optimization of in vitro microtuberization of potato (solanum tuberosum l. cv. agria) using paclobutrazole and uniconazol

in order to investigate the characteristics of in vitro microtuberization of potato cv. agria in response to the two triazole anti-gibberellin, paclobutrazole and uniconazol, two independent experiment in five concentrations (0, 0.08, 0.16, 0.32, 0.64 mg/l) of each compound were carried out with four replications for each treatment in a completely randomized design. in this experiment percent of microtuberization, length and diameter of microtubers, fresh weight of microtubers and shoots, length of developed vegetative buds on microtubers, length of internodes, number of nodes and leaves were recorded. percent of microtuberization, length and diameter of microtubers and fresh weight of microtubers were increased with increasing of triazole concentration. length of internodes and length of developed vegetative buds on microtubers were reduced by increasing of triazole concentration. number of nodes and leaves were increased with increasing the concentration of anti-gibberellin. for indicators of microtuberization, treated plants with paclobutrazole and uniconazol had better performance than control plants. it could be indicated the efficacy of these materials on microtuberization. according to our results, it seems that these chemicals could be effective for improving characteristics of in vitro microtuberization in potato cv. agria.