Denomination: 'Sundarose'
Trade name: Surfinia Summer Double Rose
Botanical Name: Petunia ×hybrida
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Breeder: Nobutaka Akai, Miyazaki, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2012-03-12
Application Number: 12-7556
Grant of Rights Date: 2014-05-23
Certificate Number: 4800
Grant of Rights Termination Date: 2032-05-23

Variety Description

Variety used for comparison: 'AK101'

Summary: The flowers of 'Sundarose' are larger than those of 'AK101'. The veins on the flowers of 'Sundarose' are yellow green whereas those on 'AK101' are red purple. The corolla tube of 'Sundarose' is longer than that of 'AK101'. The inner side of the corolla tube of 'Sundarose' has weak conspicuousness of yellow green veins whereas that of 'AK101' has medium conspicuousness of dark violet to violet veins.


PLANT: mounding growth habit, thin to medium shoot thickness on lower third

LEAF BLADE: ovate, narrow acute apex, no variegation, medium green on upper side, no blistering

SEPAL: linear, no anthocyanin colouration
FLOWER: double, funnelform, yellow green veins
COROLLA LOBE: one colour on upper side, upper side purple (RHS N74A-B), absent or very weak conspicuousness of veins on upper side, medium to strong undulation of margin
COROLLA TUBE: inner side white (RHS 155B-C) with yellow green (RHS 150B-C) veins, weak conspicuousness of veins on inner side
ANTHERS: yellowish white before dehiscence

Origin & Breeding History: 'Sundarose' originated as a controlled pollination conducted in an isolated area in June 2006 between two unnamed proprietary Petunia selections. Seeds from the cross were germinated and grown to maturity. One plant was selected by the breeder in May 2007, at Miyazaki-shi, Miyazaki, Japan. The new plant was propagated by cuttings and grown in pots. A trial was carried out from April 2007 to October 2008 where the botanical characteristics of the variety were examined. After determining that the new variety was distinguishable from any other varieties, and uniform and stable in its characteristics, the new variety was named 'Sundarose'.

Tests & Trials: Trials for 'Sundarose' were conducted in a polyhouse during the spring of 2013 in St. Thomas, Ontario. The trial included a total of 20 plants each of the candidate and reference variety. All plants were grown from rooted cuttings and transplanted into 15 cm pots on April 10, 2013. Observations and measurements were taken from 10 plants of each variety on May 14, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Sundarose' with reference variety 'AK101'

Flower diameter (cm)

  'Sundarose' 'AK101'
mean 4.9 3.9
std. deviation 0.13 0.25

Corolla tube length (cm)

  'Sundarose' 'AK101'
mean 2.0 1.6
std. deviation 0.08 0.15

Colour of corolla tube (RHS)

  'Sundarose' 'AK101'
inner side 155B-C with veins close to 150B-C N155B with veins close to N77C-D

Click on image for larger view
Petunia: 'Sundarose' (left) with reference variety 'AK101' (right)

Click on image for larger view
Petunia: 'Sundarose' (left) with reference variety 'AK101' (right)

Click on image for larger view
Petunia: 'Sundarose' (left) with reference variety 'AK101' (right)

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