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Type: Journal article
Title: Spatiotemporal changes in the accumulation of sugar and potassium within individual 'Sauvignon Blanc' (Vitis vinifera L.) berries
Author: Coetzee, Z.A.
Walker, R.R.
Deloire, A.
Clarke, S.J.
Barril, C.
Rogiers, S.Y.
Citation: Vitis: journal of grapevine research, 2017; 56(4):189-195
Publisher: Julius Kühn-Institut
Issue Date: 2017
ISSN: 0042-7500
Statement of
Z. A. Coetzee, R. R. Walker, A. Deloire, S. J. Clarke, C. Barril and S. Y. Rogiers
Abstract: It has been speculated that there may be a link between the transport of sugar and potassium into grape berries during ripening as they exhibit similar accumulation patterns. It is unclear if this proposed link is apparent in individual grape berries and in the grape berry compartments. Single grape berries were therefore analysed for sugar and potassium content and concentration within the skin, seeds and the pulp from pre-véraison until harvest. Sugar and potassium had similar accumulation patterns and positive relationships were confirmed between the sugar and potassium content within individual berries and compartments. The sugar content in the grape berry, however, increased 5-fold during ripening whereas the potassium content only doubled. Both sugar and potassium increased with berry size, suggesting a ternary relationship with berry water. The high variability in sugar and potassium contents between berries however affirms plasticity in their accumulation within individual berries.
Keywords: potassium; soluble sugars; 'Sauvignon Blanc'; grape berries; berry compartments
Rights: © The author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution Share-Alike License (
DOI: 10.5073/vitis.2017.56.189-195
Appears in Collections:Agriculture, Food and Wine publications
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