Denomination: 'DAHZ0011'
Trade name: Goldalia Scarlet 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: 12-7775
Grant of Rights Date: 2014-10-29
Certificate Number: 4934
Date rights surrendered: 2017-10-29

Variety Description

Variety used for comparison: 'Goalia Scarl' (Goldalia Scarlet)

Summary: The plants of 'DAHZ0011' are wider than those of 'Goalia Scarl'. The petioles of 'DAHZ0011' are longer than those of 'Goalia Scarl'. After petal drop, the receptacles of 'DAHZ0011' are wider than those of 'Goalia Scarl'.


PLANT: upright growth habit, green stem

LEAF: predominantly simple, absent or very weak wing, medium length/width ratio, medium green, weak glossiness, smooth surface texture, flat veins
LEAFLET: elliptic, acute base, 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, no rolling of margin, straight longitudinal axis, absent or very weak twisting, dentate apex, one colour on inner side, inner side red (between RHS 44A and 45B), colour of outer side markedly different from inner side, outer side yellow (RHS 5B-C) with red (RHS 44A) margins and central bar
COLLAR SEGMENTS: yellow (RHS 5B) with weak red (RHS 44A) along margins
DISC: medium diameter relative to flower head, yellow before anther dehiscence, orange at anther dehiscence

Origin & Breeding History: 'DAHZ0011' originated from a cross conducted in September 2008, in Enkhuizen, Netherlands, between the female parent variety 'D08-262-1' and the male parent variety 'D06-309-1'. 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 'DAHZ0011' were conducted in a polyhouse during the summer 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 June 26, 2013. Observations and measurements were taken from 10 plants of each variety on August 9, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'DAHZ0011' with reference variety 'Goalia Scarl'

Plant width (cm)

  'DAHZ0011' 'Goalia Scarl'
mean 21.0 18.3
std. deviation 1.87 1.24

Petiole length (cm)

  'DAHZ0011' 'Goalia Scarl'
mean 4.2 3.4
std. deviation 0.40 0.40

Receptacle width (cm)

  'DAHZ0011' 'Goalia Scarl'
mean 1.2 1.0
std. deviation 0.10 0.07

Click on image for larger view
Dahlia: 'DAHZ0011' (left) with reference variety 'Goalia Scarl' (right)

Click on image for larger view
Dahlia: 'DAHZ0011' (left) with reference variety 'Goalia Scarl' (right)

Click on image for larger view
Dahlia: 'DAHZ0011' (left) with reference variety 'Goalia Scarl' (right)

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