Dektimman Dark


Denomination: 'Dektimman Dark'
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Dekker Breeding B.V.
Julianaweg 6A
1711 RP
Breeder: Cornelis W. Dekker, Dekker Breeding B.V., Hensbroek, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2011-06-07
Application Number: 11-7308
Grant of Rights Date: 2013-06-19
Certificate Number: 4531
Date rights surrendered: 2015-06-19

Variety Description

Variety used for comparison: 'Dektimman'

Summary: The main colour of the inner side of the ray floret is red purple for 'Dektimman Dark' while it is purple becoming slightly paler in the distal half for 'Dektimman'.


PLANT: tall to very tall, non-bushy type, response group when grown under precise daylength control is 4 (7 weeks)
STEM: green
SITPULE: small

PETIOLE: attitude is moderately upwards, short to medium length relative to leaf length
LEAF: medium length including petiole, medium width, medium length/width ratio, terminal lobe is medium length relative to leaf length, lowest lateral sinus is deep, margins of lowest lateral sinus are touching, rounded base, weak glossiness of upper side, medium green on upper side, attitude is horizontal
LEAF MARGIN: medium to many indentations, medium depth indentations

INFLORESCENCE: deeply domed form, narrow at widest point, medium size angle between primary lateral shoot and stem, upright to semi-upright attitude of lateral flower heads
FLOWER BUD: colour of outer side just before opening is nearest to grayed-purple (RHS 186D, but slightly darker)
FLOWER HEAD: few per stem, semi-double type, medium to large diameter and medium height on non-disbudded plants, very few to few rows of ray florets, few to medium number of ray florets, long to very long peduncle
RAY FLORET: ligulate type only, attitude of basal part is moderately ascending to horizontal, ribbed upper surface, very short to short corolla tube, profile in cross-section at widest point is weakly concave, weakly revolute margin at mid-section, longitudinal axis is reflexed, part of longitudinal axis which is not straight is the extreme tip, weak curvature along londitudinal axis, medium length, broad, low length/width ratio, mamillate tip, two coloured on inner side, main colour on inner side is red-purple (RHS 72A), secondary colour on inner side is white (RHS NN155B) and located in the marginal zone of the distal quarter, solid or nearly solid pattern of secondary colour on inner side, colour of outer and inner sides is similar
DISC: daisy type, large diameter, medium diameter relative to head diameter, slightly domed profile in cross-section, green before anther dehiscence, no dark spot at centre before anther dehiscence, medium yellow at anther dehiscence

Origin & Breeding History: 'Dektimman Dark' was discovered and developed as part of a planned breeding program by the breeder, Cornelius W. Dekker, in Hensbroek, Netherlands. It was discovered in July 2006 as a naturally occurring, whole plant mutation of the variety 'Dektimman'. 'Dektimman Dark' was selected based on its flower colour stability during high temperatures, relatively fast response time, good vase life, and having the same, good growing qualities as 'Dektimman'.

Tests & Trials: The detailed description of 'Dektimman Dark' is based on the UPOV report of Technical Examination, application number 2010/0780, purchased from the Community Plant Variety Office, Angers, France. The trials were conducted by the National Institute of Agricultural Botany in Cambridge, United Kingdom, in 2011. Colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison table for 'Dektimman Dark' with reference variety 'Dektimman'

Inner side of ray floret

  'Dektimman Dark' 'Dektimman'
main colour 72A 77B, becoming slightly paler in distal half

Click on image for larger view
Dektimman Dark
Chrysanthemum: 'Dektimman Dark'

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