Tissue culture optimization for Lallementia royleana L. an important medicinal plant

This study was designed to develop an efficient protocol for Lallementia royleana in vitro culturing and to analyze the effect of various hormones on its culturing ability. The indirect organogenesis and its callogenetic ability were evaluated; with the best (100%) results with 1 mg L-1 of benzyl aminopurine (BAP) and 2 mg L-1 of indole acetic acid (IAA) combination. In direct regeneration, leave petioles, nodes and internodes explants were cultured for shooting on various concentrations of BAP and kinetin (KIN). Maximum shooting (80%) was obtained from nodal parts with 1.0 mg L-1 of BAP and 0.5 mg L-1 of KIN. Similarly, the best in vitro rooting (24 roots) was achieved with 1 mg L-1 naphthalene acetic acid (NAA). Lallementia royleana showed higher regeneration through direct regeneration than callogenesis. Significant variability (p = 0.002625) among callus induction, plant parts and hormonal combinations were observed. The node and internode explants showed observable callus responses in combinations of 2, 4-Dichlorophenoxyacetic acid (2,4-D) with NAA, and BAP with IAA.