Table 1.
ANOVAs to explore the effects of antheridiogens on arcsine-transformed percentage of male gametophytes and gametophyte size of Dryopteris spp.
| Variable | Effect | d.f. | m.s. | F |
|---|---|---|---|---|
| Male gametophytes (%) | Source species | 2 | 138·220 | 3·800* |
| Target species | 2 | 1699·869 | 46·728*** | |
| Source × target species | 4 | 55·019 | 1·512 n.s. | |
| Error | 27 | 36·378 | ||
| Gametophyte size | Antheridiogen (present or absent) | 1 | 4327·707 | 234·371*** |
| Target species | 2 | 43·199 | 2·340 n.s. | |
| Time | 1 | 5126·119 | 277·609*** | |
| Antheridiogen × target species | 2 | 63·428 | 3·435* | |
| Antheridiogen × time | 1 | 3971·059 | 215·056*** | |
| Target species × time | 2 | 46·756 | 2·532 n.s. | |
| Antheridiogen × time × target species | 2 | 68·493 | 3·709* | |
| Error | 288 | 18·465 |
The analysis of the percentage of male gametophytes included the two fixed factors antheridiogen-source species and antheridiogen-target species (D. aemula, D. oreades and D. corleyi). The analysis of gametophyte size included the three fixed factors antheridiogen absent or present (data from the three source species were pooled), antheridiogen-target species (D. aemula, D. oreades and D. corleyi), and time (12 or 18 weeks).
d.f., Degrees of freedom; m.s., mean square; n.s., non-significant.
*, P < 0·05; **, P < 0·01; ***, P < 0·001.