Kakegawa S65


Denomination: 'Kakegawa S65'
Trade name: Colorburst Pro White
Botanical Name: Calibrachoa
Applicant/Holder: Sakata Seed Corporation
2-7-1 Nakamachidai
Breeder: Sakata Seed Corporation, Yokohama, Japan
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2004-02-11
Application Number: 04-4035
Grant of Rights Date: 2007-01-24
Certificate Number: 2679
Date rights surrendered: 2009-03-06

Variety Description

Variety used for comparison: 'Kakegawa S24' (Liricashower Pure White)

Summary: 'Kakegawa S65' has shorter shoots, shorter leaves, shorter sepals and smaller corolla diameter than 'Kakegawa S24'. The inner side of the corolla tube is light yellow for 'Kakegawa S65' while it is yellow green for 'Kakegawa S24'.


'Kakegawa S65' is a Calibrachoa variety with upright to creeping plant growth habit. The plants are short and the shoots are short to medium in length with absent to very weak anthocyanin colouration. The shape of the leaf blade ranges from elliptic to obovate with an obtuse apex. The upper side of the leaf blade is medium green and there is no variegation. There is no petiole.

The flowers produced by 'Kakegawa S65' are single type. Anthocyanin colouration of the sepals is absent. The degree of lobing of the corolla is weak. The inner and outer sides of the corolla are white. The lobes of the corolla have a truncate shaped apex. The inner side of the corolla tube is light yellow and conspicuousness of the veins within the corolla tube is moderate.

Origin & Breeding History: 'Kakegawa S65' originated from a hybridization conducted in November of 1998 in Kakegawa, Japan. The female parent was variety 'Kakegawa S24' (Liricashower Pure White) and the male parent was the breeding line designated '97-1176'. In February of 1999, F1 seed was sown and the resulting seedlings were transplanted outdoors. Five plants with good rose flower colour were selected and intercrossed to produce F2 generation seed. In August of 1999, seed from the F2 generation were sown and later transplanted outdoors. Two plants were selected for vegetative propagation based on their white flowers and extra compact plant growth habit. In August of 2002, these selections were planted in 9 cm hanging pots for evaluation in greenhouse and open field trials. Using new vegetatively propagated plants, one selection was further evaluated in Salinas, California, USA during 2003. This selection was named 'Kakegawa S65'.

Tests & Trials: The test and trial for 'Kakegawa S65' was conducted in a polyhouse at Variety Rights Management in Oxford Station, Ontario during the summer of 2005. The trial included 15 plants of each variety grown in 10 cm pots. The plants were spaced 13 cm apart. All colour characteristics were determined using the 2001 Royal Horticultural Society (RHS) colour chart and measured characteristics were based on ten measurements.

Comparison tables for 'Kakegawa S65' with reference variety 'Kakegawa S24'

Leaf blade length (cm)

  'Kakegawa S65' 'Kakegawa S24'
mean 2.45 3.43
std. deviation 0.40 0.37

Sepal length (mm)

  'Kakegawa S65' 'Kakegawa S24'
mean 11.30 14.67
std. deviation 1.16 0.87

Corolla diameter (mm)

  'Kakegawa S65' 'Kakegawa S24'
mean 22.00 32.30
std. deviation 2.79 2.87

Corolla colour (RHS)

  'Kakegawa S65' 'Kakegawa S24'
inner side 155C 155C
outer side 155D 155D

Colour of corolla tube (RHS)

  'Kakegawa S65' 'Kakegawa S24'
inner side 8B 154B

Click on image for larger view
Kakegawa S65
Calibrachoa: 'Kakegawa S65' (left) with reference variety 'Kakegawa S24' (right)

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