Table 3.
Somatic chromosome number of BC2 genotypes from 5x × Tbr-4x and Tbr-4x × 5x crosses involving two pentaploid (2n = 5x = 60) BC1 hybrids (P3 and P5) and three tetraploid (2n = 4x = 48) varieties (Blondie, Carmine, and Tollocan)
| Cross combination | Genotypes analyzed, no. (%) | Genotypes with 48, 49, etc. somatic chromosomes, no. (%)
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | ||
| P5 × Tbr-4x | 32 | 3 | 3 | 6 | 2 | 4 | 7 | 5 | 2 | 0 | 0 | 0 | 0 | 0 |
| P3 × Tbr-4x | 12 | 0 | 0 | 0 | 2 | 1 | 2 | 4 | 1 | 1 | 0 | 0 | 0 | 1 |
| 5x × Tbr-4x | 44 | 3 | 3 | 6 | 4 | 5 | 9 | 9 | 3 | 1 | 0 | 0 | 0 | 1 |
| (100) | (6.8) | (6.8) | (13.6) | (9.1) | (11.5) | (20.4) | (20.4) | (6.8) | (2.3) | (0) | (0) | (0) | (2.3) | |
| Tbr-4x × P5 | 10 | 0 | 1 | 1 | 2 | 2 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Tbr-4x × P3 | 9 | 0 | 0 | 0 | 0 | 2 | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 1 |
| Tbr-4x × 5x | 19 | 0 | 1 | 1 | 2 | 4 | 6 | 2 | 0 | 2 | 0 | 0 | 0 | 1 |
| (100) | (0) | (5.3) | (5.3) | (10.5) | (21.0) | (31.6) | (10.5) | (0) | (10.5) | (0) | (0) | (0) | (5.2) | |
| Total | 63 | 3 | 4 | 7 | 6 | 9 | 15 | 11 | 3 | 3 | 0 | 0 | 0 | 2 |
| (100) | (4.8) | (6.3) | (11.1) | (9.5) | (14.3) | (23.8) | (17.5) | (4.8) | (4.8) | (0) | (0) | (0) | (3.2) | |