Fig. 2. rgo1 affects the ear and tassel spikelets. Side views of (A) a wild-type ear with regular rows of kernels and (B) a rgo1 ear with irregular rows of kernels. The rgo1 ear has embryos facing the base of the ear (arrow in B and D) and a fused kernel (arrowhead). Bottom views of (C) a wild-type and (D) a rgo1 ear show embryos facing the base of the ear only in rgo1 ears. (E,F) Fused kernels have two embryos (e), visible on the two faces (E and F) of this open pollinated example. Wild-type tassel spikelets (G) contain two flowers (f), while rgo1 spikelets contain three (H). Both are surrounded by leafy glumes (g).

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