Sunsurf Kitatsu


Denomination: 'Sunsurf Kitatsu'
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: 2013-01-23
Application Number: 13-7865
Date Withdrawn: 2015-07-07

Variety Description

Variety used for comparison: 'Sunsurf Kiusa' (Surfinia Trailing Yellow)

Summary: The plants of 'Sunsurf Kitatsu' are taller than those of 'Sunsurf Kiusa'. The leaf blade of 'Sunsurf Kitatsu' is ovate and shorter than that of 'Sunsurf Kiusa' which is elliptic. The pedicel of 'Sunsurf Kitatsu' is longer than that of 'Sunsurf Kiusa'. The sepal of 'Sunsurf Kitatsu' is shorter than that of 'Sunsurf Kiusa'. The outer side of the corolla tube of 'Sunsurf Kitatsu' is light yellow while it is yellow green for 'Sunsurf Kiusa'.


PLANT: upright

LEAF: ovate, narrow acute apex, no variegation, medium green, absent or weak blistering

PEDICEL: absent or very weak intensity of anthocyanin colouration
FLOWER: single, salverform, medium degree of lobing, medium incisions of margin, strong degree of undulation, medium conspicuousness of veins, yellow veins, inner side is light yellow (RHS 4D)
NEWLY OPENED FLOWER: inner side is yellow green to light yellow (RHS 4C-D)
AGED FLOWER: inner side is light yellow (whiter than RHS 4D)
COROLLA LOBE: cuspidate and emarginate apex
COROLLA TUBE: inner side is yellow (RHS 7A), weak conspicuousness of veins on inner side, yellow (RHS 7A and 7B) veins, outer side is light yellow (RHS 10C)
ANTHER: yellowish before dehiscence

Origin & Breeding History: 'Sunsurf Kitatsu' originated from a controlled pollination between the female parent 'Px1634-02' and the male parent 'Pf919-02' in July 2007 at the Omi Research and Development Center of Suntory Flowers Ltd. in Higashiomi-shi, Shiga, Japan. 'Sunsurf Kitatsu' was selected in June 2008 based on its growth habit and flower colour.

Tests & Trials: The comparative trial for 'Sunsurf Kitatsu' was conducted in a polyhouse during the spring of 2014 at BioFlora Inc. 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 15.2 cm pots on April 11, 2014. Observations and measurements were taken from 10 plants of each variety on May 27, 2014. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

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

Plant height (cm)

  'Sunsurf Kitatsu' 'Sunsurf Kiusa'
mean 15.9 12.9
std. deviation 1.19 1.46

Leaf length (cm)

  'Sunsurf Kitatsu' 'Sunsurf Kiusa'
mean 3.4 4.3
std. deviation 0.24 0.43

Pedicel length (cm)

  'Sunsurf Kitatsu' 'Sunsurf Kiusa'
mean 3.1 2.1
std. deviation 0.39 0.42

Sepal length (cm)

  'Sunsurf Kitatsu' 'Sunsurf Kiusa'
mean 1.0 1.8
std. deviation 0.08 0.15

Colour of corolla tube (RHS)

  'Sunsurf Kitatsu' 'Sunsurf Kiusa'
outer side 10C duller than 154D

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

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

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

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