Table 5.
Piecewise linear functions selected for rtcs 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 | |
| A3 | 11.2 | 0.34 | 67 | 617 | 83.4 | 0.81 | 29 | 1,385 | 7.7 | 0.05 n.s. | 16 | 2,277 |
| A1 | 8.3 | 0.36 | 92 | 535 | 59.6 | 0.88 | 60 | 1,185 | 24.5 | 0.34 | 62 | 3,407 |
| A′36 | 2.3 | 0.15 n.s. | 116 | 506 | 92.2 | 0.93 | 39 | 1,146 | 25.5 | 0.3 n.s. | 22 | 1,998 |
| A2 | 27.9 | 0.64 | 68 | 323 | 157.5 | 0.86 | 29 | 744 | 10.1 | 0.17 n.s. | 35 | 2,257 |
| A′37 | 20.4 | 0.63 | 42 | 313 | 82.2 | 0.84 | 51 | 707 | 31.2 | 0.47 | 40 | 1,514 |
| A′38 | 9.7 | 0.51 | 46 | 272 | 111.7 | 0.82 | 41 | 505 | 28.7 | 0.49 | 47 | 1,621 |
| A′39 | 66 | 0.84 | 37 | 980 | 23.5 | 0.23 n.s. | 27 | 1,844 | ||||
| B15 | 139.5 | 0.96 | 30 | 520 | -9.5 | −0.18 n.s. | 22 | 1,493 | ||||
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.