Table 1.
Time course of pollen germination and pollen tube elongation after self-pollination in Alstroemeria
| Time after pollination | No. of ovaries examined | Av. no. of pollen germinations on a stigma | Presence of pollen tube in the pistil | Av. no. of ovules observed per ovary | Frequency of pollen tube entry into ovules (%) |
|---|---|---|---|---|---|
| 5 min | 2 | 0.0 | –* | 21·0 | 0 |
| 10 min | 2 | 0·0 | – | 22·5 | 0 |
| 30 min | 2 | 0·0 | – | 18·0 | 0 |
| 1 h | 2 | 15·0 | Stigma | 17·5 | 0 |
| 3 h | 2 | 118·5 | Stigma | 23·5 | 0 |
| 6 h | 6 | 320·8 | Style | 23·2 | 0 |
| 12 h | 3 | 529·0 | Style | 25·0 | 0 |
| 18 h | 3 | 355·7 | Ovary | 25·3 | 0 |
| 24 h | 5 | 491·8 | Ovary | 19·2 | 80 |
| 30 h | 3 | 475·3 | Ovary | 23·7 | 92 |
* No pollen tube was visible.