Sunbel 8571


Denomination: 'Sunbel 8571'
Botanical Name: Calibrachoa
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Breeder: Takeshi Kanaya, Suntory Flowers Limited, Shiga, Japan
Yasuyuki Murakami, 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: 2013-04-19
Application Number: 13-7999
Grant of Rights Date: 2015-09-21
Certificate Number: 5119
Date rights surrendered: 2017-09-21

Variety Description

Variety used for comparison: 'Sunbelriki' (Million Bells Neon Yellow)

Summary: The plants of 'Sunbel 8571' are shorter than those of 'Sunbelriki'. The upper side of the leaf blade of 'Sunbel 8571' is medium green and shorter than that of 'Sunbelriki', which is dark green. The sepal of 'Sunbel 8571' is wider than that of 'Sunbelriki'. The corolla tube of 'Sunbel 8571' is yellow orange whereas it is yellow for 'Sunbelriki'.


PLANT: semi-upright growth habit

LEAF BLADE: broad acute and obtuse 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 yellow (RHS 12A-B) when newly open, yellow (RHS 9A-B) with light yellow (RHS 9C-D) towards the margin when fully open, and light yellow (RHS 10D) with yellow to light yellow (RHS 9B-C) veins when aged; very weak to weak conspicuousness of veins, no colour change at transition to corolla tube
COROLLA LOBE: rounded and truncate apex
COROLLA TUBE: inner side is yellow orange (RHS 13B)

Origin & Breeding History: 'Sunbel 8571' originated from a controlled cross conducted in July 2007 at the Omi Research and Development Center of Suntory Flowers Ltd. in Higashiomi-shi, Shiga, Japan. The cross involved the two proprietary varieties, '6985-2' as the female parent and '6961-2' as the male parent. Seeds from the pollination were germinated and grown to maturity. A single plant was selected in July 2010 based on its flower colour and growth habit. This selected plant was further propagated by cuttings and grown in pots in trials conducted between November 2010 and May 2012 to assess its botanical characteristics and confirm that the selection characteristics remained stable. It was later named 'Sunbel 8571'.

Tests & Trials: The comparative trial for 'Sunbel 8571' 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 variety. 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 June 24, 2014. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Sunbel 8571' with reference variety 'Sunbelriki'

Plant height (cm)

  'Sunbel 8571' 'Sunbelriki'
mean 19.8 22.8
std. deviation 1.48 0.84

Leaf length (cm)

  'Sunbel 8571' 'Sunbelriki'
mean 3.6 4.1
std. deviation 0.23 0.33

Sepal width (cm)

  'Sunbel 8571' 'Sunbelriki'
mean 0.35 0.2
std. deviation 0.06 0.0

Colour of corolla tube (RHS)

  'Sunbel 8571' 'Sunbelriki'
inner side 13B 9B

Click on image for larger view
Sunbel 8571
Calibrachoa: 'Sunbel 8571' (left) with reference variety 'Sunbelriki' (right)

Click on image for larger view
Sunbel 8571
Calibrachoa: 'Sunbel 8571' (left) with reference variety 'Sunbelriki' (right)

Click on image for larger view
Sunbel 8571
Calibrachoa: 'Sunbel 8571' (left) with reference variety 'Sunbelriki' (right)

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