Table 5.
Summary of the analyses using constrained principal coordinates analysis applied to environmental variables recorded in populations of Allium oleraceum in the Czech Republic: (a) effects of ploidy levels; (b) effects of groups of populations classified by observed ploidy-level combinations
| Model | Trace (1st axis) | F | P |
|---|---|---|---|
| (a) Ploidy levels | |||
| Overall model | 0·047 | 7·22 | 0·001 |
| 4x vs. 5x | 0·033 | 5·70 | 0·001 |
| 4x vs. 6x | 0·082 | 9·06 | 0·001 |
| 5x vs. 6x | 0·016 | 3·99 | 0·001 |
| (b) Groups | |||
| Overall model | 0·063 | 3·93 | 0·001 |
| 4x vs. 5x | 0·030 | 5·18 | 0·001 |
| 4x vs. 6x | 0·084 | 9·21 | 0·001 |
| 5x vs. 6x | 0·016 | 4·00 | 0·002 |
| 4x vs. 4x + 5x | 0·010 | 1·76 | 0·071 |
| 4x vs. 4x + 6x | 0·018 | 1·96 | 0·039 |
| 5x vs. 4x + 5x | 0·016 | 3·12 | 0·003 |
| 5x vs. 5x + 6x | 0·007 | 1·75 | 0·065 |
| 6x vs. 4x + 6x | 0·009 | 0·95 | 0·473 |
| 6x vs. 5x + 6x | 0·008 | 1·98 | 0·033 |
All effects were tested by Monte Carlo permutation tests using 999 random permutations. See Methods for details.
P-values in bold (except for overall models) are significant after Bonferroni correction [P < 0·017 in the section (a)] or are significant at P = 0·01 in the section (b).