Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
07/10/1999 |
Data da última atualização: |
07/10/1999 |
Autoria: |
TARDIEU, F.; SIMONNEAU, T. |
Afiliação: |
INRA, Laboratoire d'Ecophysiologie des Plants sous Stress Environnementaux (LEPSE), F-34060 Montpellier cedex 1, France. |
Título: |
Variability among species of stomatal control under luctuating soil water status and evaporative demand: modelling isohydric and anisohydric behaviours |
Ano de publicação: |
1998 |
Fonte/Imprenta: |
Journal of Experimental Botany, v.49, p.419-432, 1998 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
ABA; Field; Genetic variability; Maize; Poplar; Sunflower; Vapour pressure deficit; Water deficit; Water transport. |
Thesaurus Nal: |
stomata. |
Categoria do assunto: |
-- |
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) |