Cal Bulrose


Denomination: 'Cal Bulrose'
Trade name: Callie Rose '06
Botanical Name: Calibrachoa
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Robert Pierce, Watsonville, 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: 2005-03-29
Application Number: 05-4653
Grant of Rights Date: 2007-10-10
Certificate Number: 2958
Date rights surrendered: 2010-01-25

Variety Description

Variety used for comparison: 'USCALI17' (Superbells Cherry Red)

Summary: 'Cal Bulrose' is a calibrachoa variety which has thicker shoots than 'USCALI17'. The flowers of 'Cal Bulrose' have moderate to strong lobing of the corolla, whereas 'USCALI17' has weak lobing. 'Cal Bulrose' has more conspicuous veins on the upper side of the corolla lobes and more undulating margins of the corolla than the reference variety.


PLANT: mounding growth habit, medium to broad width
SHOOT: medium to thick, medium length, no anthocyanin colouration
LEAF: medium length, medium width, elliptic, narrow to broad acute apex, medium green

SEPAL: short to medium length, rhombic shape, no anthocyanin
FLOWER: single, funnelform, medium diameter, medium to long pedicel
COROLLA: moderate to strong lobing, red purple on upper side, no secondary colour, purple on lower side, red brown veins, veins moderately to strongly conspicuous, moderate to strong undulation of margin
COROLLA TUBE: short, yellow on inner side, strongly conspicuous veins
ANTHER: yellowish white before dehiscence, yellow to light brown after dehiscence

Origin & Breeding History: 'Cal Bulrose' was developed by the breeder, an employee of Goldsmith Seeds, California, U.S.A., as part of a planned pedigree breeding program. The new variety originated from the cross made between the female parent '672-1', a proprietary line with blue coloured flowers, and the male parent '646-1', a proprietary line with red coloured flowers. The resultant seed was sown and in 2003 a single plant was selected by the breeder based on flower colour and plant habit.

Tests & Trials: The tests and trials for 'Cal Bulrose' were conducted in a polyhouse during the summer of 2006 in St. Thomas, Ontario. The trial included a total of 20 plants of each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 25 cm baskets on April 20, 2006. Each basket contained 3 cuttings with a total of 7 baskets per variety. Observations and measurements were taken from 10 plants of each variety on July 5, 2006. All colour measurements were made using the RHS Colour Chart 2001.

Comparison table for 'Cal Bulrose' with reference variety 'USCALI17'

Main colour of corolla lobe (RHS)

  'Cal Bulrose' 'USCALI17'
upper side N74A N74A (N66A towards centre and midveins)
lower side N74C N66C

Click on image for larger view
Cal Bulrose
Calibrachoa: 'Cal Bulrose' (left) with reference variety 'USCALI17' (right)

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