Table 2.
RSA trait mean values obtained from CAE segemented images, Tukey’s Honest Significant Difference (HSD) test groupings and growth rate day−1 for genotypes A, B and C for TRL (total root length), PRL (primary root length), LRB (lateral root branching count), WID (root width), Area (total root area) and LED (length distribution, total root length of the upper 1/3 of the root image divided by the total root length in the lower 2/3 of the root image
| Day | TRL (cm) | PRL (cm) | LRB | WID (cm) | TRArea (cm2) | LED | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 9 | 12 | 6 | 9 | 12 | 6 | 9 | 12 | 6 | 9 | 12 | 6 | 9 | 12 | 6 | 9 | 12 | |
| Genotype A | ||||||||||||||||||
| BLUP | 33.5 | 121 | 184.9 | 16.9 | 32.1 | 42.7 | 18.7 | 51.4 | 84.4 | 3.4 | 10 | 13.8 | 3.1 | 9.3 | 14.6 | 1.1 | 2.0 | 2.1 |
| HSD grouping | b | c | c | b | c | b | c | c | b | b | c | c | b | c | c | c | b | b |
| Growth day−1 | 29.2 | 21.3 | 5.1 | 3.5 | 10.9 | 11.0 | 2.2 | 1.3 | 2.1 | 1.8 | 0.3 | 0.0 | ||||||
| Genotype B | ||||||||||||||||||
| BLUP | 67.2 | 216.2 | 342.9 | 21.3 | 36.2 | 48.1 | 33.5 | 71.5 | 121.3 | 6.5 | 16.8 | 22.3 | 6.5 | 19.5 | 27.6 | 1.9 | 2.5 | 2.2 |
| HSD grouping | a | b | b | a | b | a | b | b | a | a | b | b | a | b | b | b | b | b |
| Growth day−1 | 49.7 | 42.2 | 5.0 | 4.0 | 12.7 | 16.6 | 3.4 | 1.8 | 4.3 | 2.7 | 0.2 | ‒ 0.1 | ||||||
| Genotype C | ||||||||||||||||||
| BLUP | 76.1 | 255.2 | 393.3 | 21.5 | 37.2 | 47.6 | 39.1 | 75.8 | 103.8 | 5.9 | 18.3 | 25 | 6.8 | 23.6 | 36 | 2.1 | 3.4 | 3.1 |
| HSD grouping | a | a | a | a | a | a | a | a | a | a | a | a | a | a | a | a | a | a |
| Growth day−1 | 59.7 | 46.0 | 5.2 | 3.5 | 12.2 | 9.3 | 4.1 | 2.2 | 5.6 | 4.1 | 0.4 | ‒ 0.1 | ||||||