Bud and apex morphology of EBB1-oe transgenics. Dormant bud (A, B, D, and E) and actively growing vegetative SAM (C and F) in WT-717 plants (A–C) and EBB1-oe transgenics (D–F). Note the difference in the shape of scales in the transgenic line, which form a more open area around the meristem. In WT buds, the meristem is more compactly surrounded by buds’ scales. (B and E) Close-up magnifications of the same sections shown in A and D. (Scale bars: A and D, 500 μm; B, C, E, and F, 100 μm.)