Fig. 2
Classification of differentially expressed genes (DEGs) between the F1 hybrids and their parents. According to expression patterns, DEGs detected from the intra- (a) and inter-sectional (b) crosses were further classed into eight clusters as listed in the center of the images, respectively. Numbers in the brackets show genes included in each cluster, and pie charts show the relative proportions of DEGs for each cluster. aza, Camellia azalea; che, C. chekiangoleosa; amp, C. amplexicaulis; F1aza × che, F1 hybrid of C. azalea × C. chekiangoleosa; F1aza × amp, F1 hybrid of C. azalea × C. amplexicaulis. A fold-change of 1.25 combining with FDR < 0.05 were used as threshold for DEGs detection