Kakegawa S62


Denomination: 'Kakegawa S62'
Trade name: Colourburst Pro Red
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: 04-4032
Date Withdrawn: 2007-11-20

Variety Description

Variety used for comparison: 'USCALI28' (Superbells Red)

Summary: 'Kakegawa S62' has a more upright growth habit with shorter shoots than 'USCALI28'. The sepal of 'Kakegawa S62' is slightly wider than 'USCALI28'. 'Kakegawa S62' has a lighter dark purple red flower colour than 'USCALI28'. The veins on the inside of the corolla tube of 'Kakegawa S62' have stronger conspicuousness than 'USCALI28'. 'Kakegawa S62' has a purple red to dark pink red lower side of the corolla lobe while it is brown purple in 'USCALI28'.


PLANT: short height, upright growth habit
SHOOT: short, absent or very weak anthocyanin colouration

LEAF BLADE: shape ranging from elliptic to obovate, broad acute apex, medium green upper side, no variegation, no petiole

FLOWER: single type, absent anthocyanin colouration of sepals
COROLLA: weak to moderate lobing, rounded to truncate shaped apex of corolla lobe, dark purple red (RHS 46A/60A) upper side, purple red to dark pink red (RHS 59D/53D) lower side
COROLLA TUBE (inner side): yellow (RHS 9A), strong conspicuousness of veins

Origin & Breeding History: 'Kakegawa S62' originated from a cross made in November 1998 in Kakegawa, Japan. The female parent was calibrachoa 'Colorburst Cherry' and the male parent was the calibrachoa breeding line 97-1176. In February 1999, F1 seed was sown from this cross and planted outdoors. Three plants with red flower colour were selected and intercrossed to produce F2 generation seed. In August 1999, 100 lines of the F2 seed were grown outdoors. The F2 plants ranged from extra compact to mounding habit, as well as being either rose or red in flower colour. Two plants were selected for their red flower colour and extra compact habit and were vegetatively propagated. In February 2002, these two selections were evaluated in hanging pots in a greenhouse as well as under field conditions. One selection was chosen based on these evaluations and further evaluated from new vegetative plants in Salinas, California, USA during 2003.

Tests & Trials: Test and trials for 'Kakegawa S62' were conducted during the summer of 2005 at Oxford Station, Ontario. 15 plants of each variety were individually grown in 10 cm pots in a polyhouse. Plants were spaced 13 cm apart. Observations and measurements were taken on 10 plants of each variety. All colour observations were made using the RHS Colour Chart 2001.

Comparison tables for 'Kakegawa S62' with reference variety 'USCALI28'

Sepal width (mm)

  'Kakegawa S62' 'USCALI28'
mean 13.00 8.80
std. deviation 2.26 1.81

Corolla lobe colour (RHS)

  'Kakegawa S62' 'USCALI28'
upper side 46A/60A 53A/B
lower side 59D/53D 186A/B

Click on image for larger view
Kakegawa S62
Calibrachoa: 'Kakegawa S62' (left) with reference variety 'USCALI28' (right)

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