Influence of Type and Age of Primary Somatic Embryo on Secondary and Cyclic Somatic Embryogenesis of Cassava (Manihot esculenta Crantz) Journal title: Biotechnology Journal International Authors: Jelili T. Opabode, Olufemi O. Oyelakin, Oluyemisi A. Akinyemiju, Ivan L. Ingelbrecht Subject(s):