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IVES 9 IVES Conference Series 9 Merano Wine Festival 2020

Merano Wine Festival 2020

IVES was a partner of the Merano Wine Festival (innovation section), a digital event held from 6 to 10 November 2020. During this festival participants attended scientific conferences on cutting-edge topics for the wine industry. Some of the topics covered have been selected from our journals: IVES Technical Reviews and OENO One. You can enjoy the recordings on Merano Wine Festival web platform. Discover below webinars and topics covered selected from our journals



How can the water regime and nitrogen status of the vine influence aging aromas in red wines?

By Nicolas Le Menn (University of Bordeaux) Read the original article on IVES Technical Reviews



New microbiological stabilization procedures: an alternative to reduce SO2 levels in wine? (Video in Italian)

By Maria Tiziana Lisanti (Università degli Studi di Napoli Federico II) › Read the original article on IVES Technical Reviews



Does water deficit negatively impact wine grape yield over the long term? 

By Alexander D. Levin (Oregon State University) Read the original article on IVES Technical Reviews



Berry primary and secondary metabolites in response to sunlight and temperature in the grapevine fruit zone.

By Alain Deloire (Montpellier University, L’Institut Agro SupAgro-IHEV, France) › Read the original article on IVES Technical Reviews



Sensory characterisation of Bordeaux red wines produced without added sulfites.

By Edouard Pelonnier-Magimel (Unité de Recherche Œnologie, Inrae, Université de Bordeaux, Bordeaux INP, France) Read the original article on OENO One

Publication date: January 14, 2021

Issue: Merano Wine Festival 2020

Speakers

Nicolas Le Menn, Maria Tiziana Lisanti, Alexander D. Levin, Alain Deloire, Pelonnier-Magimel

Tags

IVES Conference Series | Merano Wine Festival

Citation

Related articles…

The rootstock, the neglected player in the scion transpiration even during the night

Water is the main limiting factor for yield in viticulture. Improving drought adaptation in viticulture will be an increasingly important issue under climate change. Genetic variability of water deficit responses in grapevine partly results from the rootstocks, making them an attractive and relevant mean to achieve adaptation without changing the scion genotype. The objective of this work was to characterize the rootstock effect on the diurnal regulation of scion transpiration. A large panel of 55 commercial genotypes were grafted onto Cabernet Sauvignon. Three biological repetitions per genotype were analyzed. Potted plants were phenotyped on a greenhouse balance platform capable of assessing real-time water use and maintaining a targeted water deficit intensity. After a 10 days well-watered baseline period, an increasing water deficit was applied for 10 days, followed by a stable water deficit stress for 7 days. Pruning weight, root and aerial dry weight and transpiration were recorded and the experiment was repeated during two years. Transpiration efficiency (ratio between aerial biomass and transpiration) was calculated and δ13C was measured in leaves for the baseline and stable water deficit periods. A large genetic variability was observed within the panel. The rootstock had a significant impact on nocturnal transpiration which was also strongly and positively correlated with maximum daytime transpiration. The correlations with growth and water use efficiency related traits will be discussed. Transpiration data were also related with VPD and soil water content demonstrating the influence of environmental conditions on transpiration. These results highlighted the role of the rootstock in modulating water deficit responses and give insights for rootstock breeding programs aimed at identifying drought tolerant rootstocks. It was also helpful to better define the mechanisms on which the drought tolerance in grapevine rootstocks is based on.

Sensory evaluation of the effect of anthocyanins on in-mouth perceptions

In this audio recording of the IVES science meeting 2022, Maria Paissoni (Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Alba, Italy) speaks about sensory evaluation of the effect of anthocyanins on in-mouth perceptions. This presentation is based on an original article accessible for free on OENO One.

Fertility assessment in Vitis vinifera L., cv. Alvarinho

The Portuguese wine production is characterized by wide yield fluctuations, causing considerable implications in the economic performance of this sector. The possibility of predicting the yield in advance is crucial as it enables preliminary planning and management of the available resources. The present work aims to study and evaluate two different techniques for the assessment of vine fertility. vineyards.

HYDROXYTYROSOL PRODUCTION BY DIFFERENT YEAST STRAINS: SACCHAROMYCES AND NON-SACCHAROMYCES AND THE RELATION WITH THE NITROGEN CONSUMPTION

Hydroxytyrosol (HT) is a phenolic compound with extensive bioactive properties. It is present in olives, olive oil and wines. Its occurrence in wines is partly due to yeast synthetise tyrosol from tyrosine by the Ehrlich pathway, which is subsequently hydroxylated to .
The aim of the present work is to study how different yeast strains can influence in the HT production and, how the different nitrogen consumption of each strain can interfere the production of bioactive compounds.

Valpolicella chemical pattern of aroma ‘terroir’ evolution during aging

Valpolicella is an Italian region famous for the production of high quality red wines. Wines produced in its different sub-regions are believed to be aromatically different, as confirmed by recent studies in our laboratory. Aging is a very common practice in Valpolicella and it is required by the appellation regulation for periods up to four years. The aim of this study was to investigate the evolution, during aging, of volatile chemical composition of Valpolicella wines obtained from grapes harvested in different sub-regions during different vintages.