Direct shoot regeneration from leaf explants of Digitalis lamarckii, an endemic medicinal species

Th is study reports, for the fi rst time, an effi cient in vitro plant regeneration protocol for Digitalis lamarckii Ivan. (dwarf foxglove) via direct shoot organogenesis. Two sets of experiments were carried out; the fi rst compared diff erent concentrations of 6-benzylaminopurine (BAP), kinetin, thidiazuron (TDZ), and zeatin alone using leaf explants excised from in vitro germinated seedlings, while the second set tested the combinations of indole-3-butyric acid (IBA) with BAP, kinetin, TDZ, and zeatin for shoot multiplication from the leaf explants, which were already cultured and developed numerous shoots during the fi rst set of experiments. For shoot regeneration (the fi rst set of experiments), TDZ was the most eff ective at 1.0 mg L -1