Aberrant structure of floral organs in osku70-1 mutant lines. A, Close-up inspection of the stamens of wild-type and G2 and G2-1 osku70-1 flowers. Wild-type filaments contain six stamens, while mutant filaments contain abnormal numbers of stamens. Asterisks depict multiple anthers in one filament; arrows indicate stigmas. Bars = 0.5 cm. B, A spikelet from wild-type and G2 and G2-1 osku70-1 lines. G, Glume; L, lemma; P, palea. Bars = 0.5 cm. [See online article for color version of this figure.]