Denomination: 'Sunbelsuka'
Previously Proposed Denomination: 'Sunbelsu'
Trade name: Million Bells Royal Red
Botanical Name: Calibrachoa
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Breeder: Takeshi Kanaya, Suntory Flowers Limited, Shiga, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-03-15
Application Number: 05-4632
Grant of Rights Date: 2007-08-17
Certificate Number: 2848
Date rights surrendered: 2009-07-29

Variety Description

Variety used for comparison: 'Sunbelre' (Million Bells Red)

Summary: 'Sunbelsuka' is a calibrachoa variety which has flowers that differ slightly in main colour from the flowers of 'Sunbelre'. 'Sunbelsuka' has strongly to very strongly conspicuous veins on the inner side of the corolla tube, whereas 'Sunbelre' has moderately conspicuous veins.


PLANT: semi-upright to trailing growth habit, broad width
SHOOT: thin, medium length, no anthocyanin colouration
LEAF: short to medium length, narrow width, elliptic, narrow acute apex, medium green

SEPAL: medium length, lanceolate shape, no anthocyanin colouration
FLOWER: single, funnelform, small to medium diameter, medium to long pedicel
COROLLA: weak to medium lobing, red on upper side, purple red on lower side, red veins, veins weakly conspicuous, medium undulation of margin
COROLLA TUBE: short to medium length, yellow on inner side, strongly to very strongly conspicuous veins
ANTHER: yellowish white before dehiscence, yellow after dehiscence

Origin & Breeding History: 'Sunbelsuka' was developed from a cross between the female parent 'R10' and the male parent 'E20' which was conducted at Higashiomi-shi, Shiga-ken, Japan in April 2001. In September 2001, 50 seedlings were obtained and sown in pots in a greenhouse. One seedling was selected for its flower colour and growth habit. That seedling was propagated by cuttings and observed in a trial from April to September 2003. The botanical characteristics of that plant were then examined. As a result, it was concluded that the selected Calibrachoa plant is distinguishable from any other variety. The new variety was named 'Sunbelsuka'.

Tests & Trials: The tests and trials for 'Sunbelsuka' were conducted in a polyhouse during the summer of 2006 in St. Thomas, Ontario. The trial included a total of 20 plants of each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 25 cm baskets on April 20, 2006. Each basket contained 3 cuttings with a total of 7 baskets per variety. Observations and measurements were taken from 10 plants of each variety on July 5, 2006. All colour measurements were made using the RHS Colour Chart 2001.

Comparison tables for 'Sunbelsuka' with reference variety 'Sunbelre'

Main colour of corolla lobe (RHS)

  'Sunbelsuka' 'Sunbelre'
upper side 50A with tones of 51A 46C with tones of 53D
lower side 54C with tones of 54B 54C with tones of 54B

Colour of corolla tube (RHS)

  'Sunbelsuka' 'Sunbelre'
inner side 9A 14B

Click on image for larger view
Calibrachoa: 'Sunbelsuka' (left) with reference variety 'Sunbelre' (right)

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