غلامرضا عبدی

A protocol for direct embryogenesis induction without an intervening callus production was developed in valerian (Valeriana officinalis L.) using the leaf segments. Direct somatic embryogenesis was induced using by halfstrength MS medium supplemented with 2,4-D (0.5 mg·l-1), glutamic acid (100 mg·l-1), 4% sucrose and 8 g·l-1 agar. The embryo germination and plantlet formation were enhanced on MS medium supplemented with NAA (0.1 mg·l-1) and Kin (2 mg·l-1). Regenerated plants with well-developed root and shoot systems were successfully (72%) transferred to the greenhouse.