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Viniculture in colder countries requires the use of rootstocks adapted to the climatic and soil conditions, which influence the essential characteristics of the vine yield in terms of the physiological and morphological features. The current study was carried out in 2015–2018 in southern Poland to examine the impact of the ‘5BB’, ‘125AA’, ‘101-14M’, ‘SO4’ and ‘Börner’ rootstocks on the growth, yield and fruit quality of three grape varieties: ‘Seyval Blanc’, ‘Johanniter’ and ‘Solaris’. The following biometric parameters were compared: the increment in the trunk cross-sectional area, number of inflorescences on the vine, total yield, mean weight of a cluster and chemical parameters, such as the total soluble solid (TSS) content and grape titratable acidity (TA). The cluster weight of the individual varieties was also assessed in eight categories by weight (0–700 g). The results showed that ‘Solaris‘ and ‘Johanniter’ grafted onto ‘Börner’ and ‘Seyval Blanc’ onto ‘5BB’ had significantly increased trunk diameters. For the ‘Solaris‘ cultivar, the ‘Börner’ rootstock increased the TSS volume by 8.2%. In the ‘Seyval Blanc’ cultivar, ‘125AA’ and ‘Börner’ reduced the TSS content and increased the content of TA in the berries. In the ‘Johanniter’ cultivar, the ‘Börner’ rootstock led to an increase in the TSS content with a concomitant increase in the TA.

The effect of rootstocks on the growth, yield and fruit quality of hybrid grape varieties in cold climate condition