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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
07/10/1999 |
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Data da última atualização: |
07/10/1999 |
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Autoria: |
TARDIEU, F.; SIMONNEAU, T. |
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Afiliação: |
INRA, Laboratoire d'Ecophysiologie des Plants sous Stress Environnementaux (LEPSE), F-34060 Montpellier cedex 1, France. |
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Título: |
Variability among species of stomatal control under luctuating soil water status and evaporative demand: modelling isohydric and anisohydric behaviours |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Journal of Experimental Botany, v.49, p.419-432, 1998 |
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Idioma: |
Inglês |
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Conteúdo: |
Stomatal control of species with contrasting stomatal behaviours have been investigated under natural flucuations of evaporative demand and soil water status. Sunflower and barley (anisohydric behaviour) have a daytime leaf water potential which markedly decreases with evaporative demand during the day and is lower in droughted than in watered plants. In contrast, maize and poplar (isohydric behaviour) maintain a nearly constant during the day at a value which does not depend on soil water status until plants are close to death. Plants were also subjected to a range of soil water potentials under contrasting air vapour pressure deficits (VPD, from 0.5 to 3kPa) in the field, in the greenhouse or in a growth chamber. |
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Palavras-Chave: |
ABA; Field; Genetic variability; Maize; Poplar; Sunflower; Vapour pressure deficit; Water deficit; Water transport. |
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Thesaurus Nal: |
stomata. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01455naa a2200253 a 4500
001 1648318
005 1999-10-07
008 1998 bl --- 0-- u #d
100 1 $aTARDIEU, F.
245 $aVariability among species of stomatal control under luctuating soil water status and evaporative demand$bmodelling isohydric and anisohydric behaviours
260 $c1998
520 $aStomatal control of species with contrasting stomatal behaviours have been investigated under natural flucuations of evaporative demand and soil water status. Sunflower and barley (anisohydric behaviour) have a daytime leaf water potential which markedly decreases with evaporative demand during the day and is lower in droughted than in watered plants. In contrast, maize and poplar (isohydric behaviour) maintain a nearly constant during the day at a value which does not depend on soil water status until plants are close to death. Plants were also subjected to a range of soil water potentials under contrasting air vapour pressure deficits (VPD, from 0.5 to 3kPa) in the field, in the greenhouse or in a growth chamber.
650 $astomata
653 $aABA
653 $aField
653 $aGenetic variability
653 $aMaize
653 $aPoplar
653 $aSunflower
653 $aVapour pressure deficit
653 $aWater deficit
653 $aWater transport
700 1 $aSIMONNEAU, T.
773 $tJournal of Experimental Botany$gv.49, p.419-432, 1998
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
