Fig. 2

Histological differences among the S. davidii dwarf mutant, wild type and tall mutant. A Fields of view of stem sections of the S. davidii dwarf mutant, wild type and tall mutant, a: epidermis; b: phloem; c: xylem; d: catheter; e: medulla; f: total cross-sectional area. All scale bars = 50 μm B Example diagram of leaf section index analysis of S. davidii, showing the thicknesses of blade (purple arrow), epidermal (green arrow), inferior (blue arrow), midvein (black arrow), palisade (yellow arrow), and sponge (red arrow) tissues. C, D Section analysis results of stem sections of the S. davidii dwarf mutant, wild type and tall mutant. E, F Results of leaf section analysis of the S. davidii dwarf mutant, wild type and tall mutant. The error bars show the SEM. Different letters associated with the same trait indicate significant differences between treatments (P < 0.05)