Table 3.
Results of generalized linear mixed models testing the effects of associational plant resistance, that is, growing in a resistance mixture (resistant or susceptible variety growing either among varieties of the same resistance class or in resistance mixture plots), genetic diversity of the plot (high and low, with 10 and two varieties, respectively), and variety (genotype) on the number of herbivore damaged leaves of resistant and susceptible woodland strawberry (Fragaria vesca) plants during (A) the last scoring occasion in 2018 and (B) during 2019.
| A | ||||||||
| Year 2018 | ||||||||
| Resistant plants | Susceptible plants | |||||||
| Num Df | Den Df | F | P | Num Df | Den Df | F | P | |
| Variety | 9 | 922.4 | 2.78 | 0.003 | 9 | 1002 | 5.69 | <0.001 |
| Diversity | 1 | 31.82 | 2.20 | 0.148 | 1 | 30.99 | 0.06 | 0.807 |
| Plant size | 1 | 1111 | 27.28 | <0.001 | 1 | 1085 | 22.53 | <0.001 |
| Resistance mixture | 1 | 31.58 | 0.0 | 0.976 | 1 | 31.15 | 6.90 | 0.013 |
| Diversity×Resistance mixture | 1 | 33.28 | 0.41 | 0.526 | 1 | 32.9 | 1.41 | 0.244 |
| B | ||||||||
| Year 2019 | ||||||||
| Variety | 9 | 1120 | 4.35 | <0.001 | 9 | 1066 | 8.73 | <0.001 |
| Diversity | 1 | 30.41 | 7.62 | 0.010 | 1 | 30.61 | 3.49 | 0.071 |
| Resistance mixture | 1 | 29.98 | 0.05 | 0.818 | 1 | 30.83 | 5.92 | 0.021 |
| Plant size | 1 | 1100 | 108.50 | <0.001 | 1 | 1033 | 100.57 | <0.001 |
| Diversity×Resistance mixture | 1 | 32.06 | 0.43 | 0.515 | 1 | 32.33 | 0.05 | 0.828 |
Plant size (height×width, cm2) was measured at the end of the growing season in 2018. Num Df indicates numerator degrees of freedom, and Den Df indicated denominator degrees of freedom.