The effect of american grapevine rootstock on the chemical quality parameters of ‘Banazı Karası' [Amerikan asma anaçlarının ‘banazı karası' üzüm çeşidinde bazı kimyasal kalite özellikleri üzerine etkisi]

Abstract

This research was conducted on the grape variety “Banazı Karası" in a grower vineyard located in Konak-Yeşilyurt of Malatya. It has been investigated the effect of the production, made with the ungrafted (cutting) and 41B, 1103P, and 110R rootstocks in the growth of ‘Banazı Karası', on some fruit quality characteristies in the study. Five years old and over forty-year-old vinestocks have been used in the ungrafted vinestocks. The pH values ranged from 4.03 to 4.56, the SCKM from 22.50 to 27.00%, the maturity index of 48.91 to 68.97, the drying efficiency of 29.33 to 32.70 and the titration acidity of 0.36 to 0.47% in”Banazı Karası" grown by being grafted on the rootstocks and by being ungrafted (without rootstock). Rootstock of 99R gave the highest must yield value with 83%. The L* value, representing the skin brightness, varied between 25.34 and 23.74 (41B-1103P), the a* value, showing red and green varied between 0.47 and 1.84 (41B-110R), and the b* value, indicating blue and yellow varied, between -1.32 and -1.91 (1103P-41B). While there have been numerical differences among the rootstocks in the b* value, the ungrafted vines have been monitored to have b*values close to each other (-1.72 and -1.71). The b* value (-1.82) obtained from the 99R tootstock was the closent value to those of the ungragted vines. The effect of the rootstocks on some of the chemical quality parameters in the grape fruits has been found statistically significant. © 2017, Centenary University. All rights reserved.