Table 3.
Bivariate relationships among seven root traits in C. arabica.
| log-D | log-SRL | log-SRA | log-SRTD | log-RLD | Nroot | log-CNroot | |
|---|---|---|---|---|---|---|---|
| log-D | — | -0.212(-0.341, -0.251) | -0.361(-0.434, -0.301) | -0.273(-0.328, -0.228) | -0.229(-0.288, -0.183) | -1.846(-2.312, -1.473) | 0.8008(0.644, 0.995) |
| log-SRL | 0.645 (<0.001) | — | 0.809(0.700, 0.934) | 0.935(0.834, 1.048) | 0.784(0.626, 0.982) | 1.845(1.528, 2.250) | -2.740(-3.323, -2.260) |
| log-SRA | 0.497 (<0.001) | 0.687 (<0.001) | — | 0.756(0.628, 0.910) | 0.634(0.503, 0.800) | 0.667(0.538, 0.824) | -2.216(-2.731, -1.798) |
| log-SRTD | 0.501 (<0.001) | 0.804 (<0.001) | 0.479 (<0.001) | — | 0.839(0.658, 1.068) | 1.983(1.617, 2.431) | -2.930(-3.582, -2.397) |
| log-RLD | 0.209 (<0.001) | 0.227 (<0.001) | 0.180 (<0.001) | 0.105 (0.005) | — | 2.364(1.873, 2.984) | -3.494(-4.394, -2.778) |
| Nroot | 0.226 (<0.001) | 0.431 (<0.001) | 0.318 (<0.001) | 0.369 (<0.001) | 0.172 (<0.001) | — | -1.478(-1.630, -1.340) |
| log-CNroot | 0.279 (<0.001) | 0.436 (<0.001) | 0.335 (<0.001) | 0.387 (<0.001) | 0.198 (<0.001) | 0.856 (<0.001) | — |
All relationships are based on standardized major axis regression analysis, where n = 62 for all tests. The upper right portions of the table represent the slopes of bivariate trait relationships with associated 95% confidence limits (in brackets). The bottom left portion represents r2 values and associated p-values (in brackets).