Table 2.
Model results of effects of treatments and seed mass on germination and germination timing
| Germination |
Germination timing |
|||||||
|---|---|---|---|---|---|---|---|---|
| d.f. | χ2 | P | Sign | d.f. | χ2 | P | Sign | |
| Habitat | 1 | 83·6 | <0·001 | * | 1 | 596·9 | <0·001 | * |
| Light | 1 | 74·0 | <0·001 | * | 1 | 6·40 | 0·011 | * |
| Warmth | 1 | 29·6 | <0·001 | * | 1 | 307·3 | <0·001 | * |
| Fluctuation | 1 | 68·8 | <0·001 | * | 1 | 86·0 | <0·001 | * |
| Seed mass | 1 | 38·5 | <0·001 | * | 1 | 6·51 | 0·011 | * |
| Habitat × light | 1 | 6·0 | 0·01 | * | 1 | 2·24 | 0·13 | |
| Habitat × warmth | 1 | 5·9 | 0·02 | * | 1 | 0·98 | 0·32 | |
| Habitat × fluctuation | – | – | 1 | 8·11 | 0·004 | * | ||
| Habitat × seed mass | 1 | 62·4 | <0·001 | * | 1 | 28·6 | <0·001 | * |
| Light × warmth | 1 | 0·15 | 0·70 | 1 | 18·1 | <0·001 | * | |
| Light × fluctuation | 1 | 21·1 | <0·001 | * | 1 | 15·5 | <0·001 | * |
| Light × seed mass | 1 | 72·8 | <0·001 | * | 1 | 24·6 | <0·001 | * |
| Warmth × fluctuation | 1 | 8·11 | 0·004 | * | 1 | 4·63 | 0·031 | |
| Warmth × seed mass | 1 | 30·5 | <0·001 | * | 1 | 0·90 | 0·34 | |
| Fluctuation × seed mass | 1 | 13·5 | <0·001 | * | 1 | 0·03 | 0·87 | |
| Habitat × light × warmth | 1 | 6·46 | 0·011 | * | 1 | 10·1 | 0·001 | * |
| Habitat × light × fluctuation | – | – | 1 | 0·04 | 0·84 | |||
| Habitat × light × seed mass | 1 | 30·3 | <0·001 | * | – | – | ||
| Habitat × warmth × fluctuation | – | – | 1 | 1·50 | 0·22 | |||
| Habitat × warmth × seed mass | – | – | 1 | 0·19 | 0·66 | |||
| Habitat × fluctuation × seed mass | – | – | 1 | 4·86 | 0·03 | |||
All interactions without explanatory value (improvement AIC <2) have been sequentially excluded from the models (–). P-value approximations were based on Wald χ2 tests (α ≤ 0·025).