Fig. 3

Microscopic analyses of paraffin sections of wild type and osropgef7b-1 spikelets at basal position. a Transverse section of wild type. Stamens were marked with asterisks. b-d Transverse section of osropgef7b-1. b A flower with two carpels in different sizes, ten stamens and four lodicules, and non-overlapping lemma and palea. c A flower with three carpels, two of which were fused together, twelve stamens, two glume-like organs, four lodicules, and non-overlapping lemma and palea. d A flower with twelve stamens, four lodicules, and two carpels separated by two partially fused paleae. e-h) Sketches depicting the upper photos of paraffin sections, (e) for (a), (f) for (b), (g) for (c), and H for D, respectively. e wild type and (f-h) osropgef7b-1 flowers. ca, carpel; gl, glume; glo, glume-like organ; le, lemma; lo, lodicules; ov, ovary; pa, palea; sta, stamen; Scale bars: (a to d) 100 μm