | |
| 5. |  | TOLENTINO, R. F.; EUCLIDES, V. P. B.; MONTAGNER, D. B. Estrutura do dossel de capim-mombaça sob pastejo intermitente. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 10., 2014, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2014. p. 86-87. 2 p. (Embrapa Gado de Corte. Documentos, 208). Comissão organizadora: Grácia Maria Soares Rosinha, Alexandra Rocha de Oliveir, Rodrigo Carvalho Alva.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 9. | | ECHEVERRIA, J. R.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; ANTUNES, L. E.; NANTES, N. N. Densidade populacional de perfilhos de Híbrido H331 submetido a intensidades e frequências de desfolhação. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 9., 2013, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2013. (Embrapa Gado de Corte. Documentos, 204). Comissão organizadora: Denise Baptaglin Montagner, Grácia Maria Soares Rosinha, Rodrigo Carvalho Alva| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 10. | | ALMEIDA, A. F.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; NANTES, N. N.; ZIMMER, K. A. Densidade populacional de perfilhos em pastos de capim-piatã sob lotação contínua. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 7., 2011, CAMPO GRANDE, MS. [Anais da]... Campo Grande, MS: Embrapa Gado de Corte, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 11. | | GOIS, P. O. de; EUCLIDES, V. P. B.; MONTAGNER, D. B.; NANTES, N. N. Densidade populacional de perfilhos, taxa de acúmulo de forragem e desempenho animal em pasto do capim - piatã sob lotação contínua. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE, 6., 2010, Campo Grande, MS. Ética na pesquisa científica: [Anais da ...]. Campo Grande, MS: Embrapa Gado de Corte, 2010. 1 CD-ROM. Coordenadora: Vanessa Felipe de Souza 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 12. | | EUCLIDES, V. P. B.; MONTAGNER, D. B.; ARAUJO, A. R. de; BARBOSA, R. A. Cultivares de Panicum maximum para produção de ruminantes. In: SIMPÓSIO SOBRE MANEJO ESTRATÉGICO DA PASTAGEM, 6.; SIMPÓSIO INTERNACIONAL SOBRE PRODUÇÃO ANIMAL EM PASTEJO, 4., 2012, Viçosa, MG. Anais do... Viçosa, MG: UFV, 2012. p. 129 - 151, VI SIMFOR. 22 p. VI. SIMFOR| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 15. | | MARTINS, C. D. M.; EUCLIDES, V. P. B.; BARBOSA, R. A.; MONTAGNER, D. B.; MIQUELOTO, T. Consumo de forragem e desempenho animal em cultivares de Urochloa humidicola sob lotação contínua. Pesquisa Agropecuária Brasileira, Brasília, DF, v.48, n.10, p.1402-1409, outubro, 2013| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Corte; Embrapa Unidades Centrais. |
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| 16. | | EUCLIDES, V. P. B.; COSTA, F. P.; EUCLIDES FILHO, K.; MONTAGNER, D. B.; FIGUEIREDO, G. R. Biological and economic performance of animal genetic groups under different diets. Bioscince Journal, Uberlândia, v. 34, n. 6, p. 1683-1692, Nov./Dec. 2018 Título em português: Desempenho biológico e econômico de grupos genéticos animais sob diferentes dietas.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 17. | | EUCLIDES, V. P. B.; MONTAGNER, D. B.; BARBOSA, R. A.; NANTES, N. N. Manejo do pastejo de cultivares de Brachiaria brizantha (Hochst) Stapf e de Panicum maximum Jacq. Revista Ceres, Viçosa, v. 61, Supl., p. 808-818, nov/dez, 2014 Título em inglês: Pasture and grazing management of Brachiaria brizantha (Hochst) Stapf and Panicum maximum Jacq.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 18. | | SILVA, P. M. P.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; NANTES, N. N. Morfogênese, acúmulo de forragem e comportamento ingestivo de bovinos em pasto de capim-piatã submetidos a intensidades de pastejo em lotação contínua. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 7., 2011, CAMPO GRANDE, MS. [Anais da]... Campo Grande, MS: Embrapa Gado de Corte, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 170 | |
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