terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Quantifying water use diversity across grapevine rootstock-scion combinations

Quantifying water use diversity across grapevine rootstock-scion combinations

Abstract

Vines require proper light levels, temperature, and water availability, and climate change is modifying these factors, hampering yield and quality. Despite the large diversity of rootstocks, varieties, and clones, we still lack knowledge of their combined effects and potential role in a warmer and dryer future. Therefore, we aim to characterize some of the existing diversity of rootstocks and genotypes and their interaction at the eco-physiological level, combining stomatal conductance (gs) and chlorophyll a fluorescence analysis. The measurements were performed at the GreffAdapt experimental vineyard of ISVV in the following variety-rootstock combinations: Grenache, Syrah and Cabernet-Sauvignon cv. grafted onto the rootstocks 110R, 1103P, M4, SO4, 5BB, and 140Ru. Preliminary results show a significant effect of the rootstock, particularly on stomatal conductance and to a lesser extent on the quantum yield of photosystem II (ᶲPSII). Some rootstocks appear to result in much lower levels of gs and quantum yield of photosystem II (ᶲPSII), suggesting a higher sensitivity to water stress and/or a water use strategy to balance water status at the expense of photochemistry energy utilization. These results will be integrated with vigor and yield parameters to achieve a comprehensive insight of rootstock-genotypes response under applied contexts. Furthermore, these data highlight the importance of exploring the plasticity of existing rootstock-scions combinations and ultimately providing winegrowers with the knowledge and tools to adapt their vineyards to future environmental constraints.

Acknowledgements: This work was supported by the Sustainable Crop Production (FACCEJPI) -ERA-NET Cofund Action (Ref. Nr 59 – DIVERGRAPE) under H2020 Horizon Europe programme.

DOI:

Publication date: October 11, 2023

Issue: ICGWS 2023

Type: Poster

Authors

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

1EGFV – ISVV, INRAE, 210 Chemin De Leysotte, 33882 Villenave D’Ornon, France

Contact the author*

Keywords

chlorophyll fluorescence, grapevine, stomatal conductance, stress response

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Reduction of the height of the canopy in fruit set and in pea size: vegetative, productive and maturation effects, in cv. Verdejo

Global warming is accelerating the technological ripening of the grape, with a loss of acidity, which requires that vineyard management can delay ripening to avoid it. The source-sink relation is essential for grape ripening, since it affects the distribution of photosynthates and substances derived from plant metabolism. A work is proposed to know the response of the vineyard to the drastic reduction of the foliar surface by trim down the shoots in cv.

Read More

Control of bacterial growth in carbonic maceration winemaking through yeast inoculation

Controlling the development of the bacterial population during the winemaking process is essential for obtaining correct wines[1]. Carbonic Maceration (CM) wines are recognised as high-quality young wines. However, due to its particularities, CM winemaking implies a higher risk of bacterial growth: lower SO2 levels, enrichment of the must in nutrients, oxygen trapped between the clusters… Therefore, wines produced by CM have slightly higher volatile acidity values than those produced by the destemming/crushing method[2].

Read More

Design of microbial consortia to improve the production of aromatic amino acid derived compounds during wine fermentation

Wine contains secondary metabolites derived from aromatic amino acids (AADC), which can determine quality, stability and bioactivity. Several yeast species, as well as some lactic acid bacteria (LAB), can contribute in the production of these aromatic compounds. Winemaking should be studied as a series of microbial interactions, that work as an interconnected network, and can determine the metabolic and analytical profiles of wine. The aim of this work was to select microorganisms (yeast and LAB) based on their potential to produce AADC compounds, such as tyrosol and hydroxytyrosol, and design a microbial consortium that could increase the production of these AADC compounds in wines.

Read More

Possible methods of adaptation to the effects of climate change in the Tokaj Wine Region 

Viticulture’s adaptation to the harmful effects of climate change is globally the biggest challenge of the near future. Short, extremely intensive rainfalls and longer periods of drought are getting more frequent in the Tokaj Wine Region, where the majority of the vineyards are cultivated on steep slopes. Hence, erosion has high risk, especially when combined with the loess-based soils on about ten percent of the region. The environmentally beneficial cover crop and mulch usage can effectively reduce the risk of erosion, according to research done by the Tokaj Wine Region Research Institute of Viticulture and Oenology.

Read More

Effect of irrigation in cover cropping vineyards

Cover cropping in vineyard is a sustainable and alternative soil management system to conventional tillage that is gaining more and more importance among winegrowers and is being promoted, among other organizations, by the European Union through the eco-schemes of the Common Agricultural Policy.
However, the use of cover crops in Mediterranean viticultural environments is conditioned, to a large extent, by the availability of irrigation water which, in a context of global warming like the one we are experiencing, must be adjusted to savings strategies, supplying to the vine only what it needs in each moment.

Read More