Terroir 2008 banner
IVES 9 IVES Conference Series 9 Variability in intrinsic water use efficiency (WUEi) of eight red varieties grown in the center of the Iberian Peninsula during an atypical vintage year

Variability in intrinsic water use efficiency (WUEi) of eight red varieties grown in the center of the Iberian Peninsula during an atypical vintage year

Abstract

The study was performed in the summer of 2007, the point of confluence of a rather atypical vintage year in the area with abnormally low temperatures after a very humid spring. The experiment was carried out in a fully productive vineyard with espalier cultivation and different varieties in one of the largest terroirs of La Mancha (region in the center of Spain). Eight red varieties, i.e., five traditional varieties of the region (Tempranillo, Garnacha Tinta, Bobal, Tinto Velasco and Moravia Agria) and three international varieties (Merlot, Syrah and Cabernet Sauvignon), were studied.
Daily monitoring of the gas exchange was performed with a portable infrared gas exchange system at different development stages (closure of the bunches, veraison and maturity). The recorded measurements allowed to determine, for each studied variety, the values of net photosynthesis (AN), stomatal conductance (gs) and transpiration (E) as well as to calculate intrinsic water use efficiency (WUEi).
The results showed significant differences between varieties as far as the gas exchange parameters are concerned. Bobal, Moravia Agria and Cabernet Sauvignon showed rather high assimilation rates (AN) during the day, usually above the rest. In turn, the WUEi proved that the Garnacha Tinta and Tempranillo varieties belong to the most efficient group under moderate water stress conditions.

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type: Article

Authors

Jesús MARTÍNEZ GASCUEÑA and Juan Luis CHACÓN VOZMEDIANO

Instituto de la Vid y del Vino de Castilla-La Mancha (IVICAM).
Ctra. de Albacete, s/n. 13700 Tomelloso (Ciudad Real), Spain

Contact the author

Keywords

varieties, intrinsic water use efficiency, photosynthesis, Vitis vinífera

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

A NEW SPECIFIC LINEAGE OF OENOCOCCUS OENI IN COGNAC APPELLATION WINES

Oenococcus oeni is the main lactic acid bacteria (LAB) species which conducts the malolactic fermentation (MLF) in wine. During MLF, O. oeni converts malic acid into lactic acid, which modulates wine aroma composition leading to better balanced organoleptic properties. O. oeni is a highly specialized species only detected in environments containing alcohol such as wine, cider or kombucha. Genome analysis of more than 240 strains showed that they form at least 4 main phylogenetic lineages and several sublineages, which are associated with different beverages or types of wines.

Studio per la caratterizzazione delle produzioni vitivinicole dell’area del Barbera d’Asti DOC

Il Barbera rappresenta sicuramente uno dei più importanti vitigni autoctoni del Piemonte occu­pando circa il 50% della superficie vitata regionale. Esso è ancora diffuso su un’area molto vasta, che si estende per oltre 200.000 ha, dando origine a diverse produzioni vinicole tutelate da denominazioni d’origine.

Potential deacidifying role of a commercial chitosan: impact on pH, titratable acidity, and organic acids in model solutions and white wine

Chitin is the main structural component of a large number of organisms (i.e., mollusks, insects, crustaceans, fungi, algae), and marine invertebrates including crabs and shrimps.

Distinctive flavour or taint? The case of smoky characters in wine

Forest fires in the vicinity of vineyards have significantly increased in the last decade and are a concern for grapegrowers and winemakers in many wine producing countries. The fires cause smoke drift throughout vineyards which cannot be avoided and may result in the production of wines described as ‘smoke tainted’. Such wines are characterized by undesirable sensory characters described as ‘smoky’, ‘burnt’, ‘ash’ aromas and flavours, and also may cause a lingering, unpleasant ashy aftertaste [1; 2].

The Wine Active Compounds (WAC) conference 2022

The 5th edition of the International Conference Series on Wine Active Compounds (WAC) will be held from 29 June to 1 July 2022 (Dijon, France). All authors with accepted abstracts will have the possibility to publish either a short 4-pages article or a...