VDTG67

Dahlia

Denomination: 'VDTG67'
Trade name: Dark Angel Braveheart
Botanical Name: Dahlia
Applicant/Holder: Verwer-Dahlia's BV
Derde Poellaan 73/75
NL 2161 DL
Lisse
Netherlands
Breeder: Aad W.M. Verwer, Verwer-Dahlia's BV, Lisse, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2006-12-07
Application Number: 06-5697
Grant of Rights Date: 2009-12-16
Certificate Number: 3698
Date rights surrendered: 2013-11-27

Variety Description

Varieties used for comparison: 'VDTG17' (Dark Angel Dracula) and 'HS Romeo' (Happy Single Romeo)

Summary: 'VDTG67' has a shorter plant height than 'VDTG17'. 'VDTG67' has purple stem colour while 'HS Romeo' has green stems tinged with brownish red or purple. 'VDTG67' has a predominantly pinnate leaf while 'HS Romeo' has a predominantly simple leaf. 'VDTG67' has a shorter peduncle length and smaller flower head diameter than the reference varieties. 'VDTG67' differs slightly in flower colour from the reference varieties.

Description:

PLANT: upright growth habit, short height, purple stem colour

LEAF: predominantly pinnate, very weak to weak wing present, short, narrow, purple, weak glossiness, smooth to very weakly rugose, veins depressed, elliptic, acute base, few to medium incisions on margin, incisions shallow

PEDUNCLE: very short, brownish red to purple

FLOWER HEAD: at same level and moderately above foliage, semi upright attitude, single, daisy type, no collar segments, very small diameter
RAY FLORET: few in number, 1:0.67 length to width ratio, keeled upper surface with two keels, weakly concave to flat in cross section at mid point, margin not rolled, longitudinal axis straight, absent to very weak twisting, mamillate apex, purple with tones of dark purple red on inner side with purple secondary colour in a flushed pattern on distal quarter, outer side similar to inner side
DISC: medium diameter, red brown before anther dehiscence, yellow-orange at anther dehiscence.

Origin & Breeding History: 'VDTG67' originated from an open pollinated cross between the female parent, a Dahlia plant identified as 'R', and an unidentified male parent. The cross took place in the summer of 2003 in Lisse, The Netherlands. A single seedling was selected in the summer of 2004 based on criteria for flower form, flower colour, compact plant habit and dark foliage colour. Asexual propagation by cuttings was first conducted in Lisse, The Netherlands, in the spring of 2005.

Tests & Trials: Trials for 'VDTG67' were conducted in a polyhouse during the spring/summer of 2008 at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants per variety. All plants were grown from rooted cuttings and transplanted into 15 cm pots on May 15, 2008. Observations and measurements were taken from 10 plants of each variety on July 8, 2008. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'VDTG67' with reference varieties 'VDTG17' and 'HS Romeo'

Plant height (cm)

  'VDTG67' 'VDTG17' 'HS Romeo'
mean 22.9 31.7 26.8
std. deviation 1.52 1.57 2.82

Peduncle length (cm)

  'VDTG67' 'VDTG17' 'HS Romeo'
mean 5.7 9.3 7.7
std. deviation 0.82 1.23 0.96

Flower head diameter (cm)

  'VDTG67' 'VDTG17' 'HS Romeo'
mean 4.3 6.6 6.7
std. deviation 0.28 0.32 0.42

Colour of ray floret (RHS)

  'VDTG67' 'VDTG17' 'HS Romeo'
inner side - primary 61A with tones of 46A 53A 53A
inner side - secondary N74A 46A (darker than) 53A (darker than)
inner side - tertiary N/A N74B with tones of 67A 64C

Click on image for larger view
VDTG67
Dahlia: 'VDTG67' (left) with reference varieties 'HS Romeo' (centre) and 'VDTG17' (right)

Click on image for larger view
VDTG67
Dahlia: 'VDTG67' (left) with reference varieties 'HS Romeo' (centre) and 'VDTG17' (right)