Evaluation of Yield and Healthiness of Twenty Table Grapevine Cultivars Grown in Central Poland

During the years 2008-2013, 20 table grape cultivars grown in Skierniewice (Central Poland) were assessed. Among the assessed cultivars, two - ‘Chasselas Blanc’ (standard) and ‘Favorit’ belonged to V. vinifera. Eighteen interspecific hybrids - ‘Aron’, ‘Esther’ (‘Eszter’), ‘Fanny’, ‘Flora’, ‘Galanth’, ‘Ganita’, ‘Garant’, ‘Katharina’, ‘Lidi’, ‘Lilla’, ‘Muscat Bleu’, ‘Nelly’, ‘Osella’, ‘Philipp’, ‘Rosetta’, ‘Rosina’, ‘Timur’ and ‘Verdelet’ were bred in various European countries. Vines, grafted on ‘Kober 5 BB’ rootstock, were planted in 2007 and annually covered for winter. Taking into account productivity, quality of fruits, susceptibility to frost damage and fungal diseases, the Swiss ‘Muscat Bleu’ and German ‘Garant’ proved most suitable for cultivation in the conditions of Central Poland. Plants of all cultivars belonging to the group of interspecific hybrids were less susceptible to infections caused by fungal pathogens than plants of V. vinifera genotypes. The assessment of frost resistance based on the observation of those parts of bushes, which were not covered, showed high diversification among the interspecific hybrids.