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Comparison of scanning electron micrograph observations, I2-KI staining, and anther morphology in sterile (A, C, E, G, I, K, and M) and fertile (B, D, F, H, J, L, and N) wheat plants at the trinucleate stage. A, B, E, and F, anther; C and D, I2-KI staining; G, H, I, and J, outer epidermal cells; K, L, M, and N, trinucleate cells. Scale bars are 0.5 mm in A and B; 50 μm in C to F; 100 μm in G, H, K, and L; 10 μm in I to J; and 30 μm in M and N.
