Morphological features of na2-1, d5, and double mutant combinations. All images were taken at maturity. A to D, Wild-type plant (A), na2-1 plant (B), d5 plant (C), and na2-1/d5 plant (D). E to H, Tassel phenotypes of wild-type (E), na2-1 (F), d5 (G), and na2-1/d5 (H) plants. I to L, Ear phenotypes of wild-type (I), na2 -1 (J), d5 (K), and na2-1/d5 (L) plants. Silks have been partially removed from K and L. Red arrows indicate stamens on ears in K and L. Bars = 10 cm (A–H) and 2 cm (I–L).