Vine description, berry chemical characteristics and phenolic compounds of newly registered foxy grape (Vitis labrusca L.) cultivars in Turkey
This study was conducted between 2014 and 2016 in order to determine the phenological, morphological and berry characteristics of five Turkish foxy grape (Vitis labrusca L.) cultivars (Rizessi, Rizpem, Rizellim, Ulkemiz, and Çeliksu) newly registered. Bunch weight, berry weight, TSS, titratable acidity and total phenolic compounds of berry samples were determined. Berry samples were collected from 10-year-old grapevines at large unripe, veraison, 50% coloring, harvest time, and over-ripe period. Ampelographic description followed OIV norms. Ulkemiz had a wide-open shoot tip and others had it fully open. Ulkemiz had green young leaf with anthocyanin color while Rizpem had light copper-red ones and other cultivars have yellow green. All cultivars had fully developed sexual organs, small bunch size and medium bunch shape. It was observed that the weight of berry at harvest time ranged between 3.20 g (Rizpem) and 3.93 g (Çeliksu). Berry weight and TSS continue to increase to the over ripe period. Berry skin color of Rizpem was dark red-violet and others were blue-black. The berry flesh of each cultivar was colorless and contained several seeds. Total phenolic compounds decreased during the maturation. Rizpem gave the highest total phenolics (4116.53 mg kg‑1) at harvest time while it had the 7666.33 mg kg‑1 total phenolics at large unripe period.
Çelik, H., Köse, B. and Ateş, S. (2020). Vine description, berry chemical characteristics and phenolic compounds of newly registered foxy grape (Vitis labrusca L.) cultivars in Turkey. Acta Hortic. 1276, 23-30
foxy grape, Vitis labrusca L., ampelography, TSS, acidity, phenolics