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…

“Terroir” and “Great” zonation study regarding Istrian Malvasia, Porec Rosy Muscat and Momjan White Muscat (HR)

In a so called “Great” zonation, “terroir” study is of great importance also in aim of the best exploiting. In the present paper are shown results from the research in Istria with the aim of individuating the influence of soil

Where the sky is no limit — The transformation of wine marketing through text-to-video generation AI model

The introduction of ai-driven tools in digital content creation represents a significant shift in the landscape of marketing, particularly for industries reliant on rich visual storytelling such as the wine sector. The development of ai models like openai’s sora, runway’s gen-2 or google’s lumiere, which can generate realistic video content from textual descriptions, offers promising new avenues for enhancing brand narrative and consumer engagement. This research explores the potential of text-to-video (t2v) ai models to revolutionize wine marketing by creating dynamic, engaging content that captures the essence of vineyards and their products without the need for traditional video production processes.

A versatile genome editing platform for grapevine: improving biotic and abiotic stress resilience 

New Plant Breeding Techniques (NPBTs) have arisen with the objective of surmounting the constraints inherent in conventional breeding methodologies, thereby enhancing plant resilience against both biotic and abiotic stresses. To date the application of genome editing in grapevine is still limited by the necessity to overcome recalcitrance to produce embryogenic calli and to regenerate plants. In our studies, we developed a smart and versatile genetic transformation system carrying all the most promising features of different genome editing approaches. In specific, we joined the GRF-GIF expression to improve regeneration, the systemic movement of the editing transcripts through tRNA-like sequences (TLS) and the cisgenic-like approach to remove transgenes.

Multi-trait selection in ancient grapevine varieties

The selection of ancient grapevine varieties aims to achieve genetic gains in several important traits that can make the variety more interesting for the objectives of the producers. Traditionally, yield and quality traits of the must have been considered for selection, but many others can be taken into account. Linear mixed models are fitted to the data to predict the empirical best linear unbiased predictors (EBLUPs) of genotypic effects for each evaluated trait, which will be the basis for selection.

Three proximal sensors to estimate texture, skeleton and soil water storage in vineyards

Proximal sensors are becoming widely used in precision viticulture, due to the quick, easy and non-invasive identification of soil spatial variability. The apparent soil electrical conductivity (ECa) is the main parameter measured by sensors, which is correlated to many factors, like soil water content, salinity, clay content and mineralogy, rock fragments, bulk density, and porosity.