Denomination: 'Dekkovu'
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: 2010-06-21
Application Number: 10-7007
Grant of Rights Date: 2011-09-22
Certificate Number: 4186
Date rights surrendered: 2015-09-22

Variety Description


PLANT: 7.5 week response group, non-bushy, very tall, green stem

LEAF: medium size stipule, moderately upwards attitude of petiole with horizontal blade attitude, short to medium length petiole relative to leaf length, medium length leaf including petiole, medium width, medium to high length/width ratio, short to medium length terminal lobe relative to leaf length, obtuse base, medium green with weak glossiness of upper surface, medium to many shallow indentations
LOWEST LATERAL SINUS: medium to deep, converging margins

INFLORESCENCE: deeply domed form, medium to broad, small angle between primary lateral shoot and stem, upright to semi-upright attitude of lateral flower heads, many flower heads per stem
FLOWER BUD: dark purple red (closest to RHS 187B) on outer surface just before opening
FLOWER HEAD: semi-double, medium diameter, medium height, long to very long peduncle, very few to few rows of ray florets, few to medium number of ray florets
RAY FLORETS: ligulate type only, moderately ascending to horizontal attitude of basal part, upper surface ribbed, short corolla tube, weakly convex profile in cross section at widest point, weakly involute rolling of margin at basal quarter, short to medium length, medium in width, low length/width ratio, mamillate tip, dark purple red (RHS 60A, but very slightly more red) on inner surface, brown red (RHS 181C) on outer surface
LONGITUDINAL AXIS OF RAY FLORET: reflexing at distal quarter, weak to medium strength of curvature
DISC FLORETS: daisy type, medium diameter, small to medium diameter relative to head diameter, slightly domed profile in cross section, green with no dark spot at centre before anther dehiscence, medium yellow at anther dehiscence.

Origin & Breeding History: 'Dekkovu' originated from crossing the proprietary seedling '03.7442.02' as the female parent with the proprietary seedling number '02.6933.01' as the male parent which was conducted in October, 2004 in Hensbroek, The Netherlands. It was selected from the resultant progeny in April, 2005 based on flower colour, plant vigour, flower number per stem and good vase life. Asexual reproduction of the variety by cuttings was first conducted in Hensbroek in May, 2005 and was designated for commercialization in June, 2007.

Tests & Trials: The detailed description of 'Dekkovu' is based on the UPOV report of Technical Examination, application number 2008/1829, purchased from the Community Plant Variety Office in Angers, France. The trials were conducted by The National Institute of Agricultural Botany (NIAB) in Cambridge, United Kingdom, in 2009. Colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart, 5th edition.

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Chrysanthemum: 'Dekkovu'

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