Table 7.
Loadings values of some morphometric and chemical variables on the axes identified by principal components analysis for control (untreated) maize plants and plants supplied for 48 h with extracts obtained from the seaweeds Laminaria (A) and Ascophyllum nodosum spp. (B–F).
| Variable | PC1 | PC2 | PC3 |
|---|---|---|---|
| Mn | 0.940 | 0.091 | −0.175 |
| Fe | 0.916 | 0.317 | −0.101 |
| Mo | 0.868 | 0.240 | −0.027 |
| Ca | 0.826 | 0.373 | 0.244 |
| B | 0.634 | 0.403 | 0.150 |
| Zn | 0.550 | −0.099 | −0.087 |
| EstL | 0.115 | 0.928 | −0.195 |
| EstR | 0.190 | 0.885 | −0.169 |
| Mg | 0.427 | 0.832 | 0.054 |
| S | 0.600 | 0.756 | −0.153 |
| Cu | −0.334 | 0.558 | 0.343 |
| Surface | −0.122 | −0.152 | 0.948 |
| Length | −0.046 | −0.063 | 0.946 |
| Fine | −0.122 | 0.091 | 0.903 |
| Tips | 0.153 | −0.154 | 0.820 |
| Diameter | −0.076 | −0.449 | 0.520 |