LAYERING PROPAGATIONG OF Bambusa Burmanica Gamble

Abstract

This study was conducted to determine the effects of  type and concentration auxin as well as layering season on  propagation  of Bambusa burmanica Gamble. In this study, experiments were conducted to evaluate the effects of auxin type (IBA or IAA) at different concentrations (0 ppm; 1000 ppm; 1500 ppm; 2000 ppm) and different layering seasons (January - February, April - May, and July - August) to evaluate the ability the rooting of the layered branches and the growth of the layered plants. The results of study showed that branches treated with 1,500 ppm IBA was the best experiment with highest rooting rate 67.78% after 50 days, and average number root sprouted was 11,96 roots per branch, the everage of spouted root lenghth was 14.74cm, and the spouting rate was 21.11%. That were better than other experiment used other diffent concentration IBA and IAA and control experiment without use of auxin after 95 days. In addtion, the layering season from April - May period was the best layering season, with rooting rate was 65.56% after 50 days, average number of roots was 13.06 roots per branch, and root length was 15.1cm. That was better than other layering season after 95days. The results of this study provided a practical scientific basis for applying the  layering technique in propagation of Bambusa burmanica Gamble, contributing to the conservation and development of the ecologically and economically valuable indigenous genetic resource.