Fig. 4From: Transcriptome regulation of carotenoids in five flesh-colored watermelons (Citrullus lanatus)Hierarchical clustering analysis (a) and Principal component analysis (b) of the overall differentially expressed genes. The log10 (FPKM+ 1) value was normalized and transformed. R, P, O, Y, and W represents the red-, pink-, orange-, yellow-, and white-fleshed genotypes, respectivelyBack to article page