Kirimaji Double Blue Velvet

Petunia

Denomination: 'Kirimaji Double Blue Velvet'
Trade name: Double Wave Blue Velvet
Botanical Name: Petunia ×hybrida
Applicant/Holder: Japan Agribio Company, Limited
1-5-11 Irifune, Chuo-ku
Tokyo
104-0042
Japan
Breeder: Saori Yamada, Japan
Daigaku Takeshita, Kirin Agribio Company, Limited, Tokyo, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2005-03-29
Application Number: 05-4648
Grant of Rights Date: 2007-08-17
Certificate Number: 2876
Date rights surrendered: 2012-06-22

Variety Description

Variety used for comparison: 'Condoblue' (Supertunia Double Dark Blue)

Summary: 'Kirimaji Double Blue Velvet' has a wider leaf than 'Condoblue'. The upper side of the corolla is a darker violet colour than the corolla of 'Condoblue'. The lower side of the corolla is violet for 'Kirimaji Double Blue Velvet' while it is violet and light blue violet for 'Condoblue'. 'Kirimaji Double Blue Velvet' has a longer corolla tube than 'Condoblue'.

Description:

PLANT: spreading growth habit, medium height, medium to wide

SHOOTS: thin to medium thickness, medium length, absent to very weak anthocyanin colouration

LEAVES: medium length, wide, ovate, broad acute apex, no variegation, medium green on upper side, blistering present, petiole medium to long

SEPALS: medium length and width, oblanceolate-spatulate, no anthocyanin colouration

FLOWERS: short to medium length pedicel, double corolla, medium to large diameter, trumpet shape
COROLLA: moderate lobing, dark violet on upper side, violet on lower side, veins purple and very weakly conspicuous, margin with strong undulation
COROLLA TUBE: medium length, violet on inner side, veins weakly conspicuous
ANTHERS: medium blue before and after pollen dehiscence.

Origin & Breeding History: 'Kirimaji Double Blue Velvet' originated from a cross between an unnamed proprietary selection as the female parent and the variety 'Dress up Violet' as the male parent. The cross was made in March 2003, in Shioya, Tochigi-ken, Japan. 'Kirimaji Double Blue Velvet' was selected in October 2003, based on distinctive flower colour and semi-prostrate growth habit. Asexual reproduction by vegetative cuttings was first conducted in January 2004, at the Plant Laboratory of Kirin Brewery Co., Ltd., Tochigi-ken, Japan.

Tests & Trials: The tests and trials for 'Kirimaji Double Blue Velvet' were conducted in a polyhouse at BioFlora in St. Thomas, Ontario in the spring of 2006. The trials included 15 plants of each variety. Rooted cuttings were transplanted into six inch pots on April 17, 2006. Observations and measurements were taken from 10 plants of each variety. All colour measurements were made using the 2001 Royal Horticultural Society Colour Chart.


Comparison tables for 'Kirimaji Double Blue Velvet' with reference variety 'Condoblue'

Leaf width (cm)

  'Kirimaji Double Blue Velvet' 'Condoblue'
mean 3.1 2.3
std. deviation 0.44 0.24

Colour of corolla (RHS)

  'Kirimaji Double Blue Velvet' 'Condoblue'
upper side 86A, with tones darker than N87A N87A with N82A tones
lower side N87A-B N82B, as light as 84D (mottled)

Colour of corolla tube (RHS)

  'Kirimaji Double Blue Velvet' 'Condoblue'
inner side N80A N82A-B

Corolla tube length (mm)

  'Kirimaji Double Blue Velvet' 'Condoblue'
mean 26.0 18.2
std. deviation 1.41 1.87

Click on image for larger view
Kirimaji Double Blue Velvet
Petunia: Kirimaji Double Blue Velvet' (left) with reference variety 'Condoblue' (right)

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