Table 3.
Number of pollen grain types and percentage of pollen viability observed in plants obtained in homoploid (diploid × diploid) and heteroploid (tetraploid × diploid) crosses. The data on species and on experimental crosses were derived from [4]. The species marked with an asterisk (*) reproduced by apomixis [4]. N represents the number of individuals/cross analyzed. Symbols: ♀—female recipient; ♂—male donor.
| N | Cross (#) ♀ × ♂ |
Viable Pollen with #colpi | Inviable Pollen with #colpi | Pollen Fertility |
N | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | (%) | |||
| Homoploid | (1) L. ovalifolium × L. ovalifolium | 0 | 0 | 2507 | 0 | 0 | 1 | 0 | 349 | 2 | 0 | 87.7 | 6 |
| (2) L. nydeggeri × L. ovalifolium | 0 | 0 | 2709 | 0 | 0 | 0 | 2 | 480 | 0 | 0 | 84.9 | 8 | |
| (3) L. nydeggeri × L. ovalifolium | 0 | 0 | 548 | 17 | 0 | 0 | 5 | 123 | 35 | 12 | 76.4 | 3 | |
| (4) L. ovalifolium × L. ovalifolium | 0 | 0 | 2386 | 0 | 0 | 0 | 1 | 556 | 0 | 0 | 81.1 | 7 | |
| (5) L. nydeggeri × L. ovalifolium | 1 | 1 | 2547 | 2 | 36 | 18 | 13 | 213 | 85 | 193 | 83.2 | 7 | |
| Heteroploid | (8) L. binervosum * × L. nydeggeri | 0 | 0 | 26 | 21 | 9 | 32 | 132 | 1150 | 250 | 27 | 3.4 | 4 |
| (11) L. binervosum * × L. nydeggeri | 0 | 0 | 0 | 0 | 0 | 8 | 31 | 317 | 91 | 0 | 0 | 6 | |
| (12) L. binervosum * × L. nydeggeri | 0 | 0 | 14 | 20 | 21 | 32 | 63 | 1593 | 442 | 53 | 2.5 | 4 | |
| (13) L. dodartii * × L. nydeggeri | 0 | 0 | 0 | 0 | 1 | 6 | 23 | 300 | 115 | 9 | 0.2 | 1 | |