Gene duplication and relaxation from selective constraints of GCYC genes correlated with various floral symmetry patterns in Asiatic Gesneriaceae tribe Trichosporeae
Fig 1
Flower morphology and developmental stages of Conandron ramondioides, Hemiboea bicornuta, and Lysionotus pauciflorus.
(A) Three developmental stages (early, middle, and late) of C. ramondioides—Early Stage: petal length < sepal length; Middle Stage: petal length > sepal length; Late Stage: flower at anthesis. (B) Floral diagram: Five sepals (sep, black); five petals (from p1 to p5, blue); five stamens (st, yellow); gynoecium (gyn, red). (C) Three developmental stages of H. bicornuta—Early Stage: petal length < sepal length; Middle Stage: petal length > sepal size; Late Stage: flower at anthesis. (D) Floral diagram: sepals (sep, black); dorsal petals (dp, blue); lateral petals (lp, yellow); ventral petal (vp, orange); staminodes (sta, blue); ventral stamens (vst, orange); gynoecium (gyn, light blue). (E) Three development stages of L. pauciflorus—Early Stage: petal length < sepal length; Middle Stage: petal length > sepal size; Late Stage: flower at anthesis. (F) Floral diagram: sepals (sep, black); dorsal petals (dp, blue); lateral petals (lp, yellow); ventral petal (vp, orange); staminodes (sta, blue); ventral stamens (vst, orange); gynoecium (gyn, light blue).