Akademik Veri Yönetim Sistemi
Applied Fruit Science, cilt.67, sa.6, 2025 (SCI-Expanded, Scopus)
This study investigates the effects of artificial leaf wounding on cluster morphology, maturation, and quality of Vitis vinifera L. cultivars ‘Cabernet Sauvignon’ and ‘Merlot’ grafted onto SO4 rootstock in a vineyard in Tekirdağ, Türkiye, over two years (2021–2022). Ten wounding treatments, applied 15, 10, and 5 days before harvest, were evaluated using a Randomized Complete Block Design. Key parameters included cluster weight, width, length, gapped and non-gapped volume, berry number, yield, shoot number, total soluble solids (TSS, °Brix), pH, total acidity, phenolic compounds, anthocyanins, and tannins. Significant year effects were observed for most cluster traits, with higher values in 2021 for berry number, cluster number, weight, length, and shoot number, while 2022 showed increased cluster width and non-gapped volume. Cultivar-specific differences indicated cv.‘Cabernet Sauvignon’ generally exhibited higher cluster trait values, except for non-gapped volume. No significant treatment effects were observed on cluster morphology, likely due to vineyard homogeneity. Principal Component Analysis (PCA) highlighted that wounding timing and intensity modulated yield and ripening traits, with late-season treatments (PH1, PH5) enhancing phenolic and anthocyanin content. Hierarchical Cluster Analysis (HCA) confirmed treatment timing influenced ripening and phenolic profiles, with PH5 showing pronounced effects in cv. ‘Cabernet Sauvignon’. Late-season wounding, particularly PH1 and PH5, is recommended to enhance grape quality, depending on climatic conditions and vineyard management, offering potential for targeted viticultural strategies to optimize wine quality.