terclim by ICS banner
IVES 9 IVES Conference Series 9 Open-GPB 9 Open-GPB-2024 9 Flash - Abiotic interactions 9 Rootstock-scion contributions to seasonal water and light use diversity under field conditions

Rootstock-scion contributions to seasonal water and light use diversity under field conditions

Abstract

Cultivar and rootstock selection are two well-known strategies for adapting vine production in challenging environments. Despite the vast diversity of rootstocks and cultivars, their effective contribution to grapevine sustainable development and acclimation to changing growing conditions remains an open question. The use of robust and prompt monitoring tools can allow a powerful screening of the water status of the vineyard before considering a further detailed characterization. This study leveraged new tools to monitor the stomatal conductance (gs), transpiration rate (E), and quantum efficiency of photosystem II (ᶲPSII) throughout a season, from pre-veraison to after-harvest. The resulting dataset represent one of the largest and most comprehensive rootstock gas exchange studies to date, encompassing a broad range of rootstock-scion combinations: Grenache, Syrah and Cabernet Sauvignon cv. grafted onto the rootstocks 110R, 1103P, SO4, 5BB, 140Ru, and Fercal. A total of 45 measurements, distributed by three blocks, were undertaken per combination throughout eleven dates. Overall, the results show that water use diversity is driven primarily by the cultivar and to a much lesser extent the rootstocks, whose contribution is greatly influenced by environmental parameters (e.g. VPD, light, temperature, and precipitation) and vine development. Grenache cv. showed the lowest gs values during the experiment, displaying the most conservative water use strategy. On the other hand, light stress responses were more homogeneous across rootstock-scion combinations. Finally, the contribution of most rootstock-scion combinations was revealed to be complex and to vary greatly across the season.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Sara Bernardo1*, Hannah Chepy1, Marine Morel1, Elisa Marguerit1, Gregory A. Gambetta1

1UMR EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, Institute of Vine and Wine Science/ISVV, Villenave d’Ornon, France

Contact the author*

Keywords

gas exchange, grapevine, stomatal conductance, stress responses, water status

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison. In all solutions were added 1ml/l of Tween 80 ® surfactant.

Read More

Key odorants of french syrah wines from the northern rhone valley

Little research has been undertaken to investigate the main contributors to the aroma of Syrah wines from the cool northern part of the Rhone valley despite the historical importance of this cultivar for this wine region. The aim of the present work was to study the key odorants of Crozes-Hermitage wines made

Read More

Some applications come from a method to concentrate proteins

All techniques usually used to assay proteins was not reliable in vegetable extract due to interferences with the components included in extracts like polyphenols, tanins, pectines, aromatics compounds. Absorbance at 280nm, Kjeldhal assay, Biuret and Lowry methods, Acid Bicinchonique technique and Bradford assay give the results depending on the composition of extract, on the presence or not of detergent and on the raw material (Marchal, 1995). Another difficulty in these extracts for the quantification of proteins comes from the large amount of water included in vegetable and the low concentration of proteins. Thus in red wines, proteins are usually not taken into account due to their low concentration (typically below 10 mgL-1) and to the presence of anthocyanis and polyphenols.

Read More

Changes in wine secondary metabolites composition by the timing of inoculation with lactic acid bacteria: impact on wine aroma

For the first time, it was established that the timing of inoculation with LAB could significantly impact the concentration of many secondary metabolites leading to significant aromatic changes. From studied compounds, the most influenced were esters and diacetyl.

Read More

Automated red microvinification (1kg) adapted to the needs of varietal innovation

The creation of disease-resistant varieties adapted to climate change is a key challenge for the future of the wine industry. At present, the selection of these new varieties is essentially based on screening for genetic markers of resistance and agronomic criteria, due to the small number of vines available per genotype. Integrating screening for oenological criteria into the early stages of selection would speed up this process.

Read More