Denomination: 'HBA749077'
Botanical Name: Hydrangea
Applicant/Holder: Hydrangea Breeders Association B.V.
Achterweg 58a
1424 PR
De Kwakel
Breeder: Niels Arts, Aalsmeer, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2004-06-16
Application Number: 04-4232
Grant of Rights Date: 2011-05-31
Certificate Number: 4080
Grant of Rights Termination Date: 2029-05-31

Variety Description

Variety used for comparison: 'Mars'

Summary: The leaf blade of 'HBA749077' is shorter and narrower than the leaf blade of 'Mars'. The petiole of 'HBA749077' is shorter than the petiole of 'Mars'. The inflorescence of 'HBA749077' has a taller height than the inflorescence of 'Mars'. The sterile flower of 'HBA749077' has a smaller calyx diameter than the sterile flower of 'Mars'. The sterile flower of 'HBA749077' has incisions present on some of the sepals while the sterile flower of 'Mars' has no incisions on the margin of the sepals.


PLANT: non-climbing, upright growth habit
STEM: no fasciation, green

LEAF: no lobing, elliptic, medium to long tip, acute to obtuse base, shallow to medium depth margin incisions, no variegation, medium green, moderate glossiness on upper side, weak blistering

INFLORESCENCE: early flowering, globular shape, fertile flowers inconspicuous or slightly inconspicuous
STERILE FLOWER: single, medium overlapping of sepals
STERILE FLOWER SEPALS : broad acute apex, incisions present on margin of some sepals, sepals blue pink (RHS 73B) with blue pink (RHS 63B) at base and along veins, ages to light blue pink (RHS 73C) along margin with blue pink (RHS 63B-C) at base
FERTILE FLOWERS: petals pink.

Origin & Breeding History: The hydrangea variety 'HBA749077' originated from a cross made in Aalsmeer, The Netherlands in July 1999. The objectives of the breeding program were to create new hydrangea varieties with attractive flower colour and no vernalization requirement. The new variety was selected by the breeder in March 2001 in Glandorf, Germany. Propagation by vegetative cuttings was first conducted in March 2003 in Glandorf, Germany.

Tests & Trials: Trials for 'HBA749077' were conducted in polyhouse during the spring of 2010 in St. Thomas, Ontario. The trial included 10 plants of the candidate variety and reference variety. All plants were grown from cuttings rooted April 2008, and transplanted into 15 cm pots in May 2008. All plants were transplanted to 1 gallon containers in the spring of 2009. Observations and measurements were taken from 10 plant parts of each variety on June 16, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'HBA749077' with reference variety 'Mars'

Leaf blade length (cm)

  'HBA749077' 'Mars'
mean 11.2 14.8
std. deviation 1.02 1.07

Leaf blade width (cm)

  'HBA749077' 'Mars'
mean 7.1 10.1
std. deviation 0.89 0.63

Petiole length (cm)

  'HBA749077' 'Mars'
mean 1.5 2.2
std. deviation 0.19 0.31

Inflorescence height (cm)

  'HBA749077' 'Mars'
mean 6.8 5.2
std. deviation 0.20 0.60

Sterile flower diameter (mm)

  'HBA749077' 'Mars'
mean 5.2 6.1
std. deviation 0.35 0.47

Click on image for larger view
Hydrangea: 'HBA749077' (left) with reference variety 'Mars' (right)

Click on image for larger view
Hydrangea: 'HBA749077' (left) with reference variety 'Mars' (right)

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