Original research articles

Leaf water potential meaning of different modalities of measurements

Abstract

An experiment on Syrah in the Ecotron design of the AGRO Montpellier/INRA campus vineyard, with the control of different water regimes, allowed to test the physiological meaning and the field of application of different modalities of leaf water potential measurements : predawn and daily potential for leaves in a normal micro-environment (which keep all of their interest and generality), « stem » potential (which must be called differently and reserved to particular conditions) for shadow enveloped leaves. Field observations on Syrah and Merlot confirm the interest of some methods.

Authors


Alain Carbonneau

Affiliation : Viticulture-OEnologie, Agro de Montpellier, 2 place Viala, Montpellier, France

carbonne@ensam.inra.fr

Alain Deloire

Affiliation : Stellenbosch University, Department of Viticulture and Oenology, Private Bag X1, Matieland 7602, South Africa; NWGIC, Charles Sturt University, Boorooma Street, Wagga Wagga, NSW, Australia, 2650


Pietro Costanza

Affiliation : AGRO Montpellier, Chaire de Viticulture et d’OEnologie, UMR « Sciences pour l’OEnologie et la Viticulture », 2 place Pierre Viala, 34060 Montpellier cedex1, France; Università degli studi di Palermo, Facoltà di Agraria, Dipartimento di Colture Arboree Viale delle Scienze, 90128 Palermo, Italie

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