Abstract
National wine strategy of Hungary promotes the use of “flexible” grape cultivars. These enable producers’ best fit to wine market changes and expectations. This study is aimed to present data on the gene bank of the University of Debrecen, Hungary. Data were collected at a single site, between 2010 and 2018 in east Hungary lowland on acidic sandy soil, own rooted planting material. Our results showed that besides high yield and adequate cane production desired sugar content at convenient pH is to be awaited with moderate deviation between vintages. Presented concept demonstrate technological flexibility of cultivars by their average deviation from regression equation between increasing sugar and pH typical for the vintage composed of data of cultivars of the gene bank. Average positive deviation means higher sugar content at specific pH, thus higher sugar content at desired, conveniently low pH (3.0-3.2 pH).
Highlights
National wine strategy points out quality wine production
Sugar content and acidity at harvest is presented according to the introduced concept
It is clear to comprehend that besides adequate yield and cane production, better technological flexibility of the variety could be detected in phenomena, when increasing sugar content meats lower level of acidic breakdown (Table 1)
Summary
National wine strategy points out quality wine production. This is the strength of Hungarian wine production sector. Mass production is not an option in international market concern. Another aim of the strategy to focus on “flexible” cultivars. This means that a circle of cultivars could be defined technologically flexible rendering possibilities for growers and wine makers to better fit to wine-market (for example: ‘Kékfrankos’, ‘Rizling’, ‘Furmint’). Possibilities could be backed by data on biological productivity potential of the cultivars. This paper is to disseminate data of the variety collection of University of Debrecen from this perspective
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