Table 1. Summary of hierarchical mixed-effects linear models testing for differences in fitness components among cross types (CT), populations and their interaction in Arabidopsis lyrata.
| Dependent variable | N |
Effects |
||
|---|---|---|---|---|
| Cross type | Population | CT × Pop. | ||
| Summary performance measures | ||||
| Multipl. perform. I | 813 | 13.00*** | 7.96** | 2.66 |
| ln Multipl. perform. II | 928 | 17.71*** | 8.15** | 0.83 |
| Life stage components | ||||
| ln Seed size | 1320 | 0.17 | 49.40*** | 5.90 |
| Germination | 3176 | 2.99 | −46.11 | 0.00 |
| Pathogen infection | 918 | 0.71 | −56.98 | 0.00 |
| Flowering time 2009 | 590 | 1.25 | 6.70** | 2.30 |
| Flowers 2009 | 796 | 3.29 | −22.40 | 0.00 |
| Fruits 2009 | 796 | 4.18* | −19.38 | 0.16 |
| Pollen number | 1106 | 3.87* | 10.20** | 1.00 |
| Pollen size | 1106 | 15.24*** | 11.70*** | 3.30 |
| Flowering time 2010 | 689 | 5.22* | 7.40** | 8.40* |
| Flowers up to 2010 | 796 | 8.30** | 4.19* | 9.76* |
| ln Fruits up to 2010 | 796 | 10.36*** | 4.36* | −3.66 |
| Flowers up to 2012 | 796 | 9.21** | 6.48* | 10.08* |
| ln Fruits up to 2012 | 796 | 13.29*** | 7.85** | −0.84 |
F-values for the fixed effect of CT (df=2,24), and likelihood ratio statistics for the random effects of population (df=1) and CT-by-population (df=3). Block was included in the models but not shown here. Other random effects not shown were maternal genotype within population, the maternal genotype-by-cross type interaction, cross identity within maternal genotype and population, and, where applicable, tub/plant within cross identity, maternal genotype and population. Significance is indicated: *P<0.05, **P<0.01, ***P<0.001.