Fig. 4.

Neighbour-joining trees of CYC-like, RAD-like and DIV-like genes. Trees from a to c are reconstructed based on amino acid sequences. a CYC is from A. majus, others are CYC-like genes from Gesneriaceae species (see Additional file 2: Table S2). Trees show CrCYCs cluster into three groups with high support. b The tree shows CrRADs cluster into two distinct clade with high support. c Bootstrap values from NJ and ML are listed above and below branches respectively. Bootstrap values > 70 are shown. Detailed sequences information is listed in Additional file 2: Table S2