Table 1.
Relationship between total number of cells per radial row (total width) of the annual ring and number of incompletely differentiated latewood tracheids per radial row (width of incompletely differentiated tracheids) in silver fir trees in October
| Tree number |
Number of xylem cells per radial row in outer growth ring |
Number of incompletely differentiated xylem cells per radial row |
Width of annual growth ring (mm) |
Width of zone of incompletely differentiated xylem cells (μm) |
|---|---|---|---|---|
| 1 | 11·2 | 0·0 | 0·3 | 0·0 |
| 2 | 15·6 | 0·0 | 0·5 | 0·0 |
| 3 | 36·3 | 0·2 | 1·3 | 1·9 |
| 4 | 40·6 | 0·4 | 1·6 | 4·4 |
| 5 | 48·8 | 0·4 | 2·0 | 4·9 |
| 6 | 59·0 | 2·2 | 2·2 | 7·9 |
| 7 | 69·2 | 1·0 | 2·4 | 26·0 |
| 8 | 108·0 | 7·0 | 4·0 | 90·6 |
| 9 | 117·3 | 5·6 | 4·3 | 96·1 |
| 10 | 124·8 | 5·7 | 4·7 | 140·7 |
In all cases, number of measurements = 5.