|Botanical Name:||Chrysanthemum ×morifolium|
Dekker Breeding B.V.
Cornelis W. Dekker, Dekker Breeding B.V., Hensbroek, Netherlands
|Agent in Canada:||
38723 Fingal Line
St. Thomas, Ontario
Variety used for comparison: 'Delirossano'
Summary: The plants of 'Dekaljonka' are tall to very tall while plants of 'Delirossano' are of medium height. The upper side of the leaf of 'Dekaljonka' is medium green while that of 'Delirossano' is dark green. The ray floret of 'Dekaljonka' is not rolled while it is moderately revolute for 'Delirossano'.
PLANT: non bushy type, tall to very tall
PETIOLE: attitude is moderately upwards, medium length relative to leaf length
LEAF: medium to long including petiole, medium width, medium to high length to width ratio, length of terminal lobe relative to leaf length is short to medium, lowest lateral sinus is medium depth, margins of lowest lateral sinus are converging, predominant shape of base is rounded, absent or very weak glossiness on upper side, medium green on upper side
LEAF MARGIN: medium to many indentations, shallow to medium depth indentations
FLOWERING PERIOD: 8 weeks with precise daylength control
FLOWER BUD: outer side is blue pink (RHS 186D) tinged with yellow brown just before opening
FLOWER HEAD: double, large diameter in non-disbudded plants, low height in non-disbudded plants, long peduncle, sparse to medium density ray florets
RAY FLORET: predominant type is spatulate, secondary type is ligulate, ribbed on upper surface, medium length corolla tube, moderately concave in cross-section at widest point, no rolling of margins, triangular profile of tube, longitudinal axis is incurving, distal half is not straight along longitudinal axis, medium curvature along longitudinal axis, very long, very broad, low to medium length to width ratio, mamillate tip, inner side is light blue violet (RHS 69C), colour of outer side is not markedly different from colour of inner side, outer side is light blue pink (RHS 75D) with darker blue pink and light yellow brown (RHS 159C) at the tip
Origin & Breeding History: 'Dekaljonka' originated from a hybrid cross conducted by the breeder, Cornelis W. Dekker, in Hensbroek, Netherlands. The cross was made between the proprietary seedlings designated '05.43371.86' as the female parent variety and '05.43371.01' as the male parent variety in May 2012. In October 2012, 'Dekaljonka' was selected from the resulting progeny based on its decorative flower type, flower colour, and good production qualities. 'Dekaljonka' was first propagated by cuttings in November 2012 in Hensbroek, Netherlands and commercialized in September 2013.
Tests & Trials: The detailed description of 'Dekaljonka' is based on the UPOV report of Technical Examination, application number 2014/3369, purchased from the Community Plant Variety Office in Angers, France. The trials were conducted by the National Institute of Agricultural Botany in Cambridge, United Kingdom in 2015.
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