evaluation of media elements and materials on petiole somatic embryogenesis of carrot (daucus carota l.)

somatic embryogenesis is a new approache to plant mass in vitro propagation. this method influences by elements and their components in medium. in order to investigate the effects of different media and it,s role on somatic embryogenesis of carrot, a cbd experiment with four replications (including 12 treatments) was conducted. to do this, carrot petioles (with 1 cm dimension) in induction phase were cultured in three different media including ms, b5 and nl. after three weeks, induced organs were transported to realization phase and embryo counting was begun six weeks after realization phase during different embryogenesis stages. results indicated that studied media had significant differences in respect to somatic embryogenesis (p