Phenotypic comparison between the wild type and the osdex1 mutant. A, Wild-type plant (left) and the osdex1 mutant plant (right) after heading. B, Part of the wild-type panicle showing the dehisced anther (left) and part of the osdex1 panicle (right) showing a smaller anther at the pollination stage. C, Wild-type (left) and osdex1 (right) flower organs after removal of the palea and lemma. D, Wild-type (left) and osdex1 (right) flowers before anthesis. E, Wild-type stained pollen at stage 13. Bars = 10 cm (A), 2 cm (B), 5 mm (C and D), and 100 μm (E).