Denomination: 'Sunsurfcopasaku'
Botanical Name: Petunia ×hybrida
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Breeder: Kazunari Iwaki, Shiga, Japan
Takuro Ishihara, Tokyo, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2006-03-31
Application Number: 06-5413
Date Withdrawn: 2008-09-18

Variety Description

Varieties used for comparison: 'USTUNI7501' (Supertunia Mini Pastel Pink Imp.) and 'Sunsurfmicshipho' (Surfinia Patio Chiffon)

Summary: 'Sunsurfcopasaku' is a petunia variety which has upright, compact plants, compared with the reference variety 'USTUNI7501', which has a semi-upright to creeping plant growth habit. The flowers of 'Sunsurfcopasaku' are smaller in diameter than the flowers of both reference varieties. 'Sunsurfcopasaku' also differs in main flower colour from both 'USTUNI7501' and 'Sunsurfmicshipho'.


PLANT: upright and compact growth habit, short to medium height, narrow width

SHOOT: thin to medium thickness, short, no anthocyanin colouration

LEAF: short to medium length, medium width, ovate to elliptic, narrow acute apex, no variegation, light to medium green upper side, no blistering, short to medium length petiole

SEPAL: short to medium length, very narrow, linear, no anthocyanin colouration

FLOWER: short to medium length pedicel, single, very small to small diameter, salverform
COROLLA: weak to medium lobing, blue pink upper side, violet to pink lower side, veins pink green and very weakly conspicuous, weak to medium undulation of margin
COROLLA TUBE: short to medium length, white on inner side, veins weakly conspicuous
ANTHER: yellowish white before and after pollen dehiscence

Origin & Breeding History: The variety 'Sunsurfcopasaku' originated from a cross between the variety 'Fantasy Pink' as the female parent and the hybrid variety 'P01-531' as the male parent. The cross was conducted in March 2002, at Higashiomi-shi, Shiga-ken, Japan. In April 2003, 80 seedlings were obtained from the cross. The seedlings were grown in pots in a glasshouse and evaluated. In August 2003, one seedling was selected for its growth habit, flower size and colour. The selected plant was propagated by cuttings and grown in pots, and then evaluated in a trial from April to September 2004. The plants were found to be distinct, uniform and stable in their characteristics and the new variety was named 'Sunsurfcopasaku'.

Tests & Trials: The trials for 'Sunsurfcopasaku' were conducted during the spring of 2007, in a polyhouse in St. Thomas, Ontario. The trials consisted of a total of 15 plants of the candidate and reference varieties. All plants were grown from rooted cuttings planted into 15cm pots on April 24, 2007. Observations and measurements were taken from 10 plants of each variety on June 5, 2007. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour chart.

Comparison tables for 'Sunsurfcopasaku' with reference varieties 'USTUNI7501' and 'Sunsurfmicshipho'

Plant width (cm)

  'Sunsurfcopasaku' 'USTUNI7501' 'Sunsurfmicshipho'
mean 27.8 50.7 29.5

Leaf length (cm)

  'Sunsurfcopasaku' 'USTUNI7501' 'Sunsurfmicshipho'
mean 4.6 5.8 3.5
std. deviation 0.25 0.81 0.34

Diameter of corolla (cm)

  'Sunsurfcopasaku' 'USTUNI7501' 'Sunsurfmicshipho'
mean 3.6 5.8 4.6
std. deviation 0.19 0.31 0.25

Main colour of corolla (RHS)

  'Sunsurfcopasaku' 'USTUNI7501' 'Sunsurfmicshipho'
upper side N74C (base 72C) pinker than N74C-D 75D (base pinker than 75B)
lower side pinker than 77D 75B-D pinker than 75C

Click on image for larger view
Petunia: 'Sunsurfcopasaku' (left) with reference varieties 'USTUNI7501' (centre) and 'Sunsurfmicshipho' (right)

Click on image for larger view
Petunia: 'Sunsurfcopasaku' (left) with reference varieties 'USTUNI7501' (centre) and 'Sunsurfmicshipho' (right)

Click on image for larger view
Petunia: 'Sunsurfcopasaku' (left) with reference varieties 'USTUNI7501' (centre) and 'Sunsurfmicshipho' (right)

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