Influence of Interaction Effects of the Different Pollenizers on the Blatina Variety (Vitis vinifera L.) Grape Cluster and Seed Characteristics
Tatjana Jovanović-Cvetković; Vide Šutalo; Muhammed Kupe; Sezai Ercisli; Aleksandar Životić; Boris Pašalić
Indigenous grape varieties represent a significant potential for viticultural diversification. Due to fertilization problems, certain varieties from this group require suitable pollenizers for successful fertilization and in order to achieve high-quality grapes. The study was conducted during the years 2016 and 2017 in the vineyard in Herzegovina (southern part of Bosnia and Herzegovina). The aim of this research is to define a suitable pollenizer for the &lsquo:Blatina&rsquo: variety, which has a functionally female flower. Manual pollination was performed with five different pollenizers during the flowering period by applying pollen to the &lsquo:Blatina&rsquo: variety inflorescence during the full bloom stage in the early morning hours. Pollinated inflorescences were isolated, marked, and monitored until the end of the vegetation, while open-pollinated clusters were the control group. The most important characteristics of grape clusters and seeds were analyzed. The best results during the research were obtained by open pollination. The significant effect of the pollenizers was registered in parameters: cluster mass, mass of grape berries in the cluster, number of grape berries per cluster, and average seed mass. Varieties &lsquo:Ž:ilavka&rsquo: and &lsquo:Vranac&rsquo: had better characteristics compared to other pollenizer varieties. The results show that the Blatina variety production with a greater number of pollenizers ensures stable yields.
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