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Bokrasopin

Weigela

Denomination: 'Bokrasopin'
Trade name: Sonic Bloom Pink
Botanical Name: Weigela
Applicant/Holder: Spring Meadow Nursery, Inc.
12601 120th Avenue
Grand Haven, Michigan
49417
United States of America
Breeder: Kees Jan Kraan, Papenveer, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-317-7511
Application Date: 2011-08-19
Application Number: 11-7359
Grant of Rights Date: 2013-08-19
Certificate Number: 4597
Grant of Rights Termination Date: 2031-08-19

Variety Description

Varieties used for comparison: 'Polka' and 'Red Prince'

Summary: The leaf blade of 'Bokrasopin' has weak to medium undulation of the margin while the leaf of 'Red Prince' has strong undulation. The flower bud of 'Bokrasopin' is brown purple with dark pink red on the tube while the flower bud of 'Polka' is blue pink to light blue pink with brown purple on the tube and the flower bud of 'Red Prince' is dark purple red to dark pink red with dark pink red on the tube. The main colour on the inner side of the corolla of 'Bokrasopin' is blue pink while the inner side of the corolla of 'Polka' is violet with darker violet at the margin and the inner side of the corolla of 'Red Prince' is dark pink red. The outer side of the corolla of 'Bokrasopin' is purple red to dark pink red while the outer side of the corolla of 'Polka' is violet with brown purple and white at the base and the outer side of the corolla of 'Red Prince' is dark purple red. The corolla of 'Bokrasopin' is wider and longer than the corolla of 'Red Prince'. The ovary of 'Bokrasopin' has absent or very sparse pubescence while the ovary of 'Red Prince' has medium pubescence. The ovary of 'Bokrasopin' is shorter than the ovary of 'Red Prince'.

Description:

PLANT: erect growth habit, red brown one year old shoot

LEAF: elliptic, many incisions on margin, weak to medium undulation, upper side medium green, no variegation, absent or very weak leaf blistering, dense pubescence on lower side along veins

INFLORESCENCE: compound panicle, flowers very early with a strong presence of secondary flowering in the fall
FLOWER BUD: brown purple (RHS 185B) with dark pink red (RHS 53C-D) on tube
COROLLA: single coloured, inner side blue pink (RHS N66C-D) with blue pink (RHS 67B) tones, aging to purple red (RHS N57C), outer side purple red (RHS 58C) and dark pink red (RHS 53C), medium size, funnel shape, lobes with rounded apex
SEPAL: sparse pubescence, green with strong red speckling
OVARY: absent or very sparse pubescence
PISTIL: same length as corolla.

Origin & Breeding History: The variety 'Bokrasopin' originated from an open pollination that occurred in the summer of 2000 in Boskoop, Netherlands. The female parent was a proprietary seedling designated 93118 and the male parent was an unnamed proprietary seedling with pink flowers. In June 2007, the new variety was selected as a single seedling based on criteria for compact plant habit, abundant flowers, re-blooming throughout the summer, red-pink flower buds and light pink flowers. Asexual reproduction of the new variety was first conducted by softwood cuttings in the summer of 2007 in Boskoop, Netherlands.

Tests & Trials: Trials for 'Bokrasopin' were conducted in an outdoor container trial during the spring and summer of 2012 in St. Thomas, Ontario. The trial included a total of 15 plants of the candidate variety and 10 plants of the reference variety. Plants were grown from 11 cm rooted liners and planted into 8.8 litre containers on July 7, 2011. The plants were overwintered in a polyhouse and moved outdoors in late April 2012. Early observations and measurements on the flowers and buds were taken from 10 plants of each variety on March 30, 2012. Plants were pruned on May 10, 2012. All observations and measurements were taken from 10 plants of 'Bokrasopin' and 'Red Prince' on July 5, 2012 and on 'Polka' on July 9, 2012. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Bokrasopin' with reference varieties 'Polka' and 'Red Prince'

Colour of flower bud (RHS)

  'Bokrasopin' 'Polka' 'Red Prince'
main 185B 63C-D 53B-C
tube 53C-D 184D 53C-D

Colour of corolla (RHS)

  'Bokrasopin' 'Polka' 'Red Prince'
inner side N66C-D, tones of 67B, aging to N57C 75C with 75A at margin, aging to NN155C & 69D 53C-D
outer side 58C, 53C 75B with 184D, N155C at base 53A-B

Corolla diameter (cm)

  'Bokrasopin' 'Polka' 'Red Prince'
mean 3.5 3.4 2.5
std. deviation 0.14 0.27 0.40

Corolla length (cm)

  'Bokrasopin' 'Polka' 'Red Prince'
mean 3.8 3.4 4.5
std. deviation 0.19 0.50 0.27

Ovary length (cm)

  'Bokrasopin' 'Polka' 'Red Prince'
mean 1.6 1.8 2.4
std. deviation 0.29 0.46 0.11

Click on image for larger view
Bokrasopin
Weigela: 'Bokrasopin' (left) with reference varieties 'Polka' (centre) and 'Red Prince' (right)

Click on image for larger view
Bokrasopin
Weigela: 'Bokrasopin' (left) with reference varieties 'Polka' (centre) and 'Red Prince' (right)

Click on image for larger view
Bokrasopin
Weigela: 'Bokrasopin' (left) with reference varieties 'Polka' (centre) and 'Red Prince' (right)

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