Table 2.
Production of hybrid seedlings between N. tabacum and two species of section Suaveolentes through ovule culture
| Cross combination | Days after pollination | No. of ovaries used | No. of ovules cultured | No. of hybrids obtained |
|---|---|---|---|---|
| ‘Red Russian’ × N. excelsior | 7 | 1 | 489 | 6 |
| 8 | 1 | 362 | 12 | |
| 9 | 1 | 512 | 34 | |
| 10 | 1 | 422 | 17 | |
| ‘Samsun NN’ × N. excelsior | 7 | 1 | 724 | 2 |
| 8 | 1 | 758 | 16 | |
| 9 | 1 | 387 | 42 | |
| 10 | 1 | 888 | 28 | |
| ‘Red Russian’ × N. megalosiphon | 7 | 1 | 504 | 1 |
| 8 | 1 | 438 | 1 | |
| 9 | 1 | 322 | 1 | |
| 10 | 1 | 418 | 6 | |
| ‘Samsun NN’ × N. megalosiphon | 7 | 1 | 358 | 0 |
| 8 | 1 | 944 | 2 | |
| 9 | 1 | 803 | 3 | |
| 10 | 2 | 1413 | 7 |