Pink Yoirvine

Chrysanthemum

Denomination: 'Pink Yoirvine'
Trade name: Pink Irvine
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
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
Canada
Tel: 519-631-6241
Application Date: 2007-06-28
Application Number: 07-5939
Date Withdrawn: 2011-03-21

Variety Description

Variety used for comparison: 'Yoroanoke' (Roanoke)

Summary: 'Pink Yoirvine' has a shorter plant than 'Yoroanoke'. 'Pink Yoirvine' has a larger flower head diameter than 'Yoroanoke'. The ray floret of 'Pink Yoirvine' is blue pink on the inner side while the ray floret of 'Yoroanoke' is violet.

Description:

PLANT: spray flowering type, pot plant, 8 week response group, upright to semi upright bushy growth habit, green stem

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

FLOWER HEAD: semi-double daisy type, sparse to medium density of ray florets
RAY FLORETS: ligulate, very short corolla tube, moderately ascending to horizontal attitude at basal part, flat to weakly concave in cross section at widest point, straight to weak reflexing of longitudinal axis, emarginate and mamillate tip, inner side blue pink (RHS 71D) with lighter blue pink (RHS 72D) and violet (RHS 75A) secondary colour, secondary colour distributed throughout in diffuse stripes and a mottled pattern, outer side light blue violet (RHS 76C) mottled with violet (RHS 75B) and with blue pink (RHS N74D) at apex and base
DISC: small 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: 'Pink Yoirvine' originated from a naturally occurring whole plant mutation of the parent variety 'Yoirvine' discovered and developed by the breeder, Mrs. Wendy Bergman, in March 2004 in Fort Myers, Florida, USA. 'Pink Yorivine' was selected in June 2004, based on its strong and spreading growth habit, dark and glossy foliage colour, flower form, flower colour, response time and good winter performance. Asexual reproduction of the variety by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in June 2004.

Tests & Trials: Trials for 'Pink Yoirvine' 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 'Pink Yoirvine' with reference variety 'Yoroanoke'

Plant height (cm)

  'Pink Yoirvine' 'Yoroanoke'
mean 24.1 27.0
std. deviation 1.58 0.89

Flower head diameter (cm)

  'Pink Yoirvine' 'Yoroanoke'
mean 8.8 7.3
std. deviation 0.45 0.48

Colour of ray floret (RHS)

  'Pink Yoirvine' 'Yoroanoke'
inner side - main 71D 75A

Click on image for larger view
Pink Yoirvine
Chrysanthemum: 'Pink Yoirvine' (left) with reference variety 'Yoroanoke' (right)

Click on image for larger view
Pink Yoirvine
Chrysanthemum: 'Pink Yoirvine' (left) with reference variety 'Yoroanoke' (right)

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