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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
26/05/2004 |
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Data da última atualização: |
13/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ANGELOCCI, L. R.; MARIN, F. R.; OLIVEIRA, R. F. DE; RIGHI, E. Z. |
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Afiliação: |
LUIZ ROBERTO ANGELOCCI, USP; FÁBIO RICARDO MARIN, CNPM; RICARDO FERRAZ DE OLIVEIRA, USP; EVANDRO ZANINI RIGHI, USP. |
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Título: |
Transpiration, leaf diffusive conductance, and atmospheric water demand relationship in an irrigated acid lime orchard. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Brazilian Journal of Plant Physiology, Campinas, v. 16, n. 1, p. 53-64, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
Leaf vapor diffusive conductance (gl) and transpiration (T) measurements in an irrigated orchard of the acid lime ?Tahiti? were carried out in a subtropical climatic condition in the State of São Paulo, Brazil. Measurements were made using steady-state null-balance porometers and were taken throughout the day, on several occasions from February to November, 1998. During September and October, measurements were performed on exposed and shaded young and fully expanded leaves, as well as on old leaves inside the tree canopy. The old leaves showed lower values of gl and T when compared to the other groups. In the other months, measurements were taken only with exposed and shaded fully expanded leaves. The highest values of gl and T were obtained from February to April. For exposed leaves gl was higher from early morning to midday, decreasing thereafter with some oscillation in the afternoon. Shaded leaves produced a pattern of increasing gl and T from 8:00-9:00 a.m. to midday, followed by a decrease when values matched those of the exposed leaves in the afternoon. In April, the first measurement in midmorning showed low gl and T values, increasing sharply in the exposed leaves until midday and then decreasing until the end of the afternoon. Between May and November, gl and T decreased sharply compared to the previous months. Boundary line and regression analysis were used to find the mathematical relationships between mean values of gl for the tree and photosynthetic photons flux density, temperature, and vapor pressure deficit of the air measured in the orchard. Based on this analysis, the reasons for the gl and T diurnal and annual variation patterns are discussed, with emphasis on the effects of atmospheric variables upon stomatal regulation. MenosLeaf vapor diffusive conductance (gl) and transpiration (T) measurements in an irrigated orchard of the acid lime ?Tahiti? were carried out in a subtropical climatic condition in the State of São Paulo, Brazil. Measurements were made using steady-state null-balance porometers and were taken throughout the day, on several occasions from February to November, 1998. During September and October, measurements were performed on exposed and shaded young and fully expanded leaves, as well as on old leaves inside the tree canopy. The old leaves showed lower values of gl and T when compared to the other groups. In the other months, measurements were taken only with exposed and shaded fully expanded leaves. The highest values of gl and T were obtained from February to April. For exposed leaves gl was higher from early morning to midday, decreasing thereafter with some oscillation in the afternoon. Shaded leaves produced a pattern of increasing gl and T from 8:00-9:00 a.m. to midday, followed by a decrease when values matched those of the exposed leaves in the afternoon. In April, the first measurement in midmorning showed low gl and T values, increasing sharply in the exposed leaves until midday and then decreasing until the end of the afternoon. Between May and November, gl and T decreased sharply compared to the previous months. Boundary line and regression analysis were used to find the mathematical relationships between mean values of gl for the tree and photosynthetic photons flu... Mostrar Tudo |
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Palavras-Chave: |
Air temperatuture; Photosynthetic photon flux density; Porometry; Vapor pressure deficit. |
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Thesaurus Nal: |
Stomata. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/120363/1/1336.pdf
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Marc: |
LEADER 02462naa a2200217 a 4500
001 1017186
005 2015-03-13
008 2004 bl uuuu u00u1 u #d
100 1 $aANGELOCCI, L. R.
245 $aTranspiration, leaf diffusive conductance, and atmospheric water demand relationship in an irrigated acid lime orchard.
