| Vascular bundle number/4mm2 on cross section |
| - Near epidermis | 16.8A (1.1) | 16.6A (1.2) | 16.7A (0.8) | 16.5A (1.2) | 17.1A (0.6) |
| - Near pith | 5.1A (1.1) | 4.8A (1.3) | 5.1A (0.9) | 4.6A (0.7) | 4.5A (0.8) |
| Vascular bundle width near pith on cross section |
| - Radial direction (μm) | 387.1A (10.9) | 415.9B (15.4) | 432.4C (25.1) | 535.2D (26.2) | 443.8C (19.5) |
| - Tangential direction (μm) | 536.9A (13.3) | 630.5C (15.6) | 606.5B (14.5) | 651.7D (18.2) | 689.7E (31.1) |
| - R/T | 0.72 (0.01) | 0.66 (0.01) | 0.72 (0.04) | 0.82 (0.03) | 0.65 (0.01) |
| Vessel diameter near pith on cross section (μm) | 121.8A (7.4) | 143.1C (7.2) | 146.1CD (6.8) | 148.5D (6.5) | 137.9B (7.9) |
| Thickness of inner layer on cross section (μm) | 301.3A (35.1) | 350.3B (24.2) | 459.9C (30.4) | 457.6C (30.7) | 455.9C (30.1) |
| Parenchyma length near pith on cross section |
| - Radial direction (μm) | 38.1A (5.3) | 32.9B (6.8) | 37.8A (4.1) | 37.6A (5.7) | 40.8A (4.8) |
| - Tangential direction (μm) | 83.0A (10.4) | 107.5C (15.9) | 95.1B (5.1) | 91.7B (6.8) | 108.2C (10.4) |
| - R/T | 0.37 (0.05) | 0.31 (0.07) | 0.40 (0.02) | 0.41 (0.03) | 0.38 (0.02) |
| Parenchyma width and length on radial section |
| - Width (μm) | 52.5C (8.8) | 45.3A (6.4) | 50.1C (7.6) | 48.4BC (6.2) | 56.1D (12.5) |
| - Length (μm) | 104.1A (25.7) | 110.3A (14.5) | 117.7B (16.2) | 127.4C (17.3) | 116.3B (21.1) |