In Vitro somatic embryogenesis in Acacia Arabica. (a) Development of embryogenic callus from immature zygotic embryos on MS medium +1.5 mg/l Kn, 2.0 mg/l 2,4-D after 4 weeks of culture. (b) Secondary somatic embryogenesis on medium having 1.5 mg/l Kn, 2.0 mg/l 2,4-D after 4 weeks of subculture. (c, d) Torpedo shaped somatic embryos. (e) Somatic embryo derived plantlets on strength MS medium supplemented with 0.25 mg/l BA and 2% sucrose after 3 weeks of culture.
