Abstract
The purpose of this research was to appreciate the impact of the synthetic cytokinin, well known as thidiazuron (TDZ) on seedless berry quality of cv. ‘Recel Uzümü’. Three concentration levels including 0, 5 and 10 mg/L were applied on the grapevines during different phenological stages of grapevine such as Time 1: beginning of berry stetting, Time 2: berries pepper corn size and Time 3: berries pea size. While TDZ application times had no impacts on cultivar characteristics, it was determined that the application doses of TDZ had major impacts on yield and quality components of cv. ‘Recel Uzümü’.
Consequently, ascending TDZ doses increased berry and cluster size and led to decreases in total soluble solids content, total phenolic compound content, total anthocyanin content and p-value of grape juice regardless of TDZ application time. The most effective TDZ dose was 10 ppm for improving berry and cluster size in cv. ‘Recel Uzümü’.
Zusammenfassung
Ziel dieser Untersuchung war es, den Einfluss des synthetischen Cytokinins, das unter dem Namen Thidiazuron (TDZ) bekannt ist, auf die Qualität der Beeren der kernlosen Sorte ‘Recel Uzümü’ zu messen. Die Weinreben wurden, zu verschiedenen phänologischen Stadien, mit 3 Konzentrationen (0, 5 und 10 mg/l) behandelt. Der erste Termin war zu Beginn der Beerenentwicklung, der zweite Termin bei Pfefferkorngröße der Beeren und der 3. Termin bei Erbsengröße der Beeren. Während die TDZ-Anwendungstermine keinen Einfluss auf die Pflanzen zeigten, hatten die TDZ-Konzentrationen großen Einfluss auf Ertrag und Qualitätsmerkmale der Sorte ‘Recel Uzümü’.
Demzufolge verbesserten ansteigende TDZ-Konzentrationen die Beeren- und die Traubengröße und führten zum Absinken der löslichen Trockensubstanz, des Gesamt-Phenolgehaltes, des Gesamt-Anthocyangehaltes und des p-Wertes beim Traubensaft, unabhängig vom Zeitpunkt der TDZ-Anwendung. Die wirkungsvollste Dosierung von TDZ, um die Beeren- und Traubengröße der Sorte ‘Recel Uzümü’ zu verbessern, waren 10 mg/l.
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Kok, D., Bal, E. Seedless Berry Growth and Bioactive Compounds of cv. ‘Recel Uzümü’ (V. Vinifera L.) as Affected by Application Doses and Times of Pre-Harvest Thidiazuron. Erwerbs-Obstbau 58, 253–258 (2016). https://doi.org/10.1007/s10341-016-0286-6
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DOI: https://doi.org/10.1007/s10341-016-0286-6