White Yomistique


Denomination: 'White Yomistique'
Trade name: White 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: 2008-10-02
Application Number: 08-6443
Date Withdrawn: 2013-03-27

Variety Description

Variety used for comparison: 'Sylvie Improved'

Summary: The leaf of 'White Yomistique' is longer than the leaf of 'Sylvie Improved'. The flower head of 'White Yomistique' is single while the flower head of 'Sylvie Improved' is semi-double. The flower head diameter is larger for 'White Yomistique' than for 'Sylvie Improved'. The ray floret of 'White Yomistique' is longer than the ray floret of 'Sylvie Improved'. The disc diameter is larger for 'White Yomistique' than for 'Sylvie Improved'.


PLANT: bushy type, semi-upright growth habit, green stem

PETIOLE: moderately upwards attitude, medium length relative to leaf length
LEAF: terminal lobe medium to long relative to leaf length, lowest lateral sinus medium to deep with mostly diverging margins, base obtuse, upper side dark green with weak glossiness, few to medium number of medium depth margin indentations

FLOWER: medium to many flower heads per plant, outer side of bud white to light yellow (RHS 4D), single daisy head type
RAY FLORETS: one to two rows, predominantly ligulate type, horizontal attitude of basal part, upper surface with two keels, absent or very short corolla tube, flat in cross section at widest point, flat margin, straight along longitudinal axis, tip dentate to mamillate
RAY FLORET: inner side white (RHS NN155D), outer side white (RHS NN155C)
DISC: medium diameter relative to head diameter, slightly domed, yellow green before anther dehiscence with no dark spot at centre, yellow orange after anther dehiscence.

Origin & Breeding History: The variety 'White Yomistique' originated from a naturally occurring whole plant mutation of the parent variety 'Frosty Yomistique'. The variety was discovered and selected by the breeder in February 2007 in Fort Myers, Florida, USA. Selection was based on criteria for flower form and colour, flowering response time, excellent branching, compact habit, foliage characteristics and excellent post production longevity. Asexual reproduction by vegetative tip cuttings was first conducted in Fort Myers, Florida in May 2007.

Tests & Trials: Trials for 'White Yomistique' were conducted in a greenhouse trial during the Fall of 2011 in Niagara-on-the-Lake, Ontario. On August 16, 2011, fifty unrooted cuttings were directly stuck into 11 cm pots, with 5 cuttings per pot. The trial included a total of 10 pots of each variety spaced 30 cm apart. Plants were pinched once prior to short day treatment. Observations and measurements were taken from 10 plants of the candidate variety on November 3, 2011 and the reference variety on November 8, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'White Yomistique' with reference variety 'Sylvie Improved'

Leaf length (cm)

  'White Yomistique' 'Sylvie Improved'
mean 6.7 4.3
std. deviation 0.52 0.24

Flower head diameter (cm)

  'White Yomistique' 'Sylvie Improved'
mean 3.5 2.6
std. deviation 0.09 0.19

Ray floret length (cm)

  'White Yomistique' 'Sylvie Improved'
mean 1.5 1.1
std. deviation 0.05 0.09

Disc diameter (cm)

  'White Yomistique' 'Sylvie Improved'
mean 1.4 0.9
std. deviation 0.05 0.08

Click on image for larger view
White Yomistique
Chrysanthemum: 'White Yomistique' (left) with reference variety 'Sylvie Improved' (right)

Click on image for larger view
White Yomistique
Chrysanthemum: 'White Yomistique' (left) with reference variety 'Sylvie Improved' (right)

Click on image for larger view
White Yomistique
Chrysanthemum: 'White Yomistique' (left) with reference variety 'Sylvie Improved' (right)

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