Table 7.
Correlation of some important traits (ten root traits and three shoot traits) three soybean genotypes (#054, #055, and #071) between the semi-hydroponic system (39 days after sowing, DAS) and the data from rhizoboxes assessed (a) 38 DAS, (b) 81 DAS, and (c) 160 DAS. At 160 DAS, only root mass (RM), root–shoot mass ratio (RSM), and shoot mass (SM), were measured.
| Traits | (a) 38 DAS | (b) 81 DAS | (c) 160 DAS |
|---|---|---|---|
| RM | 0.591 | 0.665 | 0.901 ** |
| RSM | −0.648 | 0.187 | 0.884 ** |
| HL | 0.690 * | 0.670 * | 0.672 * |
| SH | 0.732 * | 0.801 ** | 0.776 * |
| SM | 0.887 ** | 0.511 | 0.900 ** |
| RL | 0.854 ** | 0.886 ** | - |
| RD | 0.004 | 0.310 | - |
| SRL | −0.397 | −0.563 | - |
| RL-upper | 0.831 ** | 0.851 ** | - |
| RL-lower | 0.299 | 0.866 ** | - |
| RL-fine | 0.179 | 0.202 | - |
| RL-coarse | 0.733 * | 0.664 | - |
| RLR-upper/lower | −0.196 | 0.195 | - |
Correlation is significant if p ≤ 0.05 (*) or p ≤ 0.01 (**) (see Table 1 for trait descriptions and units).