Table 2.
Results of numerical analysis involving Stipa pennata group. Principal component analysis (PCA): factor loadings for 18 characters, eigenvalues and percent variation. The highest factor loadings (≥ 0.6) are bolded. One-way ANOVA: F and p values for characters with normal distribution. Kruskal-Wallis test: H and p values for characters with non-normal distribution. The highest F/H values are bolded. For characters abbreviations see Table 1.
| Character abbreviation | PC 1 | PC 2 | PC 3 | ANOVA | |
|---|---|---|---|---|---|
| F/H | p | ||||
| AL | -0.77 | 0.24 | 0.33 | 20.28 | 0.000 |
| AwnL | -0.41 | 0.68 | -0.04 | 19.01 | 0.000 |
| CL | -0.81 | -0.34 | 0.27 | 248.95 | 0.000 |
| Col1L | 0.23 | 0.72 | 0.41 | 47.26 | 0.000 |
| Col2L | -0.24 | 0.58 | 0.45 | 15.27 | 0.001 |
| CRL | -0.62 | -0.07 | 0.21 | 53.73 | 0.000 |
| CRW | 0.55 | 0.37 | -0.16 | 64.72 | 0.000 |
| DDL | -0.50 | 0.48 | 0.13 | 15.29 | 0.001 |
| DVL | -0.21 | 0.19 | 0.38 | 7.20 | 0.027 |
| LC | -0.38 | 0.65 | -0.39 | 64.24 | 0.000 |
| LCL | -0.62 | -0.36 | -0.01 | 17.41 | 0.000 |
| LigC | -0.66 | -0.14 | -0.13 | 113.10 | 0.000 |
| LigIV | -0.37 | 0.60 | -0.16 | 118.02 | 0.000 |
| LP | -0.76 | -0.33 | -0.11 | 100.61 | 0.000 |
| LV | -0.23 | 0.74 | -0.34 | 28.80 | 0.000 |
| NF | -0.67 | -0.35 | -0.03 | 79.41 | 0.000 |
| SL/ColL | -0.57 | -0.16 | -0.57 | 11.76 | 0.001 |
| WA | -0.11 | 0.48 | -0.29 | 21.46 | 0.000 |
| Eigenvalue | 5.01 | 3.87 | 1.51 | ||
| Percent variation (%) | 27.85 | 21.48 | 8.38 | ||