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Table II
Anatomical parameter statistics of trees sampled by species and tree part.
| Balsam fir | Stem | Root | ||||
|---|---|---|---|---|---|---|
| Parameters | RW | EW | LW | RW | EW | LW |
| Tracheid count | 33.7 (8.1) | 26.8 (7.1) | 6.9 (1.9) | 39.7 (23.4) | 33.2 (22.1) | 6.5 (3.1) |
| Tracheid count (%) | 80 | 20 | 84 | 16 | ||
| Lumen area | 982.7 (255.1) | 166.0 (122.2) | 981.1 (301.7) | 211.8 (128.9) | ||
| Cell wall thickness | 2.5 (0.7) | 4.2 (0.9) | 2.9 (0.8) | 4.5 (0.8) | ||
| Cell radial diameter | 37.0 (5.4) | 16.0 (6.0) | 38.4 (6.2) | 18.8 (6.0) | ||
| Cell wall/lumen ratio | 0.09 (0.04) | 0.82 (0.52) | 0.10 (0.05) | 0.7 (0.4) | ||
| Black spruce | Stem | Root | ||||
| Parameters | RW | EW | LW | RW | EW | LW |
| Tracheid count | 20.7 (6.2) | 13.0 (4.1) | 7.7 (2.9) | 35.5 (23.6) | 23.9 (19.3) | 11.6 (6.7) |
| Tracheid count (%) | 63 | 37 | 67 | 33 | ||
| Lumen area | 724.2 (187.7) | 124.4 (95.9) | 649.3 (200.3) | 193.4 (111.5) | ||
| Cell wall thickness | 2.5 (0.6) | 4.5 (1.1) | 3.5 (0.8) | 5.4 (1.1) | ||
| Cell radial diameter | 31.4 (5.2) | 16.0 (5.3) | 33.8 (4.9) | 22.1 (6.5) | ||
| Cell wall/lumen ratio | 0.10 (0.05) | 0.95 (0.51) | 0.15 (0.11) | 0.67 (0.43) | ||
RW: Ring-width; EW: earlywood; LW: latewood.