Sunsurf Kiusa


Denomination: 'Sunsurf Kiusa'
Trade name: Surfinia Trailing Yellow
Botanical Name: Petunia ×hybrida
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: 2012-03-12
Application Number: 12-7560
Grant of Rights Date: 2014-05-23
Certificate Number: 4804
Date rights surrendered: 2016-05-23

Variety Description

Variety used for comparison: 'Sunpatiki' (Surfinia Patio Yellow)

Summary: The plants of 'Sunsurf Kiusa' are shorter than those of 'Sunpatiki'. The leaves, petioles, sepals and corolla tubes of 'Sunsurf Kiusa' are longer than those of 'Sunpatiki'. The flowers of 'Sunsurf Kiusa' are larger than those of 'Sunpatiki'.


PLANT: upright to creeping growth habit, medium to thick shoots on lower third
LEAF BLADE: elliptic, narrow acute apex, no variegation, light to medium green on upper side, no blistering

SEPAL: linear, no anthocyanin colouration
FLOWER: single, funnelform, yellow veins
COROLLA LOBE: one colour on upper side, upper side white (RHS 155C) with yellow (RHS 5C) veins, weak to medium conspicuousness of veins on upper side, medium undulation of margin
COROLLA TUBE: inner side yellow (RHS 5B) with yellow green (RHS 154A-B) veins, medium conspicuousness of veins on inner side
ANTHERS: yellowish white before dehiscence

Origin & Breeding History: 'Sunsurf Kiusa' originated as a controlled pollination conducted in an isolated area in March 2007 between the female parent variety 'Px1623-02', a proprietary selection, and the male parent 'B173-1', a proprietary selection. Seeds from the cross were germinated and grown to maturity. One plant was selected by the breeder in March 2008 at Higashiomi-shi, Shiga, Japan, based on growth habit, flower size and flower colour. The new plant was propagated by cuttings and grown in pots. A trial was carried out from April to September 2009 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 'Sunsurf Kiusa'.

Tests & Trials: Trials for 'Sunsurf Kiusa' 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 12, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Sunsurf Kiusa' with reference variety 'Sunpatiki'

Plant height (cm)

  'Sunsurf Kiusa' 'Sunpatiki'
mean 11.5 14.4
std. deviation 0.66 0.68

Leaf length (cm)

  'Sunsurf Kiusa' 'Sunpatiki'
mean 4.5 3.7
std. deviation 0.22 0.34

Petiole length (cm)

  'Sunsurf Kiusa' 'Sunpatiki'
mean 0.8 0.4
std. deviation 0.16 0.06

Sepal length (cm)

  'Sunsurf Kiusa' 'Sunpatiki'
mean 2.2 1.3
std. deviation 0.15 0.08

Flower diameter (cm)

  'Sunsurf Kiusa' 'Sunpatiki'
mean 6.5 5.3
std. deviation 0.07 0.14

Corolla tube length (cm)

  'Sunsurf Kiusa' 'Sunpatiki'
mean 3.2 2.9
std. deviation 0.06 0.17

Click on image for larger view
Sunsurf Kiusa
Petunia: 'Sunsurf Kiusa' (left) with reference variety 'Sunpatiki' (right)

Click on image for larger view
Sunsurf Kiusa
Petunia: 'Sunsurf Kiusa' (left) with reference variety 'Sunpatiki' (right)

Click on image for larger view
Sunsurf Kiusa
Petunia: 'Sunsurf Kiusa' (left) with reference variety 'Sunpatiki' (right)

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