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This diploma thesis is addresed to the Evaluation of PIWI variety for making a white wine. The theoretical part describes phenophases of grapevines, the basic quantitative and qualitative parameters. The following part clarifies the characterization of the PIWI and describes the grape breeding in Czech republic and in abroad. The experiment was performed in location of Mendeleum in Lednice na Morave. There were observed seven interspecific and three conventional varieties of grape. In the practise part I evaluate the phenophasis and I analize a quantitative parameters such as sugar content, titrate acids, pH, tartaric acid, malic acid, assimilated nitrogen, total flavanols and antiradical activity. The all results of these analysis are elaborated and evaluated in the charts and graphs. |
