Differentiation i.e. development of single cell into complex multicellular organs & tissues, results through selective gene expression which is specific to cell type, region & organ. Therefore, identification of biochemical markers during sequential stages of organogenesis could be used to identify early events of differentiation, embryogenic potential or serve as an indication of loss of regeneration capacity with culture age. Keeping in view these facts, this M. Phil. dissertation on T. indica, an important medicinal plant comprises of six chapters: Chapter-1 highlights...