reported low shoots induction in the presence of 2ip, while the highest regeneration frequency was induced with TDZ Some authors Mertens et al. [5]; Hsia and Korban [8]: Vejsadova and Pretova [20] reported TDz to be an essential growth regulator for the shoots induction of leaf explants our results indicate specificity of Rhododendron cultivars to cytokinin 2ip.