Optimization of Callus Culture of Satureja Bachtiarica L. using Different Explants and Concentrations of Growth Regulators

Satureja bachtiarica L, an important medicinal plant from Lamiaceae family is valuable because of its medical compounds. Optimization of in vitro culture through callogenesis is proposed to be an alternative for vegetative propagation. In present study, an efficient protocol has been developed for callus induction of S. bachtiarica using different explants and concentrations of plant growth regulators on MS basal medium. Results indicated that the highest rate of callogenesis (16.82±0.94 days after culture) and callus volume (14.17±0.47) were achieved from internodes explants. On the other hand, for percentage of callus induction, shoot tips, internodes and nodal segments explants were more efficient than that of leaves explants. According to the results, the nodal segments cultured on medium supplemented with 1 mgl-1 BAP plus 1 mgl-1 NAA led to a remarkable decrease in induction rate of calli. Maximum callus volume was obtained from internodes explants cultured on medium supplemented with 0.5 mgl-1 BAP plus 0.5 mgl-1 NAA.