Abstract
Cluster thinning was performed on vines of the Syrah variety eight days before the véraison (CTBV) and after the completion of the véraison (CTAV) in the 2019 and 2021 vegetation periods. The differences in physiological and chemical properties between the grapes were investigated to which cluster thinning was applied at two different times and those without cluster thinning. According to the research results, CTBV was more effective in the berry fresh weight, dry weight, berry volume, skin weight, skin surface, cluster width, cluster length, cluster weight, and cluster volume parameters than CTAV. Likewise, the levels of total phenolic compounds, total anthocyanins, and antioxidant capacity increased by 9%, 27%, and 30%, respectively, compared to the control group without cluster thinning. Among the phenolic compounds, trans-resveratrol showed the highest increase of 38%, and petunidin-3-glucoside increased the most (12%) among anthocyanins.
Publisher
Uniwersytet Przyrodniczy w Lublinie
Subject
Horticulture,Plant Science
Reference41 articles.
1. The Ferric Reducing Ability of Plasma (FRAP) as a Measure of “Antioxidant Power”: The FRAP Assay
2. The effects of early leaf removal and cluster thinning treatments on berry growth and grape composition in cultivars Vranac and Cabernet Sauvignon
3. Phenolic profiles and anti-inflammatory activities of sixteen table grape (Vitis vinifera L.) varieties
4. Effects of cluster thinning on wine quality of Syrah cultivar (Vitis vinifera L.)
5. Cravero, M.C., Bonello, F., Tsolakis, C., Piano, E., Borsa, D. (2012). Comparison between Nero d’Avola wines produced with grapes grown in Sicily and Tuscany. Ital. J. Food Sci., 24(4), 384–387.