Cal Roosall


Denomination: 'Cal Roosall'
Trade name: Callie Rose '11
Botanical Name: Calibrachoa
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Robert Pierce, Syngenta Flowers, Inc., Gilroy, 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: 2010-02-25
Application Number: 10-6866
Grant of Rights Date: 2012-08-23
Certificate Number: 4366
Date rights surrendered: 2015-08-21

Variety Description

Varieties used for comparison: 'Cal Bulrose' (Callie Rose 06) and 'Suncalpapu' (Million Bells Brilliant Pink)

Summary: The plants of 'Cal Roosall' are shorter in height than the plants of 'Suncalpapu'. the shoots of 'Cal Roosall' are shorter than the shoots of 'Suncalpapu'. The leaf blade of 'Cal Roosall' has a narrow acute apex while the leaf blade of 'Cal Bulrose' has a broad acute to obtuse apex and the leaf blade of Suncalpapu' has a broad acute apex. The pedicel of 'Cal Roosall' is longer than the pedicel of 'Cal Bulrose'. The inner side of the corolla tube of 'Cal Roosall' has weak to moderately conspicuous veins while the corolla tube of 'Suncalpapu' has strongly conspicuous veins.


PLANT: upright growth habit

LEAF BLADE: narrow acute apex, no variegation, upper side medium green

SEPAL: no anthocyanin colouration
FLOWER: single, medium to strong degree of lobing on corolla lobes
COROLLA LOBE: rounded to truncate apex, one colour on upper side, upper side purple (RHS N74A) when newly opened, purple to blue pink (RHS 67A-B) when fully opened with darker purple (RHS 67A) at transition to corolla tube, yellow (RHS 12A) at lip at corolla tube, moderately conspicuous veins on upper side, lower side blue pink (RHS 73A-B)
COROLLA TUBE: inner side yellow (RHS 12A) with weak to moderately conspicuous veins.

Origin & Breeding History: The variety 'Cal Roosall' originated from a cross pollination conducted in Gilroy, California, USA in August 2005. The female parent was a proprietary seedling with deep rose red coloured flowers, designated 1543A-1, and the male parent was a proprietary seedling with coral rose coloured flowers, designated 1512-1. The resultant seed was collected and sown in a greenhouse in Gilroy in February 2006. A single plant was selected from the progeny in May 2006, based on criteria for flower colour and compact plant habit.

Tests & Trials: Trials for 'Cal Roosall' were conducted in a polyhouse during the summer of 2011 in St. Thomas, Ontario. The trial included a total of 20 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 30 cm hanging baskets on May 11, 2011. Each basket contained 4 cuttings with a total of 5 baskets per variety. Observations and measurements were taken from 10 plants of each variety on July 4, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Cal Roosall' with reference varieties 'Cal Bulrose' and 'Suncalpapu'

Plant height (cm)

  'Cal Roosall' 'Cal Bulrose' 'Suncalpapu'
mean 19.6 19.4 23.4
std. deviation 0.69 1.81 1.05

Shoot length (cm)

  'Cal Roosall' 'Cal Bulrose' 'Suncalpapu'
mean 22.0 21.1 26.7
std. deviation 2.48 1.90 2.45

Pedicel length (cm)

  'Cal Roosall' 'Cal Bulrose' 'Suncalpapu'
mean 1.3 0.6 1.2
std. deviation 0.42 0.16 0.14

Click on image for larger view
Cal Roosall
Calibrachoa: 'Cal Roosall' (left) with reference varieties 'Cal Bulrose' (centre) and 'Suncalpapu' (right)

Click on image for larger view
Cal Roosall
Calibrachoa: 'Cal Roosall' (left) with reference varieties 'Cal Bulrose' (centre) and 'Suncalpapu' (right)

Click on image for larger view
Cal Roosall
Calibrachoa: 'Cal Roosall' (left) with reference varieties 'Cal Bulrose' (centre) and 'Suncalpapu' (right)

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