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…

Novel and low-cost approach to estimate light radiation inside a canopy

The impact of different canopy systems and viticultural management practices on fruit exposure have been widely investigated, and the potential impact of microclimate on fruit composition is well recognised.

Read More

Valutazione comparativa di cloni di Pinot nero per la produzione di vini base spumante in alcuni ambienti del Piemonte

Un vasto programma si riferisce alla verifica di 28 selezioni clonali di Pinot nero atte a vini base spumante. Gli impianti sono stati realizzati in diversi ambienti delle Langhe e del Monferrato nel periodo 1992-1996, in 57 vigneti diversi e su una superficie complessiva di circa 50 Ha.

Read More

Influence of soil physicochemistry and rhizosphere microbial communities on Pinot noir grape composition in two biodynamic vineyards

Soil properties and rhizosphere microbial communities are increasingly recognised as critical determinants of grapevine performance and fruit composition, yet their combined influence remains underexplored in cool-climate viticulture.

Read More

Preliminary characterisation of mannoproteins from different wine yeast strains and impact on wine properties

Mannoproteins (MPs) are released from the yeast cell wall during alcoholic fermentation and aging on the lees, and influence aspects of wine quality such as haze formation and colour stability. Yet, as this is a slow process with microbiological and sensory risks, the exogenous addition of extracted MPs poses an efficient alternative. While Saccharomyces cerevisiae has long been studied as a prominent source for MPs extraction, their structure and composition greatly differ between yeast species. This may influence their behaviour in the wine matrix and subsequent impact on wine properties. However, although wine yeast species other than S. cerevisiae possibly present an untapped source of MPs, they are still ill-characterised in terms of chemical composition and influence on wine.

Read More

OENOLOGICAL STRATEGIES FOR THE REMOVAL OF PINKING IN WHITE WINE

The pinking of in white wine is the turning of color from yellow to salmon hue. White wines obtained from certain grape varieties (e.g. Chardonnay, Sauvignon blanc, Riesling, Trebbiano di Lugana) showed to be susceptible to pinking [1] that has been evaluated by an assay providing the addition of hydrogen peroxide. Even if its appearance does not seem to affect the sensory properties [2], strategies are necessary for its removal. Nowadays, the treatment with polyvinylpolipirroline (PVPP) was reported to significantly decrease the pink color [3].

Read More