Table 2.
Results of generalized linear mixed models testing the effect of genetic diversity (high and low, with 10 and two varieties, respectively), plot resistance (consisting only of resistant, susceptible varieties, or a 50:50 mixture of the two), and plant size (height×width, cm2) on number of herbivore damaged woodland strawberry (Fragaria vesca) leaves in 2018 and in 2019.
| 2018 last scoring (autumn) | 2019 (mid-summer) | |||||||
|---|---|---|---|---|---|---|---|---|
| Num Df | Den Df | F | P | Num Df | Den Df | F | P | |
| Diversity | 1 | 49.43 | 1.77 | 0.190 | 1 | 45.87 | 10.0 | 0.003 |
| Plot resistance | 2 | 49.68 | 4.82 | 0.012 | 2 | 46.79 | 4.52 | 0.016 |
| Plant size | 1 | 2275 | 101.08 | <0.001 | 1 | 2164 | 309.99 | <0.001 |
| Diversity×Plot resistance | 2 | 50.1 | 0.25 | 0.778 | 2 | 48.58 | 0.80 | 0.453 |
Separate models were constructed for each scoring occasion. Plant size (height×width, cm2) was measured during the last scoring occasion in 2018. Num Df indicates numerator degrees of freedom, and Den Df indicated denominator degrees of freedom.