Effect of l-proline and l-tryptophan on somatic embryogenesis and plantlet regeneration of rice (Oryza sativa L. cv. Pusa 169)

Here we report our assessment of the promotive effect of proline and tryptophan on the frequency of callusing and regeneration as also on the absolute number of plantlets regenerated per mature seed used for callus initiation. Finally, scanning electron microscopic evidence for regeneration via somatic embryogenesis in seed cultures is also given