Micropropagation of Morus laevigata Wall. from mature trees.

Multiple shoots were obtained from nodal explants of 10-year-old tree of Morus laevigata on Murashige and Skoog's medium supplemented with different concentrations (0.5-5.0 mg.l(-1)) of benzyladenine (BA). Nodal segments taken from in vitro proliferated shoots gave further multiple shoots when cultured on the same basal medium containing 2.5 mg.l(-1) BA. Repeated subculture resulted in rapid shoot multiplication at the average rate of 6-fold per subculture. In vitro raised shoots rooted on MS medium containing 0.1 mg. l(-1) each of 3-indolebutyric acid (ISA) and α-naphthaleneacetic acid (NAA). The regenerated plantlets were successfully established in soil under field conditions after a few days of indoor acclimatization.