Sunbelku 3382


Denomination: 'Sunbelku 3382'
Trade name: Million Bells Trailing White
Botanical Name: Calibrachoa
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Breeder: Yasuko Isobe, 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: 2013-01-23
Application Number: 13-7863
Grant of Rights Date: 2015-09-21
Certificate Number: 5120
Grant of Rights Termination Date: 2035-09-21

Variety Description

Varieties used for comparison: 'Suncalho' (Million Bells White) and 'USCALI386-2' (Superbells White)

Summary: The plants of 'Sunbelku 3382' are shorter than those of 'Suncalho'. The leaf blade of 'Sunbelku 3382' is smaller than that of 'Suncalho'. The sepal of 'Sunbelku 3382' is smaller than that of both reference varieties. The corolla of 'Sunbelku 3382' is narrower than the corolla of 'Suncalho'.


PLANT: semi-upright to spreading growth habit

LEAF BLADE: broad acute apex, no variegation, medium green on upper side

PEDICEL: absent or very weak intensity of anthocyanin colouration
FLOWER: single type, medium degree of lobing
COROLLA: inner side is white (RHS NN155D), absent or very weak conspicuousness of veins, no colour change at transition to corolla tube
COROLLA LOBE: truncate apex
COROLLA TUBE: inner side is yellow to yellow green (RHS 7A-B, as light as RHS 3C-D)

Origin & Breeding History: 'Sunbelku 3382' originated from a controlled cross conducted in June 2007 at the Omi Research and Development Center of Suntory Flowers Ltd. in Higashiomi-shi, Shiga, Japan. The cross involved the two proprietary varieties, '8138' as the female parent and '4055-12' as the male parent. Seeds from the pollination were germinated and grown to maturity. A single plant was selected in July 2008 based on its flower colour and growth habit. The selected plant was further propagated by cuttings and grown in pots in trials conducted from April to September 2009 to assess its botanical characteristics and confirm that its selection characteristics remained stable. It was later named 'Sunbelku 3382'.

Tests & Trials: The comparative trial for 'Sunbelku 3382' was conducted as an outdoor irrigated hanging basket trial during the summer of 2014 at BioFlora Inc. in St. Thomas, Ontario. The trial included 20 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 30 cm hanging baskets on April 18, 2014 and transferred outside on June 10, 2014. Each basket contained 4 cuttings with a total of 5 baskets per variety. Observations and measurements were taken from 10 plants or parts of plants of each variety on July 9, 2014. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Sunbelku 3382' with reference varieties 'Suncalho' and 'USCALI386-2'

Plant height (cm)

  'Sunbelku 3382' 'Suncalho' 'USCALI386-2'
mean 16.2 19.4 16.6
std. deviation 1.05 1.14 1.14

Leaf blade length (cm)

  'Sunbelku 3382' 'Suncalho' 'USCALI386-2'
mean 3.3 4.2 3.0
std. deviation 0.21 0.37 0.30

Leaf blade width (cm)

  'Sunbelku 3382' 'Suncalho' 'USCALI386-2'
mean 1.3 1.8 0.9
std. deviation 0.11 0.08 0.11

Sepal length (cm)

  'Sunbelku 3382' 'Suncalho' 'USCALI386-2'
mean 0.9 1.2 1.2
std. deviation 0.06 0.14 0.10

Sepal width (cm)

  'Sunbelku 3382' 'Suncalho' 'USCALI386-2'
mean 0.2 0.4 0.3
std. deviation 0.05 0.03 0.05

Corolla width (cm)

  'Sunbelku 3382' 'Suncalho' 'USCALI386-2'
mean 3.1 4.1 3.4
std. deviation 0.20 0.17 0.08

Click on image for larger view
Sunbelku 3382
Calibrachoa: 'Sunbelku 3382' (left) with reference varieties 'Suncalho' (centre) and 'USCALI386-2' (right)

Click on image for larger view
Sunbelku 3382
Calibrachoa: 'Sunbelku 3382' (left) with reference varieties 'Suncalho' (centre) and 'USCALI386-2' (right)

Click on image for larger view
Sunbelku 3382
Calibrachoa: 'Sunbelku 3382' (left) with reference varieties 'Suncalho' (centre) and 'USCALI386-2' (right)

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