A SIMPLE AND EFFICIENT METHOD FOR CLONAL PROPAGATION OF CASUARINA SUMATRANA (DE VRIESE) L JOHNSON

摘要

A new and efficient method for clonal propagation of Casuarina sumatrana by rooting stem cuttings is described. High percentage (about 60-70%) of rooting was achieved with mature softwood stem cuttings. A quick-dip of 5 s in NAA (1-10 mM) solution followed by sand culture under high humidity were required for a high rate of survival and rooting of stem cuttings. A simple, closed chamber propagation system, using fluorocarbon polymer (tetrafluoroethyleneperfluoroalkyl vinyl ether) film (Neoflon PFA film), was successfully developed for the rooting of stem cuttings without mist. Rooted cuttings inoculated with Frankia were easily transplanted and established in field conditions with very low (about 3%) mortality. The significance of these findings for mass clonal propagation of C. sumatrana is discussed. [References: 14]