VEGETATIVE PROPAGATION AND INITIAL GROWTH PERFORMANCE OF Streblus asper LOUR. – A TROPICAL MEDICINAL TREE

Abstract

Vegetative propagation of Streblus asper, an important medicinal plant, was studied for efficient rooting using different concentrations of auxins and non auxinic Boric acid. Semi hard wood cuttings of 0.9 -1.2 cm diameter from mature plants were collected and treated for 24 hours in liquid formulations of 10 ppm, 50 ppm, 100 ppm and 200 ppm concentrations of IBA, IAA, NAA and 50 ppm, 150 ppm, 250 ppm and 350 ppm of Boric acid individually and in combination. Results of the study revealed significant effect (p<0.05) of IBA and B combination on rooting and survival percentage and found that 10 ppm and 50 ppm IBA with 250 ppm of Boric acid induced highest root number and length and significant steckling capacity with high number of shoots than the other treatments and control. The study explores the scope of clonal propagation of S. asper by mature stem cuttings thus providing material for conservation of a selected clone.

An Efficient Propagation Approach to Forcing Softwood Shoots from Epicormic Buds and Subsequent Rooting of Paulownia elongata S. Y. Hu

“…Different combinations of IBA, IAA, and NAA have also been reported to be superior for the rooting of stem cuttings of Ginkgo [ 42 , 47 ]. As the activation of polysaccharide hydrolysis is affected by auxins to release physiologically active sugars and, therefore, energy for root induction-related meristematic activity [ 48 ], the combined effect of IBA and NAA as reported in this study might have triggered better polysaccharide hydrolysis, resulting in an efficient rooting in Paulownia .…”