Terroir 2008 banner
IVES 9 IVES Conference Series 9 «Observatoire Mourvèdre»: statistical modelling of quality for Cv. Mourvèdre

«Observatoire Mourvèdre»: statistical modelling of quality for Cv. Mourvèdre

Abstract

Vine cultivar Mourvèdre is present all around the Mediterranean area and is interesting for its tannins and the specificity of its aromas. It is though difficult to manage. A wide project started in 1999 in order to determine what conditions are mostly important on the quality of the grapes and wines of Mourvèdre. During 5 years and on 32 different plots from Roussillon region up north towards Ardèche and east towards Var vineyards, a large amount of climatic, phenological, water stress, plant and grape data has been collected. Data mining PLS Spline method was used to model different variables of quality like sugar content in musts. The model obtained, that is able to predict the potential of a parcel, pointed out the major importance of the climate, as long as the yield and the leaf canopy management. It has then been validated on 4 different zones for the year 2005.

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

CLAVERIE M. (1), DURAND J.F. (2)

(1) Institut Français de la Vigne et du Vin (ENTAV-ITV France), Station régionale Rhône-Méditerranée, Domaine de Donadille, Rodilhan, France
(2) Laboratoire de Probabilités et Statistiques, Université de Montpellier II, Montpellier, France

Contact the author

Keywords

vine, Mourvèdre cultivar, model, maturity, sugar content

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Kinetic investigations of the sulfite addition on flavanols

Sulfonated monomeric and dimeric flavan-3-ols are recently discovered in wine and proved to have great importance in understanding wine chemistry and quality [1, 2].

Obtaining new varieties derived from Monastrell for the preparation of low alcoholic wines

The main challenge faced by viticulture is to improve the quality of the wines, adapting them to the new consumer demands that demand wines with lower alcohol content and greater freshness. In the last 30 years, a clear modification has been observed in the composition of the grape due to climate change

An overview of the impact of clone, environmental factors and viticultural techniques on rotundone concentration in red wines

Rotundone is the main aroma compound responsible for peppery notes in red wine. This positive and very potent molecule has an odor threshold of 8 ng/L in water and 16 ng/L in red wine. It has been detected in several grape varieties with some of the highest concentrations recorded in Syrah, Duras, Tardif and Noiret, an interspecific hybrid grown in the North-East of the USA. If several winemaking practices have been identified to lower rotundone in wine, up to date, no enological solution has proved its efficiency to maximize it. This means that efforts to produce high rotundone wines must be undertaken in vineyards. This work provides practical ways that can be used by winegrowers to modulate rotundone levels in their wines.

When organic chemistry contributes to the understanding of metabolism mechanisms

Many compounds of interest in wine are difficult to analyze since they are present in very small quantities or they are unstable. The need for reliable data led scientists to develop complex method in order to overcome the analytical difficulties and provide accurate quantitative data for grape or wine characterization.

INTEGRAPE guidelines and tools: an effort of COST Action CA17111

INTEGRAPE was a European interdisciplinary network for “data integration to maximize the power of omics for grapevine improvement” (CA17111, https://integrape.eu/), funded by the European COST Association from September 2018 to 2022. This Action successfully developed guidelines and tools for data management and promoted the best practices in grapevine omics studies with a holistic future vision of: “Imagine having all data on grapevine accessible in a single place”.