Table 2.
Comparison of various traits measured by IJ_Rhizo, RhizoVision Explorer (RVE) and WinRhizo™ using scanned copper wires images (n = 54) of known measurements. Length and average diameter are given in millimetres, and surface area and volume are given in squared millimetres and cubic millimetres, respectively.
| Traits | RMSE | MBE | Coefficient of determination | P-value | Software |
|---|---|---|---|---|---|
| Length (mm) | 10.74 | 7.84 | 1 | <0.001 | IJ_Rhizo |
| 4.56 | 0.02 | 1 | <0.001 | RVE | |
| 6.67 | −4.2 | 1 | <0.001 | WinRhizo™ | |
| Avg. diameter (mm) | 0.06 | 0.05 | 1 | <0.001 | IJ_Rhizo |
| 0.05 | 0.03 | 1 | <0.001 | RVE | |
| 0.05 | 0.04 | 1 | <0.001 | WinRhizo™ | |
| Surface area (mm2) | 0.4 | 0.2 | 1 | <0.001 | IJ_Rhizo |
| 1.42 | 1.03 | 1 | <0.001 | RVE | |
| 1 | 0.72 | 1 | <0.001 | WinRhizo™ | |
| Volume (mm3) | 0.28 | −0.1 | 0.89 | <0.001 | IJ_Rhizo |
| 0.04 | 0.02 | 1 | <0.001 | RVE | |
| 0.28 | −0.1 | 0.88 | <0.001 | WinRhizo™ |