Cal Yell08


Denomination: 'Cal Yell08'
Trade name: Callie Yellow '08
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: 07-5706
Grant of Rights Date: 2010-01-11
Certificate Number: 3715
Date rights surrendered: 2012-01-16

Variety Description

Variety used for comparison: 'Kakegawa S70' (Colorburst Trailing Canary)

Summary: The plants of 'Cal Yell08' are narrower than those of 'Kakegawa S70'. 'Cal Yell08' is a darker yellow on the upper and lower sides of the corolla than 'Kakegawa S70'.


PLANT: upright growth habit, medium height, medium width

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

SEPAL: medium length, narrow, lanceolate, no anthocyanin colouration
FLOWER: single, medium diameter, salverform, short pedicel
COROLLA: weak to medium degree of lobing, one coloured on upper side
COROLLA LOBE: yellow (RHS 6A) on upper side, yellow veins, very weak conspicuousness of veins on upper side, light yellow (RHS 9D) on lower side, cuspidate apex
COROLLA TUBE: short to medium length, yellow (RHS 9A) on inner side, very weak conspicuousness of veins on inner side
ANTHER: yellow before pollen dehiscence

Origin & Breeding History: 'Cal Yell08' originated from a cross made in March 2004 by the breeder Robert Pierce, in Gilroy, California as part of a planned breeding program. The cross was conducted between the female parent '1142-2' and the male parent '1152-1', both proprietary seedlings. The resultant seed from this cross was sown in a greenhouse in January 2005. In April 2005, a single plant from the progeny was selected by the breeder based on flower size and growth habit.

Tests & Trials: Trials for 'Cal Yell08' 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 transplanted 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 Yell08' with reference variety 'Kakegawa S70'

Plant width (cm)

  'Cal Yell08' 'Kakegawa S70'
mean 60.4 70.4
std. deviation 1.64 3.93

Colour of corolla (RHS)

  'Cal Yell08' 'Kakegawa S70'
upper side 6A 9B-D (lighter towards apex)
lower side 9D 11D

Click on image for larger view
Cal Yell08
Calibrachoa: 'Cal Yell08' (left) with reference variety 'Kakegawa S70' (right)

Click on image for larger view
Cal Yell08
Calibrachoa: 'Cal Yell08' (left) with reference variety 'Kakegawa S70' (right)

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