Frosty Yomistique


Denomination: 'Frosty Yomistique'
Trade name: Frosty Mistique
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Wendy Bergman, Syngenta Flowers, Inc., Alva, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2007-09-28
Application Number: 07-6012
Grant of Rights Date: 2011-03-17
Certificate Number: 4019
Date rights surrendered: 2012-01-16

Variety Description

Variety used for comparison: 'Soft Cherie'

Summary: 'Frosty Yomistique' has a taller plant and longer leaf than 'Soft Cherie'. 'Frosty Yomistique' has a smaller flower head diameter and shorter ray floret than 'Soft Cherie'. The inner side of the ray floret is white for 'Frosty Yomistique' while it is violet for 'Soft Cherie'. 'Frosty Yomistique' has blue pink to violet secondary colour and yellow tertiary colour on the inner side of the ray floret while 'Soft Cherie' has no secondary and tertiary colour. The disc of 'Frosty Yomistique' is medium yellow at anther dehiscence while 'Soft Cherie' is light yellow.


PLANT: spray flowering type, pot plant, 7 week response group, semi upright bushy growth habit, green stem

LEAF: terminal lobe medium to long in length relative to leaf length, lowest lateral lobe sinus medium in depth with diverging and parallel margins, base rounded, upper side medium green

FLOWER HEAD: semi-double daisy type, sparse density of ray florets
RAY FLORETS: ligulate, short corolla tube, horizontal attitude at basal part, flat in cross section at widest point, straight along longitudinal axis, emarginate and mamillate tip, inner side white (RHS NN155D), secondary colour blue pink (RHS N74D) to violet (RHS 75A), secondary colour positioned at distal quarter in a flecked and striped pattern, third colour yellow to yellow green (RHS 2B-C) located at the base in a solid or nearly solid pattern, outer side white (RHS NN155D) with blue pink (RHS N74C-D) at apex and yellow (RHS 2B) at base
DISC: medium diameter relative to head diameter, yellow green before anther dehiscence, no dark spot present at centre before dehiscence, medium yellow at anther dehiscence.

Origin & Breeding History: 'Frosty Yomistique' originated from a naturally occurring whole plant mutation of the parent variety 'Yomistique', discovered and developed by the breeder, Mrs. Wendy Bergman, in December 2004 in Fort Myers, Florida, USA. 'Frosty Yomistique' was selected based on its compact growth habit, branching, foliage characteristics, flowering response time, flower form, flower colour and excellent post production quality. Asexual reproduction of the variety by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in March 2005.

Tests & Trials: Trials for 'Frosty Yomistique' were conducted in Leamington, Ontario, in the fall of 2009. Flowering trials were performed under greenhouse conditions similar to those used in commercial chrysanthemum production. Forty unrooted cuttings of both the candidate and reference variety were directly stuck into 15 cm pots, with 4 cuttings per pot, 10 pots per variety, planted on August 24, 2009. Plants were spaced 30 cm apart and pinched once prior to short day treatment. All plants had the center bud removed. Observations and measurements were taken from 10 plants of each variety on November 6, 2009. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Frosty Yomistique' with reference variety 'Soft Cherie'

Plant height (cm)

  'Frosty Yomistique' 'Soft Cherie'
mean 22.0 18.6
std. deviation 1.09 0.70

Leaf length (cm)

  'Frosty Yomistique' 'Soft Cherie'
mean 8.0 6.3
std. deviation 0.43 0.37

Flower head diameter (cm)

  'Frosty Yomistique' 'Soft Cherie'
mean 3.4 4.1
std. deviation 0.12 0.15

Ray floret length (cm)

  'Frosty Yomistique' 'Soft Cherie'
mean 1.6 2.1
std. deviation 0.09 0.16

Colour of ray floret (RHS)

  'Frosty Yomistique' 'Soft Cherie'
inner side - main NN155D 75C, 75B at base
inner side - secondary N74D to 75A N/A
inner side - tertiary 2B-C N/A
outer side NN155D with N74C-D at apex, 2B at base 75C with 76D along margins

Click on image for larger view
Frosty Yomistique
Chrysanthemum: 'Frosty Yomistique' (left) with reference variety 'Soft Cherie' (right)

Click on image for larger view
Frosty Yomistique
Chrysanthemum: 'Frosty Yomistique' (left) with reference variety 'Soft Cherie' (right)

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