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<p>Research was carried out on the germination of seeds obtained from crossings between the cultivars of red raspberry (<italic>Rubus idaeus</italic> L.) ‘Sokolica’, ‘Willamette’, ‘Veten’, ‘Canby’ and ‘Glen Ample’ depending on the age of the seeds. The crossings were performed in the winter–spring of 2015–2018 in a heated greenhouse. The obtained seeds were stored dry in paper bags at a temperature of 4–5 °C. In January 2019, seeds were scarified and then cold stratified for 50 days and seeded in pots in a greenhouse. The seedling emergence was assessed 60 days after sowing. The seeds produced in 2015 had the lowest germination percentage (14% on average for all combinations of crosses), while the seeds produced in 2018 had a germination rate of 44.9%. Significant differences were also observed in the emergence of seedlings from different combinations. On average, the fewest seedlings were obtained from the combination ‘Glen Ample’ × ‘Willamette’ and the most from ‘Sokolica’ × ‘Willamette’.</p>
</abstract>

Research was carried out on the germination of seeds obtained from crossings between the cultivars of red raspberry (Rubus idaeus L.) ‘Sokolica’, ‘Willamette’, ‘Veten’, ‘Canby’ and ‘Glen Ample’ depending on the age of the seeds. The crossings were performed in the winter–spring of 2015–2018 in a heated greenhouse. The obtained seeds were stored dry in paper bags at a temperature of 4–5 °C. In January 2019, seeds were scarified and then cold stratified for 50 days and seeded in pots in a greenhouse. The seedling emergence was assessed 60 days after sowing. The seeds produced in 2015 had the lowest germination percentage (14% on average for all combinations of crosses), while the seeds produced in 2018 had a germination rate of 44.9%. Significant differences were also observed in the emergence of seedlings from different combinations. On average, the fewest seedlings were obtained from the combination ‘Glen Ample’ × ‘Willamette’ and the most from ‘Sokolica’ × ‘Willamette’.

Seed Germination of Raspberry (<italic>Rubus idaeus</italic> L.) Depending on the Age of Seeds and Hybridization Partners

Journal of Horticultural Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

Seed Germination of Raspberry ( L.) Depending on the Age of Seeds and Hybridization Partners

Research was carried out on the germination of seeds obtained from crossings between the cultivars of red raspberry (Rubus idaeus L.) ‘Sokolica’, ‘Willamette’,...

Cultivar name	Country of origin	Pedigree	Ripening time	Productivity	Fruit		Susceptibility to RBDV	Spines on shoots
Cultivar name	Country of origin	Pedigree	Ripening time	Productivity	size	color	Susceptibility to RBDV	Spines on shoots
‘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	+

Seed age (year of crossing)	Pedigree of seeds (crossing combinations of cultivars)
Seed age (year of crossing)	‘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

Seed Germination of Raspberry (Rubus idaeus L.) Depending on the Age of Seeds and Hybridization Partners

Article Category: Short communication

Published Online: Jul 04, 2022

Page range: 61 - 66

Received: Apr 01, 2022

Accepted: May 01, 2022

DOI: https://doi.org/10.2478/johr-2022-0007

Keywords
age of seeds, raspberry breeding, seed germination, combinations of crosses

© 2022 Agnieszka Masny et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Short description of the cultivars used in the crossing program

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 Germination of Raspberry (Rubus idaeus L.) Depending on the Age of Seeds and Hybridization Partners

Article Category: Short communication

Published Online: Jul 04, 2022

Page range: 61 - 66

Received: Apr 01, 2022

Accepted: May 01, 2022

DOI: https://doi.org/10.2478/johr-2022-0007

Keywordsage of seeds, raspberry breeding, seed germination, combinations of crosses

© 2022 Agnieszka Masny et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Short description of the cultivars used in the crossing program

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)

Keywords
age of seeds, raspberry breeding, seed germination, combinations of crosses