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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 : 123 | |
| 3. |  | TORGA, P. P.; RANGEL, P. H. N.; ABREU, A. G. de; COSTA, J. G. C. da. Comparação entre métodos de germinação em acessos de feijão-comum. Revista RG News, v. 4, n. 3, p. 402, 2018. Edição especial dos Anais do 5º Congresso Brasileiro de Recursos Genéticos, Fortaleza, nov. 2018.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 9. | | MACIEL, D. O.; SOUZA, L. F.; VIANELLO, R. P.; TORGA, P. P.; ROCHA, M. R. Fenotipagem de acessos de feijão comum quanto à resistência a Meloidogyne incognita. In: CONGRESSO BRASILEIRO DE NEMATOLOGIA, 39.; ANNUAL MEETING OF ONTA, 54., 2024, Foz do Iguaçu. Anais... Foz do Iguaçu: Universidade Estadual de Maringá: Sociedade Brasileira de Nematologia, 2024. p. 61.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 13. | | TORGA, P. P.; SANTOS, J. B. dos; PEREIRA, H. S.; FERREIRA, D. F.; LEITE, M. E. Seleção de famílias de feijoeiro baseada na produtividade, no tipo de grãos e informações de QTLs. Ciência e Agrotecnologia, v. 34, n. 1, p. 95-100, jan./fev. 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 15. | | TEIXEIRA, W. G.; PEREIRA, H. S.; BASSINELLO, P. Z.; TORGA, P. P.; MELO, L. C. Tempo de cocção em genótipos de feijoeiro comum com grãos preto em diferentes ambientes. In: SEMINÁRIO JOVENS TALENTOS, 4., 2010, Santo Antônio de Goiás. Resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2010. p. 38. (Embrapa Arroz e Feijão. Documentos, 257).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 16. | | TORGA, P. P.; COLOMBARI FILHO, J. M.; MORAIS, O. P. de; CORDEIRO, A. C. C.; CASTRO, A. P. de. Avaliação de famílias de arroz da Embrapa no ciclo 2013/14. 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.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 18. | | SILVA, C. L. F. da; VALDISSER, P. A. M. R.; TORGA, P. P.; BRONDANI, C.; GRATTAPAGLIA, D.; VIANELLO, R. P. Genômica aplicada à conservação e utilização dos recursos genéticos do feijão-comum. In: SEMINÁRIO JOVENS TALENTOS, 17., 2023, Santo Antônio de Goiás. Seu futuro inspira a nossa ciência: resumos. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2024. p. 18. (Embrapa Arroz e Feijão. Eventos técnicos & científicos, 1).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Recursos Genéticos e Biotecnologia. |
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| 20. | | GUIMARÃES, N. C. C.; TORGA, P. P.; RESENDE, E. C.; CHALFUN JUNIOR, A.; PAIVA, E.; PAIVA, L. V. Identificação de variantes somaclonais em bananeiras 'Prata Anã', utilizando técnicas moleculares e citogenéticas. Ciência e Agrotecnologia, Lavras, v. 33, n. 2, p. 448-454, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 123 | |
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