terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Water availability at budbreak time in vineyards that are deficitary irrigated during the summer: Effect on must volatile composition

Water availability at budbreak time in vineyards that are deficitary irrigated during the summer: Effect on must volatile composition

Abstract

In recent years, Mediterranean regions are being affected by marked climate changes, primarily characterized by reduced precipitation, greater concurrence of temperature extremes and drought during the growing season, and increased inter-annual variability in temperatures and rainfall. Generally, high-quality red wines need moderate water deficit. Hence, irrigation may be needed to avoid severe vine water stress occurring in some vintages and soils with low holding capacity. The aim of this work was to evaluate the effects of soil recharge irrigation in pre-sprouting and summer irrigation every week (30 % ETO) from the pea size state until the end of ripening (RP) compared to exclusively summer irrigation every week (R) in the same way that RP, on must volatile composition at harvest. The study has been carried out in 2021-2022 with four red varieties in different Spanish wine regions: Garnacha Tinta (Badajoz), Tempranillo (Valladolid), Syrah (Albacete) and Mencía (Lugo). The effects of irrigation frequency on must volatile composition have been evaluated through GC-MS.

In 2021 season, the total volatile composition (sum of free and glycosidically fractions) showed a trend to increase in R vs RP in Garnacha and Mencía cultivars due to the bound-glicosidically fraction. In contrast, Syrah cultivar showed a higher total concentration in RP than R. In 2022, a higher total concentration was observed in RP vs R for all cultivars with exception of Garnacha. These increases were motivated by bound-glicosidically fraction except to Tempranillo cultivar where the free fraction increased in RP vs R. In general, in 2022 season the soil recharge irrigation had a positive effect on musts volatile concentration. The results showed a higher effect of the variety and season than the irrigation strategy.

Acknowledgements: Project PID2019-105039RR-C4 for financing. We also thank to ICVV analytical service (Drs. Fernández, Morata and Pérez).

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Vilanova M.1,6, Costa B.S.1, Uriarte D., Moreno D., Yuste J., Martínez-Porro D., Montoro A., Torija I., Cancela J.J.5,6

1 Instituto de Ciencias de la Vid y el Vino, 26007 Logroño (Spain)
2 Centro de Investigaciones Científicas y Tecnológicas de Extremadura, 06187 Badajoz (Spain)
3 Instituto Tecnológico Agrario de Castilla y León, 47071 Valladolid (Spain)
4 Instituto Técnico Agronómico Provincial, 02007 Albacete (Spain)
5 Universidade de Santiago de Compostela – EPSE, 27002 Lugo (Spain)
6 CropQuality: Crop Stresses and Their Effects on Quality, Associate Unit USC-CSIC (ICVV)

Contact the author*

Keywords

volatiles, deficit irrigation, Vitis vinifera

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Assessing the Effectiveness of Electrodialysis in Controlling Brettanomyces Growth in Wine

Brettanomyces yeast can negatively impact the quality and stability of wines, posing a significant challenge to winemakers. [1] This study aims to develop novel management practices to limit Brettanomyces impact on wines by evaluating the effectiveness of electrodialysis (ED) technology in removing magnesium (Mg2+) from wine to prevent the development of Brettanomyces yeast. The ED technique utilizes charged membranes to extract ions from the wine, and it is considered an alternative to cold stabilization that requires less energy. [2]

Wine racking in the winery and the use of inerting gases

The O2 uptake in the different winemaking processes is generally considered to be negative for the sensory characteristics of white and rosé wines. Wine racking is a critical point of O2 uptake, as the large surface area of the wine exposed during this operation and the inability to maintain an effective inert gas blanket over it.
The objective was to study O2 uptake during the racking of a model wine without using inert gases and to compare it with the purging of the destination tank with different inert gases.

The use of δ13C as an indicator of water use efficiency for the selection of drought tolerant grapevine varieties

In the context of climate change with increasing evaporative demand, understanding the water use behavior of different grapevine cultivars is of critical importance. Carbon isotope discrimination (δ13C) measurements in wine provide a precise and integrated assessment of the water status of the vines during the sugar accumulation period in grape berries. When collected over multiple vintages on different cultivars, δ13C measurements can also provide insights into the effects of genotype on water use efficiency.

Evaluation of physiological properties of grapevine clones of ‘Tempranillo’ and ‘Graciano’ in DOCa Rioja (Spain)

In order to avoid the loss of grapevine intra-varietal diversity of DOCa Rioja grape varieties, Regional Government of La Rioja established a germplasm bank with more than 1.600 accessions, whose origin lies in the prospecting and sampling of ancient vineyards located throughout the whole region. 30 clones of Tempranillo and 13 clones of Graciano were preselected and multiplied in a new vineyard for further observations. The aim of this work is to describe the first results from the physiological characterization by an optical sensor of these preselected clones, which constitute the base of a new clonal selection that aims to increase the range of available certified clones and to improve the adaptation of these varieties to future objectives and environmental conditions.

Mycorrhizal symbiosis modulates flavonoid and amino acid profiles in grapes of Tempranillo and Cabernet Sauvignon 

Arbuscular mycorrhizal fungi (AMF) symbiosis is probably the most widespread beneficial interaction between plants and microorganisms. AMF has been widely reported to promote grapevine growth, water and nutrient uptake as well as both biotic and abiotic stress tolerance[1]. However, the impact of AMF on grape composition has been less studied. The aim of this work was to evaluate the effects of the association between two commercial grapevine cultivars (Tempranillo and Cabernet Sauvignon grafted onto 110 rootstock) and AMF on the anthocyanin, flavonol and amino acid concentrations and profiles of grapes.