Plant regeneration from in vitro derived leaf explants of male pistachio. (A) The regenerated leaves used for culture initiation, bar: 8.4 mm. (B) Globular structures developed on the margin of the leaves after 4 weeks of culture (See arrows), bar: 5.8 mm. (C) Induction of shoot initials via direct organogenesis on MS Medium supplemented with 1.0 mg l