VEGETATIVE PROPAGATION OF ULMUS LAEVIGATA BY STEM CUTTINGS

Abstract

Cuttings taken from one-year-old branches of 25- year-old trees were tested under nursery conditions to evaluate the effect of auxin, season and cutting portion on the rooting potential of Ulmus laevigata. Maximum rooting (63.3%) was recorded when cuttings prepared from basal portions were treated with 1.5% IBA formulation during winter (February). In the rainy season best rooting was achieved when cuttings from basal portions were treated with 0.5 % NAA + 1.0 % IBA. In rooting characteristics (except mean root length), basal portions in winter and the rainy season were quite effective in enhancing the root quality.