Table 1.
Chromosomal constitution in the analysed amphiploids (assessed by genomic in situ hybridisation, GISH) and their pollen viability
| Aegilops-Secale amphiploids | 2n | Number of chromosomes | Pollen viability (%) | |
|---|---|---|---|---|
| Aegilops spp. | S. cereale | |||
| Ae. kotschyi (UUSS) × S. cereale (RR) | 42–44 | 28 [14U + 14S] | 14–16 [R] | 65.7 |
| Ae. variabilis (UUSS) × S. cereale (RR) | 40–42 | 28 [14U + 14S] | 12, 14 [R] | 70.6 |
| Ae. biuncialis (line 1) (UUMM) × S. cereale (RR) | 42 | 28 [14U + 14M] | 14 [R] | 75.4 |
| Ae. biuncialis (line 2) (UMM) × S. cereale (RR) | 42 | 28 [14U + 14M] | 14 [R] | 24.4 |
| Ae. ovata (UUMM) × S. cereale (RR) | 42 | 28 [14*U + 14M] | 14* [R] | 64.4 |
| Ae. tauschii (DD) × S. cereale (RR) | 28 | 14 [D] | 14 [R] | 42.1 |
*In one of the Ae. ovata × S. cereale amphiploids (plant 3/4), an introgression of Ae. ovata chromatin in the telomeric region of rye chromosomes was observed