Determination of Rooting and Vine Sapling Rates of Single-Bud Cuttings Prepared from Vitis labrusca L. Grape Cultivars

Abstract

In this study, rooting rate, root number, root length, root scale, basal callus ratio, and converting to sapling properties of single bud cuttings belonging to Vitis labrusca species were investigated. Single-bud cuttings were prepared from basal to upper nodes from annual shoots containing 10 buds in March, 2021. The cuttings of 'Concord', 'Rizellim', 'ulkemiz', 'celiksu', and 'Rizessi' cultivars were rooted in the climate room. According to node numbers, the average highest rooting rate was obtained at the 3rd node with 90.3%. On the other hand, the lowest rooting rate (68.0%), root length (1.86 cm), and basal callus rate (23.1%) were found at the 10th node. In the study, the highest root number was found at the 3rd and 4th nodes (2.9 and 3.1). The highest basal callus formation values were found in the 1st and 2nd nodes (56.9% and 61.8%). The highest average rooting rate (91.4%) and root length (3.0 cm) were obtained in the 'celiksu' cultivar, whereas the highest root numbers (2.94) and root scale values (2.15) were determined in the 'Rizellim' cultivar. The average rooting rate (62.0%), root number (1.60), root length (1.35 cm), root scale (0.88), and vine sapling rate (63.3%) were the lowest in the 'ulkemiz' cultivar. The rate of converting into saplings of cuttings in the cultivars ranged between 83.0% and 89.8%. In the study, the lowest rate of the single-bud cuttings converting to vine saplings was in the 'ulkemiz' variety (63.3%). The obtained values are evaluated by the weighted-ranking method. According to the weighted-ranking method, the best cultivars were selected as 'Rizessi' and 'celiksu' in terms of rooting and converting to vine saplings ratios. In the research, the 4th node of the cuttings was determined as the most suitable for production.