Golia Dbbro

Dahlia

Variety Description

Varieties used for comparison: 'Balnovapse' (Dahlietta Apricot Sunrise) and 'Golia Scarl' (Goldalia Scarlet)

Summary: The plants of 'Golia Dbbro' are shorter than the plants of 'Balnovapse'. The peduncle length is shorter for 'Golia Dbbro' than for 'Balnovapse'. The flower head is single for 'Golia Dbbro' while it is semi-double for 'Balnovapse'. The flower head of 'Golia Dbbro' is smaller in diameter than the flower head of 'Balnovapse'. The flower head of 'Golia Dbbro' has collar segments present while the flower head of 'Balnovapse' has no collar segments. The ray florets of 'Golia Dbbro' have two colours while the ray florets of 'Golia Scarl' have one colour. The lower side of the ray floret of 'Golia Dbbro' is similar in colour to the upper side while the ray floret of 'Golia Scarl' is markedly different on the lower side.

Description:

PLANT: upright growth habit, green stem

LEAF: predominantly simple, absent or very weak leaf wing, medium green, weak glossiness, smooth or very weak rugose texture, veins flat
LEAFLET: elliptic shape, acute base, few to medium incisions on margin, incisions shallow to medium in depth

PEDUNCLE: green

FLOWER: at same level in relation to foliage, semi-upright to horizontal attitude, single, daisy type, collar segments present, collar segments three quarters the length of the ray florets
RAY FLORETS: medium length to width ratio, two keels on upper surface, weakly concave in cross section, flat to weakly revolute margin with rolling in middle half, longitudinal axis straight to reflexing, weak curvature at distal half, absent or very weak twisting, apex retuse, inner side red (RHS 45A-44A) with yellow green (RHS 1B) at tip when newly opened, red to orange brown (RHS 34A-B) with yellow green (RHS 1B) secondary colour when fully opened, secondary colour distributed at distal half in diffuse stripes, outer side similar to inner side in colour
DISC: small diameter relative to flower head, yellow-orange before anther dehiscence, orange at anther dehiscence, collar segments yellow green (RHS 1B).

Origin & Breeding History: The dahlia variety 'Golia Dbbro' originated from a cross made in August 2006 in Andijk, The Netherlands. The female parent was a proprietary line designated D05-117-3 and the male parent was a proprietary line designated D05-116-3. The resultant seed was sown in a greenhouse in November 2006. In February 2007, a single plant from the progeny was selected based on flower colour, plant habit and production characteristics.

Tests & Trials: Trials for 'Golia Dbbro' were conducted in a polyhouse during the spring of 2010 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of fifteen plants of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 11 cm pots on May 18, 2010. Observations and measurements were taken from ten plants or parts of plants on June 16, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Golia Dbbro' with reference varieties 'Balnovapse' and 'Golia Scarl'

Plant height (cm)

Peduncle length (cm)

Flower head diameter (cm)

Main colour of inner side of ray floret (RHS)

Secondary colour of inner side of ray floret (RHS)

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Dahlia: 'Golia Dbbro' (left) with reference varieties 'Balnovapse' (centre) and 'Golia Scarl' (right)

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Dahlia: 'Golia Dbbro' (left) with reference varieties 'Balnovapse' (centre) and 'Golia Scarl' (right)