Fig. 2From: Somatic embryogenesis and plant regeneration of cassava (Manihot esculenta Crantz) landraces from CameroonEfficiency of primary and secondary somatic embryogenesis as indicated by frequency of induction (A) and average number of somatic embryos per explant (B). Values represent the mean ± SD (n = 50). Different letters on error bars are significantly different at α = 0.05 (Newman–Keuls test)Back to article page