GRAFTING TO IMPROVE THE CHARACTERISTICS OF SAPLING OF GRAPEVINE CULTIVARS

Through this paper we convey the conducted researches with simultaneous callusing and rooting through grapevine grafting in cultivars as Shesh i bardhë, Shesh i zi, Tajga, Victoria and Cardinal. 20 cm long antiphyloxeric grafts in 1103 P, treated with paraffin wax, installed in 500 cc (coconut) substrate in a bench. Temperature of degrees 26. Afterwards, grafts treated in the basal part for 7 seconds with NAA-1 2g.1^-1. The callosity formation in the scion wound and at the base have been significantly affected by applied hormone (P 0001). In cv. Shesh i bardhë it has been observed the best regeneration of callus (98%) and significant changes (1:47 LSD. P = 0.05). 2g/1^-1 NAA concentration has had a clear improved callus induction, an augmented 27 % radices’ stimulation, which was higher than that of the Control. Meanwhile, this concentration has favored the merismatic activity and the proliferation of vegetative buds. Cultivar has had strong correlative links with the callusing percentage (r = 0734), the rooting percentage of (r = 0567), and a weak link with the number of roots (r = -0237). The obtained results represent an interesting source for the growth of reproduction coefficient and time reduction of sapling preparation.