Kakegawa S30


Denomination: 'Kakegawa S30'
Trade name: Supertunia White
Botanical Name: Petunia ×hybrida
Applicant/Holder: Sakata Seed Corporation
2-7-1 Nakamachidai
Breeder: Masao Bessho, Shizuoka, 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: 2000-05-23
Application Number: 00-2282
Grant of Rights Date: 2001-10-01
Certificate Number: 1041
Date rights revoked: 2013-02-01

Variety Description

Variety used for comparison: 'Pink Wave'

Summary: 'Kakegawa S30' is a petunia variety which has smaller sepals and shorter peduncles than 'Pink Wave'. The flowers of 'Kakegawa S30' are white while those of 'Pink Wave' are pink.


'Kakegawa S30' is a petunia variety with a pendulous growth habit and moderate branching. The leaves of 'Kakegawa S30' are medium green, ovate in shape and have an acute apex. Pubescence on the upper and lower leaf surfaces is sparse. The sepals of 'Kakegawa S30' are elliptic. 'Kakegawa S30' produces single, funnelform, white flowers. The throat of the corolla is white and the veins are weakly prominent. The margins of the corolla lobes are entire. The calyx lobes are less than one quarter the length of the corolla tube.

Origin & Breeding History: The development of 'Kakegawa S30' began with a hybridization made in 1997 at Sakata Seed Corporation's Kakegawa Breeding Station in Kakegawa, Japan. The male parent was a phenotypically fixed F3 selection from a cross between two breeding lines, 4UK-1 and P-1a, made in 1994. The female parent of 'Kakegawa S30' was an F5 selection known as 4-966-1a-1 from a dwarf multiflora white breeding gene pool. F1 seed was obtained from this cross in 1997. In the summer of 1998, 200 F1 plants were transplanted to a field in Salinas, California. Three lines were selected for further evaluation and from these one was finally selected in the summer of 1999 and named 'Kakegawa S30'.

Tests & Trials: Tests and trials for 'Kakegawa S30' were conducted at Ed Sobkowich Greenhouses Ltd., Grimsby, Ontario in the spring and early summer of 2000. The trials consisted of thirteen plants of each variety, grown in 10 cm pots. The pots were spaced in flats on 12.5 cm centres.

Comparison tables for 'Kakegawa S30' with reference variety 'Pink Wave'

Length of longest stem internode (cm)

  'Kakegawa S30' 'Pink Wave'
mean 3.06 4.40
standard deviation 0.74 0.73

Sepal length (mm)

  'Kakegawa S30' 'Pink Wave'
mean 11.5 17.17
standard deviation 3.73 3.31

Sepal width (mm)

  'Kakegawa S30' 'Pink Wave'
mean 3.67 6.33
standard deviation 1.21 2.34

Length of peduncle (cm)

  'Kakegawa S30' 'Pink Wave'
mean 2.85 4.13
standard deviation 0.91 1.22

Colour of corolla on inner side (RHS)

  'Kakegawa S30' 'Pink Wave'
margin white 74A
middle white 74A

Colour of corolla on outer side (RHS)

  'Kakegawa S30' 'Pink Wave'
middle white 74B
throat 160D white
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