Stem Water Potential is a Sensitive Indicator of Grapevine Water Status

Stem Water Potential is a Sensitive Indicator of Grapevine Water Status

Dawn leaf water potential (dawnΨ), leaf water potential (leafΨ) and stem water potential (stemΨ) were measured on mature leaves to determine non-irrigated vine water status in vineyards during the growing season. StemΨ was the most discriminating indicator for both moderate and severe water deficits...

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Veröffentlicht in:Annals of botany 2001-04, Vol.87 (4), p.477-483
Hauptverfasser: Choné, Xavier, Van Leeuwen, Cornelis, Dubourdieu, Denis, Gaudillère, Jean Pierre
Format: Artikel
Sprache:eng
Schlagworte:
Botanics
Hydraulic conductivity
leaf water potential
Leaves
Life Sciences
Plant available water
Plants
root zone
Soil depth
Soil water
Soil water content
Soil water deficit
stem water potential
Transpiration
transpiration flow
Vegetal Biology
vine
Vineyards
Water status
Water status, vine, root zone, stem water potential, leaf water potential, transpiration flow, hydraulic conductivity
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Beschreibung
Zusammenfassung:Dawn leaf water potential (dawnΨ), leaf water potential (leafΨ) and stem water potential (stemΨ) were measured on mature leaves to determine non-irrigated vine water status in vineyards during the growing season. StemΨ was the most discriminating indicator for both moderate and severe water deficits. The difference between stemΨ and leafΨ (ΔΨ) provided an indirect measurement of mean leaf transpiration which varied with soil moisture conditions and vapour pressure deficit in the atmosphere. The use of stemΨ as an indicator for grapevine management in both non-irrigated and irrigated vineyards is discussed.
ISSN:0305-7364
1095-8290
DOI:10.1006/anbo.2000.1361