Whip Bule


Denomination: 'Whip Bule'
Trade name: Whispers Blue
Botanical Name: Petunia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Mitchell Hanes, Goldsmith Seeds, Inc., Morgan Hill, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-03-31
Application Number: 05-4677
Grant of Rights Date: 2007-10-10
Certificate Number: 2968
Date rights surrendered: 2014-10-10

Variety Description

Varieties used for comparison: 'Kakegawa S28' (Supertunia Royal Velvet) and 'Jam Bule' (Jamboree Blue)

Summary: 'Whip Bule' has a shorter sepal length than the reference varieties and a narrower sepal than 'Kakegawa S28'. 'Whip Bule' has a slightly lighter colour on the lower side of the corolla than 'Kakegawa S28'. 'Whip Bule' has light purple anther colour before pollen dehiscence while 'Kakegawa S28' has greenish cream anther colour.


PLANT: semi-upright growth habit, medium height and width

SHOOTS: medium thickness, medium length, weak anthocyanin colouration

LEAVES: medium length and width, ovate to elliptic, broad acute to obtuse apex, no variegation, medium to dark green on upper side, blistering present, petiole short to medium in length

SEPALS: medium length, narrow to medium width, linear to oblanceolate, no anthocyanin colouration

FLOWERS: short to medium length pedicel, single corolla, small to medium diameter, salverform shape
COROLLA: moderate lobing, dark violet on upper side, blue violet on lower side, veins purple and weakly conspicuous, margin with weak undulation
COROLLA TUBE: medium length, violet on inner side, veins weakly conspicuous
ANTHERS: light purple before pollen dehiscence, medium blue after dehiscence.

Origin & Breeding History: 'Whip Bule' originated as part of a planned pedigree breeding program in California, USA. The new variety originated from a cross made by the breeder in February 2002 between the female parent, 'Supertunia Royal Velvet' and the male parent 'PY152', a proprietary line with blue coloured flowers. The resultant seed was sown in June 2002 and in August 2002 a single plant was selected by the breeder based on flower colour, flower form and plant habit.

Tests & Trials: The tests and trials for 'Whip Bule' 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 'Whip Bule' with reference varieties 'Kakegawa S28' and 'Jam Bule'

Sepal length (mm)

  'Whip Bule' 'Kakegawa S28' 'Jam Bule'
mean 16.7 19.6 20.0
std. deviation 1.16 1.84 1.70

Sepal width (mm)

  'Whip Bule' 'Kakegawa S28' 'Jam Bule'
mean 4.1 5.1 4.6
std. deviation 0.57 0.99 0.70

Colour of corolla (RHS)

  'Whip Bule' 'Kakegawa S28' 'Jam Bule'
upper side 86A 86A (darker than) 86A
lower side 86B 83B 86B

Colour of corolla tube (RHS)

  'Whip Bule' 'Kakegawa S28' 'Jam Bule'
inner side N82A N81B-C N82A-B

Click on image for larger view
Whip Bule
Petunia: 'Whip Bule' (left) with reference varieties 'Kakegawa S28' (centre) and 'Jam Bule' (right)

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