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Mixed model ANOVA for pollen-tube growth rate in vivo (mm 0·5 h−1)* when pollen from a donor (random effect) was used in crosses with itself or with up to three unrelated plants (pollination type, fixed effect) in Collinsia heterophylla
| Source of variation | d.f. | F | P |
|---|---|---|---|
| Pollination type | 1 | 0·007 | 0·94 |
| Donor | 16 | 0·635 | 0·81 |
| Pollination type × donor | 16 | 1·42 | 0·21 |
| Error | 25 |
* Estimated as the difference in pollen tube length between 2 h and 1·5 h.
