Table 2. Analysis of deviance on effects fitted to germination percentage of AC and BM and a 1:1 mixture of the two species in different the two laboratory trials.
| Trial | Model | DF | Deviance | Residual DF | Residual deviance | F-value | P-value |
|---|---|---|---|---|---|---|---|
| Laboratory 1 | NULL | 71 | 237.8 | ||||
| Plant diversity (DIV) | 2 | 7.2 | 69 | 230.6 | 3.6 | 0.03* | |
| Spacing (SPA) | 1 | 3.7 | 68 | 226.9 | 3.7 | 0.06 | |
| DIV × SPA | 2 | 4.4 | 55 | 96.1 | 2.2 | 0.11 | |
| Laboratory 2 | NULL | 431 | 2602.8 | ||||
| Plant diversity (DIV) | 2 | 180.2 | 429 | 2422.6 | 90.1 | <0.0001*** | |
| Cumulative drought (CD) | 3 | 1016.6 | 424 | 1031.1 | 338.9 | <0.0001*** | |
| Temperature (T) | 2 | 374.9 | 427 | 2047.7 | 187.4 | <0.0001*** | |
| DIV × CD | 6 | 4.2 | 413 | 878.3 | 0.7 | 0.65 | |
| DIV × T | 4 | 148.0 | 419 | 882.5 | 37.0 | <0.0001*** | |
| CD × T | 6 | 31.0 | 407 | 847.2 | 5.2 | <0.0001*** | |
| DIV × CD × T | 12 | 14.4 | 395 | 832.8 | 1.2 | 0.27 |
Note:
The analysis used a GLM with binomial error distribution and probit link function (significant codes: *** = P < 0.001 and * = P < 0.05).