Cal Whiroen


Denomination: 'Cal Whiroen'
Trade name: Callie White with Rose Vein
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: 2007-01-09
Application Number: 07-5705
Grant of Rights Date: 2010-01-11
Certificate Number: 3714
Date rights surrendered: 2016-01-11

Variety Description

Variety used for comparison: 'KLECA07144' (MiniFamous Sun Pink Veins)

Summary: The plants of 'Cal Whiroen' are larger than those of 'KLECA07144'. 'Cal Whiroen' has longer leaves than 'KLECA07144'. The sepals of 'Cal Whiroen' are medium to long with anthocyanin colouration present while those of 'KLECA07144' are short with no anthocyanin colouration. 'Cal Whiroen' has weak degree of lobing of the corolla while 'KLECA07144' has medium to strong. The veins on the corolla of 'Cal Whiroen' are yellow and red while those of 'KLECA07144' are purple. 'Cal Whiroen' differs from 'KLECA07144' in the colour of the upper side of the corolla. The conspicuousness of veins on the upper side of the corolla lobe and the inner side of the corolla tube of 'Cal Whiroen' is weak while that of 'KLECA07144' is medium.


PLANT: upright growth habit, tall, wide

LEAF BLADE: medium length, elliptic and obovate, narrow acute to broad acute apex, no variegation, medium green on upper side, no blistering
PETIOLE: medium to long length

SEPAL: medium to long, narrow, lanceolate, anthocyanin colouration present
FLOWER: single, medium diameter, salverform, short to medium length pedicel
COROLLA: weak degree of lobing, two coloured on upper side
COROLLA LOBE: when newly opened light yellow (RHS 8D) with small dark violet (RHS N79A) and purple red (RHS N57A) eye marking at transition to corolla tube on upper side, when fully opened white with pink blush and a small dark purple red (RHS 60B, N66A) eye marking at transition to corolla tube on upper side, yellow (RHS 6B) tongue on upper side, yellow and red veins, weak conspicuousness of veins on upper side, white on lower side, emarginate apex
COROLLA TUBE: medium length, yellow (RHS 9A) on inner side, weak conspcicuousness of veins on inner side
ANTHER: yellow before pollen dehiscence

Origin & Breeding History: 'Cal Whiroen' originated from a cross made in July 2004 by the breeder Robert Pierce, in Gilroy, California as part of a planned breeding program. The cross was conducted between the female parent '966-1' and the male parent '917-1', both proprietary seedlings. The resultant seed from this cross was sown in a greenhouse in June 2005. In September 2005, a single plant from the progeny was selected by the breeder based on flower size, flower colour and growth habit.

Tests & Trials: Trials for 'Cal Whiroen' were conducted in a polyhouse during the spring of 2008 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 tranpslanted into 30 cm hanging baskets on May 23, 2008. 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 22, 2008. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Cal Whiroen' with reference variety 'KLECA07144'

Plant height (cm)

  'Cal Whiroen' 'KLECA07144'
mean 25.5 13.0
std. deviation 2.69 2.03

Plant width (cm)

  'Cal Whiroen' 'KLECA07144'
mean 66.7 56.0
std. deviation 2.56 3.34

Leaf length (cm)

  'Cal Whiroen' 'KLECA07144'
mean 3.8 3.1
std. deviation 0.22 0.16

Main colour of upper side of corolla (RHS)

  'Cal Whiroen' 'KLECA07144'
newly opened 8D N/A
fully opened white with pink blush white

Secondary colour of upper side of corolla (RHS)

  'Cal Whiroen' 'KLECA07144'
newly opened N79A with N57A N/A
fully opened eye more red than 60B with N66A and tongue 6B eye 59A, 60D and tongue 5A

Click on image for larger view
Cal Whiroen
Calibrachoa: 'Cal Whiroen' (left) with reference variety 'KLECA07144' (right)

Click on image for larger view
Cal Whiroen
Calibrachoa: 'Cal Whiroen' (left) with reference variety 'KLECA07144' (right)

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