Abstract
The objective of this study was to determine the best rootstock that enhances the enological characteristics of the Vermentino grape variety cultivated in the high-altitude region of Santa Catarina, Brazil, over three vintages (2018, 2019, and 2020). Four rootstocks were evaluated: '101-14 Mgt', 'Harmony', 'Paulsen 1103', and 'VR 043-43'. The physicochemical and sensory properties of the wines were assessed. The findings revealed that the rootstocks '101-14 Mgt', 'Harmony', 'Paulsen 1103', and 'VR 043-43' produced wines with the lowest total acidity in the 2019 vintage. The alcohol content was notably lower in wines produced with 'VR 043-43' in 2021. Sensory analysis indicated that wines made with the '101-14 Mgt' and 'Harmony' rootstocks in the 2019 vintage exhibited higher turbidity. The herbaceous character was most pronounced in the 2019 vintage, with a stronger herbaceous aroma regardless of the rootstock used. Acidity levels were highest in the wines from the 2021 vintage, particularly in those made with the 'Harmony' and 'VR043-43' rootstocks.
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