GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 Enological characterization of mold resistant varieties grown in the Trentino Alpine Region

Enological characterization of mold resistant varieties grown in the Trentino Alpine Region

Abstract

Among the different strategies used in vine growing to fight against mold diseases, it can be pointed out the hybridation of traditional grape varieties with others, presenting a genetic resistance to pathogen attack. The research in this field has been encouraged in recent years due to the increased concern about human safety and environmental pollution linked to the use of agrochemicals. This approach allows to limit the number of treatments and the type of active compounds used in vine management. The environment determines the pressure degree of the diseases on vines and the biologic response of the plant to their attack. Thus, to better evaluate the tolerance to pathogens, cultivars are usually tested in different vinegrowing areas and the main winemaking parameters – such as reducing sugars, organic acids or pH – are evaluated. However, the plant environment also affects greatly the production of secondary metabolites, some of which play an active role in wine quality, determining the enological aptitude of these varieties in each production area. Information regarding the composition of these compounds is scarce and should be related to the production area and the viticultural and agronomic features.

Material and methods – Grapes used for the winemaking investigations were produced between 2015 and 2017 in two experimental plots of Trentino (NE Italy) geographically and environmentally differentiated.

Results – In this work, we report some of the results obtained in the VEVIR project, which regards the evaluation and the enological valorization of grapes produced in the Trentino vinegrowing region from some mold resistant varieties breeded at the Weinbauinstitute from Freiburg (Germany). To this aim, musts, wines and distillates obtained with standardized conditions at semi-industrial scale were used for the chemical investigations. The project focused partially on the study of the phenolic and the color profile of wines obtained from red varieties, the shikimic acid concentration from white cultivars or the aroma of the wines and the distillates analyzed chemically and sensorially. We have also deepen on the effect of the winemaking protocol on the concentration of some of these parameters in wines.

Download the PDF

DOI:

Publication date: September 28, 2023

Issue: GiESCO 2019

Type: Poster

Authors

Tomas ROMAN*, Sergio MOSER, Laura BARP, Maurizio BOTTURA, Loris TONIDANDEL, Mario MALACARNE, Roberto LARCHER and Giorgio NICOLINI

Center for Technology Transfer – Fondazione Edmund Mach, San Michele all’Adige (TN), Italy

Contact the author

Keywords

mold, tollerant, resistant, winemaking, aroma, secondary metabolites

Tags

GiESCO | GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Effect of “Terroir” on quanti-qualitative paramethers of “vino nobile di Montepulciano”

In this last ten years period, there has been many integrated and interdisciplinary studies to determine the aptitude of different zones to viticulture (Lulli et al., 1989 ; Costantini, 1992 ; Fregoni et al., 1992). The researches needed some différent knowledges about environment characteristics (soil, climate), ecology, vineyard management, vine genetic, winemaking and sensory analysis. The interaction of all these knowledge produced the assessment about the environmental vocation (Scienza et al., 1992). By means of this metodology, the “viticultural vocation” joined the word “zoning”, that is the territory parting for its ecopedological and geographical characteristics in relation to adaptative answer of winegrape (Morlat, 1989).

Read More

New methods and technologies to describe the environment in terroir studies

The concept of terroir in viticulture deals with the influence of environmental factors on vine behaviour and grape ripening. Recent advances in technology, in particular computer technology, allow a more in-depth study of the environment. Geomorphology can be studied with digital Elevation Models (DEM). Soils can be surveyed with geophysics.

Read More

Infrared spectroscopy investigation of fresh grapevine organs for clustering and classification.

The spectral information acquired from fresh whole grapevine organs have yet to be fully explored. Infrared spectroscopy provides the means to rapidly measure fresh plant material and providing extensive information on the physical and chemical structure of samples.

Read More

Relationship between terroir and acidity for the red wine grape cultivar Malbec N or Cot N (Vitis vinifera L.) in AOC “Cahors” and “Côtes du Frontonnais “

L’étude préliminaire, réalisée sur les principaux cépages de la région Midi-Pyrénées, a montré que le Cot N possédait des teneurs en acide tartrique dans les moûts et les vins plus élevées que celles des cépages Négrette N, Tannat N, Duras N et Fer Servadou N.

Read More

Characterization of bunch compactness and identification of associated genes in a diverse collection of cultivars of Vitis vinifera L.

Compactness is a complex trait of V. vinifera L. and is defined ultimately by the portion of free space within the bunch which is not occupied by the berries. A high degree of compactness results in poor ventilation and consequently a higher susceptibility to fungal diseases, diminishing the quality of the fruit. The easiness to conceptualize the trait and its importance arguably contrasts with the difficulty to measure and quantify it. However, recent technical advancements have allowed to study this attribute more accurately over the last decade. Our main objective was to explore the underlying genetics determining bunch compactness by applying updated phenotyping methods in a collection of V. vinifera L. cultivars with a wide genetic diversity.

Read More