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IVES 9 IVES Conference Series 9 GiESCO 9 GiESCO 2013 9 GiESCO 2013 – Session 1: Methodology and ecophysiology 9 Modelling water and sugar flux to developing berries suggests early cessation of sugar accumulation and substantial xylem backflow

Modelling water and sugar flux to developing berries suggests early cessation of sugar accumulation and substantial xylem backflow

Abstract

A model of the developing berry was constructed with data from published studies as well as 13 varieties grown in Davis, CA (USA).  The model shows that sugar accumulation is rapid after veraison, but only for 40-50 days, after which sugar accumulation ceases.  Sugar accumulation was more tightly correlated to days after anthesis (DAA) than to growing degree days (GDD).  Based on the modelled sugar flux, and a published phloem sap concentration for grapes, xylem backflow from the berry must be substantial.

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Publication date: 07/09/2026

Issue: GiESCO 2013

Type: Oral

Authors

Mark N. Krasnow1, Kenneth A. Shackel2, Mark A. Matthews3

1 Culinary Institute of America, 1946 Campus Drive, Hyde Park, NY

2 University of California, Davis, Department of Plant Sciences, 1 Shields Avenue, Davis, CA

3 University of California, Davis, Department of Viticulture and Enology, 1 Shields Avenue, Davis, CA

Keywords

berry development, ripening, modelling, sugar accumulation

Tags

GiESCO | GiESCO 2013 | IVES Conference Series

Citation

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