260 $c2004
520 $aLeaf vapor diffusive conductance (gl) and transpiration (T) measurements in an irrigated orchard of the acid lime ?Tahiti? were carried out in a subtropical climatic condition in the State of São Paulo, Brazil. Measurements were made using steady-state null-balance porometers and were taken throughout the day, on several occasions from February to November, 1998. During September and October, measurements were performed on exposed and shaded young and fully expanded leaves, as well as on old leaves inside the tree canopy. The old leaves showed lower values of gl and T when compared to the other groups. In the other months, measurements were taken only with exposed and shaded fully expanded leaves. The highest values of gl and T were obtained from February to April. For exposed leaves gl was higher from early morning to midday, decreasing thereafter with some oscillation in the afternoon. Shaded leaves produced a pattern of increasing gl and T from 8:00-9:00 a.m. to midday, followed by a decrease when values matched those of the exposed leaves in the afternoon. In April, the first measurement in midmorning showed low gl and T values, increasing sharply in the exposed leaves until midday and then decreasing until the end of the afternoon. Between May and November, gl and T decreased sharply compared to the previous months. Boundary line and regression analysis were used to find the mathematical relationships between mean values of gl for the tree and photosynthetic photons flux density, temperature, and vapor pressure deficit of the air measured in the orchard. Based on this analysis, the reasons for the gl and T diurnal and annual variation patterns are discussed, with emphasis on the effects of atmospheric variables upon stomatal regulation.
650 $aStomata
653 $aAir temperatuture
653 $aPhotosynthetic photon flux density
653 $aPorometry
653 $aVapor pressure deficit
700 1 $aMARIN, F. R.
700 1 $aOLIVEIRA, R. F. DE
700 1 $aRIGHI, E. Z.
773 $tBrazilian Journal of Plant Physiology, Campinas$gv. 16, n. 1, p. 53-64, 2004.
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Registro original: |
Embrapa Territorial (CNPM) |
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| Registros recuperados : 8 | |
| 4. |  | MEDEIROS, R. D.; SUHRE, E.; CORDEIRO, A. C. C.; SCHWENGBER, D. R. Comportamento de linhagens de arroz irrigado sob inundação contínua e intermitente em várzea de Roraima. In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA, 38., 2009, Juazeiro, Petrolina. Planejamento da bacia hidrográfica e o desenvolvimento da agricultura: anais. Juazeiro, Petrolina: UNIVASF: Embrapa Semi-Árido: CEFET: SBEA, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Roraima. |
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| 5. | | MEDEIROS, R. D.; SUHRE, E.; CORDEIRO, A. C. C.; SCHWENGBER, D. R. Produtividade de grãos de cultivares de arroz irrigadas em Roraima sob diferentes manejos de água. In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA, 38., 2009, Juazeiro, Petrolina. Planejamento da bacia hidrográfica e o desenvolvimento da agricultura: anais. Juazeiro, Petrolina: UNIVASF: Embrapa Semi-Árido: CEFET: SBEA, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Roraima. |
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| 6. | | CORDEIRO, A. C. C.; SUHRE, E.; MEDEIROS, R. D. de; VILARINHO, A. A. Sistemas de cultivo e manejo de água na produção de diferentes genótipos de arroz em várzea, no estado de Roraima. Pesquisa Agropecuária Trop., Goiânia, v. 40, n. 3, p. 362-369, jul./set. 2010| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Roraima. |
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| 7. | | SANTOS, A. C. dos; SOARES, C. O.; SOUZA, T. W. de; GATTO, L.; SUHRE, E.; BISCOLA, P. H. N. Protejá: Programa Proteção da Informação da Embrapa Gado de Corte. In: SIMPÓSIO SOBRE INOVAÇÃO E CRIATIVIDADE CIENTÍFICA NA EMBRAPA, 2., 2010, Brasília, DF. Anais... Brasília, DF: Embrapa, 2010. Disponível em: . Acesso em: 25 fev. 2010. 1 p. Poster 009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 8. | | FORSTHOFER, E. L.; SILVA, P. R. F. da; STRIEDER, M. L.; MINETTO, T.; RAMBO, L.; ARGENTA, G.; SANGOI, L.; SUHRE, E.; SILVA, A. A. da. Desempenho agronômico e econômico do milho em diferentes níveis de manejo e épocas de semeadura. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 3, p. 399-407, mar. 2006 Título em inglês: Agronomic yield and economic performance of maize in different management levels and sowing times.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 8 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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