Figure 3From: Enhanced somatic embryogenesis in Theobroma cacao using the homologous BABY BOOM transcription factorTcBBM expression throughout the process of primary and secondary embryogenesis. A. Schematic of the process of either primary (top) or secondary somatic (bottom) embryogenesis. PCG = Primary Callus Growth media, SCG = Secondary Callus Growth media, ED = Embryo Development media. B. TcBBM expression throughout primary somatic embryogenesis. C. TcBBM expression throughout secondary somatic embryogenesis (* represents a p-value < 0.05 for the Student’s t-test). D. TcBBM expression in embryonic (EC) and non-embryonic calli (Non-EC) obtained from secondary SE calli. Non-embryonic calli were classified as undifferentiated calli tissue that had not produced visible embryos up to the date the tissue was harvested. Embryogenic calli is also undifferentiated tissue; however, it is harvested from explants that had produced visible embryos. Expression levels for panels B, C and D were analyzed by RT-qPCR and the TcBBM gene normalized relative to that of TcACP1 and TcβTub genes.Back to article page