Expression levels of DoGES1 in different Dendrobium officinale tissues. (A) Transcript levels of DoGES1 in roots, stems, leaves and flowers. (B) Transcript levels of DoGES1 in three developmental stages of D. officinale flowers. (C) Transcript levels of DoGES1 in three D. officinale flower organs. (D) Transcript levels of DoGES1 among the harvest time points. R, roots; S, stems; L, leaves; F, flowers; BF, budding flowers; SF, semi-open flowers; FF, fully open flowers; PE, petal; GY, gynostemium; LA, labellum. Three developmental stages of D. officinale flowers include budding, semi-open flower, and fully open flower are shown in Figure S6. Four time points (8:00, 11:00, 14:00, and 17:00) indicate the time of day when petals were sampled. Different letters above error bars (standard deviation) (n = 10) indicate significant differences among different treatments (p < 0.05, Duncan’s multiple range test).