Table II. Loading matrix of PCA, scored by 10 individual traits.
Boldface values show the highest contribution(s) to the component.
| Individual Trait | PC1IT | PC2IT | PC3IT | PC4IT | PC5IT |
|---|---|---|---|---|---|
| Root formation zone (RFZ) | −0.95 | 0.11 | 0.21 | −0.10 | 0.16 |
| Branching density (Bd) | 0.94 | 0.01 | −0.21 | 0.03 | 0.28 |
| Lateral root number (LR#) | 0.67 | 0.58 | −0.43 | −0.09 | −0.02 |
| Growth of primary root (P2) | −0.94 | 0.32 | −0.01 | −0.01 | 0.06 |
| Primary root length (P) | −0.89 | 0.43 | 0.01 | −0.13 | 0.01 |
| Lateral root length (LRI) | 0.56 | 0.17 | 0.79 | 0.16 | 0.03 |
| Length ratio (LR) | 0.98 | 0.09 | −0.10 | 0.01 | −0.01 |
| Total root length (TRL) | 0.19 | 0.95 | 0.21 | −0.14 | −0.02 |
| Total lateral root length (TLRL) | 0.85 | 0.49 | 0.17 | −0.03 | −0.03 |
| LR# in P2 | −0.60 | 0.65 | −0.28 | 0.37 | 0.001 |
| Variability (%) | 63.1 | 22.30 | 10.53 | 2.22 | 1.08 |
| Cumulative variability (%) | 63.1 | 85.40 | 95.94 | 98.16 | 99.24 |