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Mapping Grapevine (Vitis vinifera L.) Water Status during the Season Using Carbon Isotope Ratio (δ13C) as Ancillary Data

Ana Herrero-Langreo, Bruno Tisseyre, Jean-Pascal Goutouly, Thibaut Scholasch, Cornelis van Leeuwen
Am J Enol Vitic. September 2013 64: 307-315; published ahead of print June 03, 2013 ; DOI: 10.5344/ajev.2013.12125
Ana Herrero-Langreo
1Fruition Sciences SAS, Cap Omega, Rond point Benjamin Franklin CS 39521, 34960 Montpellier, France
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Bruno Tisseyre
2UMR ITAP, Montpellier SupAgro/IRSTEA, 2 place Viala, 34060 Montpellier, France
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Jean-Pascal Goutouly
3INRA, ISVV, Ecophysiology and Functional Genomics of Grapevine, UMR 1287, 33140 Villenave d’Ornon, France
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Thibaut Scholasch
1Fruition Sciences SAS, Cap Omega, Rond point Benjamin Franklin CS 39521, 34960 Montpellier, France
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  • For correspondence: thibaut@fruitionsciences.com
Cornelis van Leeuwen
4University of Bordeaux, Bordeaux Sciences Agro, ISVV, Ecophysiology and Functional Genomics of Grapevine, UMR 1287, 33140 Villenave d’Ornon, France.
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Abstract

Vine water status is a major parameter for vine management because it affects both wine quality and yield. In order to optimize vineyard management and harvesting practices, it is necessary to characterize vineyard water status spatial variability. This work aims at establishing an empirical spatial model for stem water potential (ΨStem) with ancillary data based on vine water status. Carbon isotope ratio (δ13C) measured at harvest was selected as ancillary data because it reflects only the effect of vine water status variations integrated over the season and is not impacted by other factors such as vine nitrogen status. The proposed model was applied at the intrablock level. It is based on the spatial extrapolation of a ΨStem value measured at a reference site using δ13C values collected over the block. Measurements of ΨStem and δ13C were carried out over three consecutive years on 96 locations within the block. ΨStem values obtained with a spatial model were more accurate than ΨStem values obtained with a nonspatial model, indicating the relevancy of δ13C values to account for spatial variability of vine water status. Results show that operational maps of vine water status can be obtained by means of a spatial model, in which δ13C values from a previous season are used as ancillary data. Maps can be updated at any given time during the season by carrying out a limited number of ΨStem measurements in selected locations. This model offers a tool to monitor vine water status and to implement management practices while considering vine water status intrablock variability.

  • vine water status
  • spatial model
  • δ13C
  • stem water potential
  • ©2013 by the American Society for Enology and Viticulture
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Vol 64 Issue 3

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Mapping Grapevine (Vitis vinifera L.) Water Status during the Season Using Carbon Isotope Ratio (δ13C) as Ancillary Data
Ana Herrero-Langreo, Bruno Tisseyre, Jean-Pascal Goutouly, Thibaut Scholasch, Cornelis van Leeuwen
Am J Enol Vitic.  September 2013  64: 307-315;  published ahead of print June 03, 2013 ; DOI: 10.5344/ajev.2013.12125

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Mapping Grapevine (Vitis vinifera L.) Water Status during the Season Using Carbon Isotope Ratio (δ13C) as Ancillary Data
Ana Herrero-Langreo, Bruno Tisseyre, Jean-Pascal Goutouly, Thibaut Scholasch, Cornelis van Leeuwen
Am J Enol Vitic.  September 2013  64: 307-315;  published ahead of print June 03, 2013 ; DOI: 10.5344/ajev.2013.12125
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