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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Semiárido. |
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Data corrente: |
20/02/2005 |
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Data da última atualização: |
10/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LIMA FILHO, J. M. P. |
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Afiliação: |
JOSÉ MOACIR PINHEIRO LIMA FILHO, CPATSA. |
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Título: |
Gas exchange of the umbu tree under semi-arid conditions. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Revista Brasileira de Fruticultura, Jaboticabal, v. 26, n. 2, p. 206-208, ago. 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
A study was carried out at Embrapa Semi-Árido, Petrolina-PE, Brazil, aiming to understand the gas exchange process of the umbu tree (Spondias tuberosa Arr. Cam) in the dry and rainy seasons. Stomatal conductance, transpiration, photosynthesis and internal CO2 concentration were obtained with a portable infrared gas analyzer (IRGA). During the dry season the umbu tree showed a much lower stomatal conductance early in the morning, as soon as the vapor pressure deficit increased, apparently affecting CO2 assimilation more than transpiration. The highest values were detected around 6: 00 am but decreased to the lowest points between 10:00 am and 2:00 pm. During the raing season, however, stomatal conductance, transpiration and photosynhesis were significantly higher, reaching the highest values between 8:00 and 10:00 am and the lowest around 2:00 pm. It was also observed at 4:00 pm, mainly during the rainy season, an increase on these variables indicating that the umbu tree exhibits a two-picked daily course of gas exchange. |
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Palavras-Chave: |
CO2; Concentração interna de CO2; Condutividade estomática; internal concentration; Transpiração; Umbuzeiro. |
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Thesagro: |
Fotossíntese; Spondias Tuberosa; Umbu. |
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Thesaurus Nal: |
photosynthesis; stomatal conductance; transpiration. |
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Categoria do assunto: |
--
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/37296/1/Moacir.pdf
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Marc: |
LEADER 01796naa a2200265 a 4500
001 1155268
005 2022-06-10
008 2004 bl uuuu u00u1 u #d
100 1 $aLIMA FILHO, J. M. P.
245 $aGas exchange of the umbu tree under semi-arid conditions.
260 $c2004
520 $aA study was carried out at Embrapa Semi-Árido, Petrolina-PE, Brazil, aiming to understand the gas exchange process of the umbu tree (Spondias tuberosa Arr. Cam) in the dry and rainy seasons. Stomatal conductance, transpiration, photosynthesis and internal CO2 concentration were obtained with a portable infrared gas analyzer (IRGA). During the dry season the umbu tree showed a much lower stomatal conductance early in the morning, as soon as the vapor pressure deficit increased, apparently affecting CO2 assimilation more than transpiration. The highest values were detected around 6: 00 am but decreased to the lowest points between 10:00 am and 2:00 pm. During the raing season, however, stomatal conductance, transpiration and photosynhesis were significantly higher, reaching the highest values between 8:00 and 10:00 am and the lowest around 2:00 pm. It was also observed at 4:00 pm, mainly during the rainy season, an increase on these variables indicating that the umbu tree exhibits a two-picked daily course of gas exchange.
650 $aphotosynthesis
650 $astomatal conductance
650 $atranspiration
650 $aFotossíntese
650 $aSpondias Tuberosa
650 $aUmbu
653 $aCO2
653 $aConcentração interna de CO2
653 $aCondutividade estomática
653 $ainternal concentration
653 $aTranspiração
653 $aUmbuzeiro
773 $tRevista Brasileira de Fruticultura, Jaboticabal$gv. 26, n. 2, p. 206-208, ago. 2004.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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