Denomination: 'Caltradabl'
Previously Proposed Denomination: 'SG 40007'
Trade name: Superbells Trailing Blue
Botanical Name: Calibrachoa
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Jolanda Dekker, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2003-08-28
Application Number: 03-3833
Grant of Rights Date: 2005-11-25
Certificate Number: 2302
Date rights surrendered: 2013-11-13

Variety Description

Variety used for comparison: 'Sunbelkubu' (Million Bells Trailing Blue)

Summary: 'Caltradabl' is a calibrachoa variety which produces plants that are more compact and not as wide as the plants of 'Sunbelkubu'. The two varieties have very similar flower colour. However, there are differences in the conspicuousness of the veins. Although the primary veins of 'Caltradabl' are weakly conspicuous on the upper side of the corolla, the secondary veins are very inconspicuous. On the lower side of the corolla and corolla tube the veins are very inconspicuous. In comparison, 'Sunbelkubu' has more comspicuous primary and secondary veins on both the upper and lower sides of the corollas and also on the corolla tube.


'Caltradabl' is a calibrachoa variety with a trailing growth habit. The shoots are thin, medium in length and have no anthocyanin colouration. The leaves are medium to long and narrow to medium in width. The leaf blade is medium green in colour and elliptic in shape, with a narrow acute apex and no blistering. The petiole is medium to long. The sepals are medium in length and medium to broad in width and are lanceolate in shape, with no anthocyanin colouration.

'Caltradabl' has single flowers which are medium in diameter and funnel shaped. The pedicel is medium in length. The corolla has moderate lobing. The upper side of the corolla is purple violet. The veins on the upper side of the corolla are purple. The primary veins are weakly conspicuous and the secondary veins are very inconspicuous. The undulation of the corolla margin is weak. The apex of the corolla lobe of 'Caltradabl' is retuse. The corolla tube is medium to long in length and light yellow on the inner side. The veins on the corolla tube are very weakly conspicuous on the inner side. The anthers of 'Caltradabl' are yellow.

Origin & Breeding History: The variety 'Caltradabl' originated from the cross of Y990-1 and Y996. Y990-1 is a blue flower colour selection, having compact growth and a compact spreading plant habit. Y996 is a blue flower colour selection, having compact growth and compact spreading plant habit. As a result of this cross the variety 'Caltradabl' was created in 1999 in Enkhuizen, The Netherlands.

Tests & Trials: The tests and trials for 'Caltradabl' were conducted in a polyhouse in St. Thomas, Ontario, during the summer of 2004. The trial consisted of a total of 18 plants of each variety. All plants were grown from rooted cuttings, transplanted into 10 inch baskets on May 27, 2004. Each basket contained 3 cuttings, with a total of 6 baskets per variety. Observations and measurements were taken from 10 plants of each variety on July 16, 2004. All colour measurements were made using the RHS Colour Chart 2001.

Comparison tables for 'Caltradabl' with reference variety 'Sunbelkubu'

Plant width (cm)

  'Caltradabl' 'Sunbelkubu'
mean 39.4 52.8
std. deviation 3.40 1.70

Length of pedicel (mm)

  'Caltradabl' 'Sunbelkubu'
mean 19.8 22.0
std. deviation 4.80 5.52

Main colour of upper side of corolla (RHS)

  'Caltradabl' 'Sunbelkubu'
newly opened N81A N81A
fully opened N82A N82A
fades to N87B-C N87B-C

Main colour of corolla (RHS)

  'Caltradabl' 'Sunbelkubu'
lower side N81C-D N81C & N82D

Main colour of corolla tube (RHS)

  'Caltradabl' 'Sunbelkubu'
inner side 5C, 4C-D 5C, 4C-D
Date modified: