Short description of the cultivars used in the crossing program
| Cultivar name | Country of origin | Pedigree | Ripening time | Productivity | Fruit | Susceptibility to RBDV | Spines on shoots | |
|---|---|---|---|---|---|---|---|---|
| size | color | |||||||
| ‘Canby’ | USA | ‘Viking’ × ‘Lloyd George’ | early | high | medium | intense red | susceptible | + |
| ‘Glen Ample’ | UK | SCRI 7326E1 × SCRI 7412H16 | medium early | high | large | bright red | low susceptibility | − |
| ‘Sokolica’ | POL | 96131 × 96221 | medium early | high | large | bright red | susceptible | + |
| ‘Veten’ | NOR | ‘Asker’ × ‘Lloyd George’ | early | medium to high | medium to large | red and dark red | low susceptibility | + |
| ‘Willamette’ | USA | ‘Lloyd George’ × ‘Newburgh’ | late | high | large | intense red | resistant | + |
Influence of age and pedigree of the red raspberry seeds on the ability for germination within 60 days from the date of sowing the seeds (Skierniewice 2019)
| Seed age (year of crossing) | Pedigree of seeds (crossing combinations of cultivars) | |||||
|---|---|---|---|---|---|---|
| ‘Sokolica’ × ‘Sokolica’ | ‘Sokolica’ × ‘Willamette’ | ‘Sokolica’ × ‘Veten’ | ‘Canby’ × ‘Sokolica’ | ‘Glen Ample’ × ‘Willamette’ | Average for years | |
| 4 years (2015) | 3.0 a* | 17.0 b–d | 7.5 ab | 25.0 c–f | 17.5 b–d | 14.0 a |
| 3 years (2016) | 50.5 i | 49.0 hi | 9.0 ab | 27.5 c–g | 8.0 ab | 28.8 b |
| 2 years (2017) | 42.0 f–i | 51.0 i | 50.0 i | 19.5 b–e | 13.0 bc | 35.1 c |
| 1 year (2018) | 39.5 f–i | 72.5 j | 45.0 g–i | 36.0 e–i | 31.5 d–h | 44.9 d |
| Average for combination | 33.8 b | 47.4 c | 27.9 b | 27.0 b | 17.5 a | |