Original research articles

Effects of ripening conditions on the following season's growth and yield components for Pinot noir and Gewurztraminer grapevines (Vitis vinifera L.) in a controlled environment

Abstract

Two levels of leaf/area ratio were created for two varieties of grapevine (Vitis vinifera L.) in a glasshouse. Carbohydrate and free amino acids concentrations in the pruning wood were significantly reduced when the leaf/fruit ratio was low. In the following season, growth parameters were affected as well as yield components such as the number of shoots per plant, the number of inflorescences per shoot, the number of flowers per inflorescence and the number of berries per cluster. Fruit set was however not altered. Weight of grapes at fruit set was reduced by 68% for Gewurztraminer and by 46 % for Pinot noir.

Authors


Eric Duchêne

duchene@colmar.inra.fr

Affiliation : UMR 1131 Santé de la Vigne et Qualité du Vin, INRA, Université de Strasbourg, F-68000 Colmar, France


Nathalie Jaegli

Affiliation : Institut National de la Recherche Agronomique, Unité Mixte de Recherche Vigne et Vins d'Alsace, 28, rue de Herrlisheim, B.P. 507, 68021 Colmar, France


R. Salber

Affiliation : Institut National de la Recherche Agronomique, Unité Mixte de Recherche Vigne et Vins d'Alsace, 28, rue de Herrlisheim, B.P. 507, 68021 Colmar, France


Jean-Pierre Gaudillère

Affiliation : INRA, ISVV, UMR 1287, F-33140 Villenave d’Ornon, France

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