Figure 12.

A model illustrating the putative inheritance of anthocyanin pigmentation in tissues of the main Citrus species and hybrids considered in this study. A scheme of leaves, fruits, and flowers tissue pigmentation is shown. A representation of transcription factors (Ruby and Noemi), biosynthetic genes (PAL, dihydroflavonol 4-reductase (DFR), anthocyanidin synthase (ANS), glutathione S-transferase (GST)) and their relationship based on the qualitative statistical analysis describing the difference between pigmented and non-pigmented samples in tissues is presented.