Figure 2.

Histological analyses of the WT and s2-89 mutant spikelet at booting stage. (a) Transverse sections at the apical region of the spikelet hulls. Pa: palea; Le: lemma. (b) Close-up views of the cross-section boxed in (a) of palea. ipc: inner parenchymal cell; opc: out parenchymal cell. (c) Close-up views of the cross-section boxed in (a) of lemma. (d–f) Comparison of total length, cell number and cell area in the inner parenchymal cell layers of palea of WT and s2-89. (g–i) Comparison of total length, cell number and cell area in the inner parenchymal cell layers of lemma of WT and s2-89. Data are given as mean ± SE (n = 10). Double asterisks and asterisk indicate significant differences between WT and s2-89 at P < 0.01 and P < 0.05 by Student’s t test. Each scale bar is indicated.