Table 1. Summary of the full mixed models for growth of 34 P. radiata open-pollinated families in constitutive and MJ-treated conditions 15 days after MJ application.
| Fixed effects |
Height |
Diameter |
||||
|---|---|---|---|---|---|---|
| |
df |
F |
P-value |
df |
F |
P-value |
| Induction treatment | 1, 3 | 10.8 | 0.046 | 1, 3 | 1.5 | 0.312 |
| Random effects | Varcomp | χ2 | P-value | Varcomp | χ2 | P-value |
| Family (in control) | 19.5±13.4 | 3.8 | 0.026 | 0.02±0.05 | 0.1 | 0.376 |
| Family (in induced) | 20.5±12.6 | 4.8 | 0.014 | 0.01±0.04 | 0.1 | 0.376 |
| Correlation control–induced | 0.40±0.40 | 0.8 | 0.186 | 1.00±0.00 | 0.1 | 0.376 |
| Residual (control) | 126.9±17.8 | 1.10±0.14 | ||||
| Residual (induced) | 108.7±15.4 | 0.88±0.11 | ||||
Abbreviations: df, degree of freedom; MJ, methyl jasmonate.
The treatment of defence induction (T) is a fixed effect, and the F values and corresponding df are shown. The full mixed model assumed a completely unstructured (co)variance structure for the family random factor and heterogeneous residual variances across treatments. Variance component estimates (±s.e.) and the likelihood ratio tests (χ2) testing whether they are significantly greater than zero are shown. Significant P-values (P<0.05) are typed in bold.