Table 6.
Piecewise linear functions selected for rum-1 lateral roots.
| Division zone | Elongation zone | Mature zone | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Slope | Correlation | No. cells | DZ-EZ limit | Slope | Correlation | No. cells | EZ-MZ limit | Slope | Correlation | No. cells | End position | |
| A5 | −3.3 | −0.28 | 157 | 787 | 65 | 0.96 | 73 | 2,360 | 21.1 | 0.22 n.s. | 29 | 4,090 |
| A7 | 3 | 0.15 n.s. | 71 | 456 | 62 | 0.85 | 55 | 1,123 | 41 | 0.58 | 13 | 2,109 |
| A′41 | −6 | −0.17 n.s. | 75 | 452 | 75 | 0.84 | 61 | 1,246 | 16.9 | 0.18 n.s. | 16 | 2,329 |
| A4 | 0 | 0 n.s. | 101 | 399 | 42.3 | 0.8 | 87 | 1,068 | 6.5 | 0.08 n.s. | 46 | 1,870 |
| A′40 | 19.5 | 0.43 | 122 | 385 | 139.9 | 0.71 | 41 | 689 | 13 | 0.2 n.s. | 52 | 2,235 |
| A6 | −14.7 | −0.57 | 68 | 371 | 43.1 | 0.83 | 67 | 958 | 73.7 | 0.64 | 31 | 2,139 |
| A′42 | 26.7 | 0.57 | 73 | 295 | 145.3 | 0.93 | 33 | 627 | 2.4 | 0.06 n.s. | 55 | 2,325 |
| C22 | 11.6 | 0.61 | 73 | 1,510 | 14.4 | 0.34 | 38 | 2,820 | ||||
| C24 | 9.8 | 0.38 | 62 | 540 | 13.5 | 0.67 | 81 | 3,247 | ||||
| C23 | 85.2 | 0.85 | 39 | 732 | 22.6 | 0.64 | 48 | 2,008 | ||||
For each lateral root (ordered in decreasing length of the division zone), the parameters of the piecewise linear function (slope × 1,000 in μm/mm, correlation coefficient for each zone –division zone (DZ), elongation zone (EZ) and mature zone (MZ), n.s. for non-significant−, limits between zones and position of the most shootward cell in μm) and the number of cells assigned to each zone are given.