Analysis of <i>Brachypodium distachyon</i> stem internode development.

<p>(<b>A</b>) Stem and vascular bundle count. (<b>B</b>) Stem height (black) and stem fresh weight (gray). (<b>C</b>) Internode length (black) and stem area (gray). (<b>D</b>) Inner (black circle) and outer (black square) vascular bundle area, and interfascicular region area (gray diamond). (<b>E</b>) Cell wall thickness of xylem vessel and adjacent bundle fibers of inner (black circle) and outer (black square) vascular bundles, sclerenchyma nearest (gray diamond) and second nearest (gray triangle) to the bundle sheath. Growth stages correspond to elongation (E), inflorescence emergence (F), and senescence (S). Data are means ± standard deviation. Points annotated with the same letter are not significantly different at <i>P</i> < 0.05.