CIFZ0004

Chrysanthemum

Denomination: 'CIFZ0004'
Trade name: Chelsey Yellow
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: Mark Smith, Syngenta Flowers, Inc., Gilroy, 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: 2012-02-24
Application Number: 12-7523
Grant of Rights Date: 2014-09-29
Certificate Number: 4886
Grant of Rights Termination Date: 2032-09-29

Variety Description

Varieties used for comparison: 'Golden Yohelga' (Golden Helga) and 'Gedi Three Pyel' (Padre Yellow)

Summary: The plants of 'CIFZ0004' have a green stem whereas the plants of 'Golden Yohelga' have a green stem tinged with purple. The length of the petiole relative to the leaf length of 'CIFZ0004' is medium while it is short for 'Golden Yohelga'. The length of the terminal lobe of the leaf relative to the leaf length of 'CIFZ0004' is medium while it is long for 'Golden Yohelga'. The margins of the lowest lateral sinus of the leaf are diverging for 'CIFZ0004' while the sinus margins of 'Golden Yohelga' are parallel. The leaf margin of 'CIFZ0004' has few, medium depth indentations whereas the leaf margin of 'Golden Yohelga' has a medium number of deep indentations. 'CIFZ0004' has a smaller flower head diameter than 'Golden Yohelga' and 'Gedi Three Pyel'. The longitudinal axis of a ray floret from the inner row is straight for 'CIFZ0004' while a ray floret from the inner row of 'Golden Yohelga' and 'Gedi Three Pyel' is weakly incurved along the distal quarter. The colour of the inner side of the ray floret of 'CIFZ0004' is yellow green with yellow tones whereas for 'Golden Yohelga' and 'Gedi Three Pyel', it is yellow.

Description:

PLANT: garden chrysanthemum, bushy type, semi-upright to hemispherical growth habit, dense branching, many flower heads
STEM: green

PETIOLE: attitude is moderately upwards, medium length relative to leaf length
LEAF: low to medium length to width ratio, length of terminal lobe relative to leaf length is medium, lowest lateral sinus is medium depth, margins of lowest lateral sinus are diverging, predominant shape of base is obtuse, weak glossiness of upper side, medium green on upper side, few indentations of margin, medium depth of indentations of margin

FLOWER BUD: just before opening, outer side is light yellow (RHS 8B) with yellow (RHS 9B) margins
FLOWER HEAD: double, low to medium height in non-disbudded plants, dense ray florets
RAY FLORET: ligulate type, two keels on upper surface, short corolla tube, flat in cross-section at widest point, no rolling of margins, longitudinal axis is straight, longitudinal axis of ray floret from inner row is straight, low length to width ratio, dentate tip, inner side is yellow green (RHS 4C) with yellow (RHS 6C) tones, colour of outer side is similar to colour of inner side, outer side is light yellow (RHS 4D) with yellow (RHS 6C) tones at apex and margins, in comparison to ray floret from inner row the colour of inner side is similar, colour of outer side of ray floret from inner row is light yellow (RHS 5D) with yellow (RHS 6C) apex

Origin & Breeding History: 'CIFZ0004' originated from a naturally occurring whole plant mutation from a proprietary line designated '05-M162A'. It was discovered and selected in November 2009 by the breeder, Mark A. Smith, in Alva, Florida, USA. Selection of 'CIFZ0004' was based on its flower colour, and plant growth habit.

Tests & Trials: The trial for 'CIFZ0004' was conducted as an outdoor irrigated trial during the summer of 2012 at BioFlora Inc. in St. Thomas, Ontario. It included a total of 20 plants of the candidate variety and 12 plants each of the reference varieties. All plants were grown from rooted cuttings and transplanted into 20 cm pots on June 11, 2012. Observations and measurements were taken from 10 plants, or parts of plants, of the candidate and reference varieties on September 25, 2012. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'CIFZ0004' with reference varieties 'Golden Yohelga' and 'Gedi Three Pyel'

Flower head diameter (cm)

  'CIFZ0004' 'Golden Yohelga' 'Gedi Three Pyel'
mean 4.0 5.1 4.6
std. deviation 0.28 0.34 0.19

Colour of ray floret (RHS)

  'CIFZ0004' 'Golden Yohelga' 'Gedi Three Pyel'
inner side 4C with 6C tones 6A 3B

Click on image for larger view
CIFZ0004
Chrysanthemum: 'CIFZ0004' (left) with reference varieties 'Golden Yohelga' (centre) and 'Gedi Three Pyel' (right)

Click on image for larger view
CIFZ0004
Chrysanthemum: 'CIFZ0004' (left) with reference varieties 'Golden Yohelga' (centre) and 'Gedi Three Pyel' (right)

Click on image for larger view
CIFZ0004
Chrysanthemum: 'CIFZ0004' (left) with reference varieties 'Golden Yohelga' (centre) and 'Gedi Three Pyel' (right)

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