Fig. 7
From: GhAAO2 was observed responding to NaHCO3 stress in cotton compared to AAO family genes
Prediction of the number of duplicated gene pairs involved in different combinations from four Gossypium species. A Gh represents G. hirsutum, GB represents G. barbadense, Gr represents G. raimondii, Ga represents G. arboreum. Different colors represent Ka / Ks gene pairs between GB-GB, Gr-Ga, Gr-Gr, Ga-Ga, Gh-GB, Gh-Gh, Gh-Gr, Gh-Ga, GB-Gr, GB-Ga. B Displays the number of duplicated gene pairs lies under the extent of selection pressure, legends on top with blue, orange, and grey colors show the range of selection pressure