Farklı anaçlar üzerinde Merzifon Karası (Vitis vinifera L.) üzüm çeşidinin kalluslanma performansı ve fidan gelişimi özelliklerinin belirlenmesi

ABSTRACT Grafted vines are the only option while establishing vineyards over the sites contaminated with phylloxera. Furthermore, grafted vines used to establish new vineyards should be well-developed, healthy and compatible with the scions. In this research, we aimed to find out the most suitable rootstock forMerzifon Karası using ten rootstocks (140 Ruggeri, 110 R, 99 R, 41B, 5C, 5BB, SO4, 1103 Paulsen 140 Ruggeri and Rupestris du Lot) in 2010 and 2011. The effects on the callusing performance, growth parameters and graft development characteristics were evaluated by the modified weighted-ranking method. Significant differences were obtained in terms of callus formation, rooting capacity and growth characteristics of cultivar among the rootstocks. Callus formation rate (97.7%) and callus development level (3.7) were better on 8B grafted cuttings. Rooting percentage was found the highest on 1103 Paulsen rootstock (64.8%). While the shoot length and diameter differed according to the rootstocks (P<0.01), the highest shoot length and diameter was determined on 41B grafted vines (92.3 and 9.2 cm, respectively). As a result of weighted-ranking, 1103 Paulsen rootstock got the higher scores than the other rootstocks. According to the results obtained in Samsun conditions, which may be most suitable rootstock for 'Merzifon Karası ' grape varieties were evaluated as 1103 Paulsen.