Denomination: 'DAHZ0010'
Trade name: Goldalia Rose Improved
Botanical Name: Dahlia
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Eric Giesen, Syngenta Seeds B.V., Andijk, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2012-10-30
Application Number: 12-7774
Grant of Rights Date: 2014-10-29
Certificate Number: 4933
Date rights surrendered: 2015-08-21

Variety Description

Variety used for comparison: 'Goalia Rossa' (Goldalia Rose)

Summary: The plants of 'DAHZ0010' are narrower than those of 'Goalia Rossa'. The leaves of 'DAHZ0010' are smaller than those of 'Goalia Rossa'. The leaflets of 'DAHZ0010' have few to medium number of margin incisions whereas those of 'Goalia Rossa' have medium to many incisions.


PLANT: upright growth habit, green stem

LEAF: predominantly simple, absent or very weak wing, medium length/width ratio, medium green, absent or very weak glossiness, smooth surface texture, flat veins
LEAFLET: elliptic, acute base, few to medium number of margin incisions, deep margin incisions

FLOWER: positioned at same level and moderately above foliage, upright and semi upright attitude, semi-double, daisy type, collar segments present, collar segments ranging from about half to three quarters the length of the ray florets, medium number of ray florets
RAY FLORET: medium length/width ratio, keeled upper surface, more than two keels on keeled florets, moderately concave in cross section at mid-point, medium rolling of margin at distal quarter, straight longitudinal axis, absent or very weak twisting, dentate apex, one colour on inner side, inner side dark purple red (RHS 59A) with flecks of purple (RHS 64A), outer side markedly different from inner side
COLLAR SEGMENTS: white (RHS NN155A) with streaks of purple (RHS 64A)
DISC: medium diameter relative to flower head, yellow before and at anther dehiscence

Origin & Breeding History: 'DAHZ0010' originated from a cross conducted in September 2008, in Enkhuizen, Netherlands, between the female parent variety 'D08-102-1' and the male parent variety 'D07-241-3'. The new variety was developed by the breeder, Eric Giesen, as part of a controlled breeding program. The resultant seed from the cross was sown in a greenhouse in May 2009. In September 2009, a single plant from the progeny was selected by the breeder based on flower colour and plant habit.

Tests & Trials: Trials for 'DAHZ0010' were conducted in a polyhouse during the spring of 2013 in St. Thomas, Ontario. The trial included a total of 15 plants each of the candidate and reference variety. All plants were grown from rooted cuttings and transplanted into 11 cm pots on April 16, 2013. Observations and measurements were taken from 10 plants of each variety on May 15, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'DAHZ0010' with reference variety 'Goalia Rossa'

Plant width (cm)

  'DAHZ0010' 'Goalia Rossa'
mean 16.1 22.4
std. deviation 1.12 1.67

Leaf length (cm)

  'DAHZ0010' 'Goalia Rossa'
mean 7.6 10.3
std. deviation 0.30 0.99

Leaf width (cm)

  'DAHZ0010' 'Goalia Rossa'
mean 3.6 4.9
std. deviation 0.47 0.41

Click on image for larger view
Dahlia: 'DAHZ0010' (left) with reference variety 'Goalia Rossa' (right)

Click on image for larger view
Dahlia: 'DAHZ0010' (left) with reference variety 'Goalia Rossa' (right)

Click on image for larger view
Dahlia: 'DAHZ0010' (left) with reference variety 'Goalia Rossa' (right)

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