CIDZ0004

Chrysanthemum

Denomination: 'CIDZ0004'
Trade name: Petaluma White
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: 2010-08-17
Application Number: 10-7062
Date Withdrawn: 2014-09-29

Variety Description

Variety used for comparison: 'Yojuneau' (Juneau)

Summary: The depth of the lowest lateral sinus of the leaf is shallow for 'CIDZ0004' while it is medium to deep for 'Yojuneau'. Just before opening, the colour of the outer side of the flower bud is yellowish white for 'CIDZ0004' while it is pinkish white for 'Yojuneau'. 'CIDZ0004' has a larger flower head diameter and a broader ray floret than 'Yojuneau'. The attitude of the basal part of the ray floret is horizontal for 'CIDZ0004' while it is moderately ascending for 'Yojuneau'. 'CIDZ0004' has a pointed ray floret tip while 'Yojuneau' has a mamillate ray floret tip. The colour of the disc before anther dehiscence is medium yellow for 'CIDZ0004' whereas it is yellowish green for 'Yojuneau'.

Description:

PLANT: pot chrysanthemum, bushy type, upright growth habit, sparse to medium branching
STEM: green

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

FLOWER BUD: outer side is yellowish white (RHS 155B) just before opening
FLOWER HEAD: semi-double, daisy type, low height in non-disbudded plants, two rows of ray florets, medium density of ray florets
RAY FLORET: ranging from 22 to 26 per flower head, ligulate type, attitude of basal part is horizontal, two keels on upper surface, very short corolla tube, flat to weakly convex in cross-section at widest point, no rolling of margins, longitudinal axis is straight, medium length to width ratio, pointed tip, inner side is white (RHS NN155D) with an occasional yellow streak, colour of outer side is similar to colour of inner side
DISC: small diameter relative to flower head diameter, strongly domed profile in cross-section, green to yellowish with no dark spot at centre before anther dehiscence, medium yellow after anther dehiscence

Origin & Breeding History: 'CIDZ0004' originated from a controlled cross-pollination conducted in February 2006, in Salinas, California, USA, as part of a controlled breeding program of Syngenta Flowers, Inc. The cross involved a proprietary line designated 'YB-A9154' as the female parent, and a proprietary line designated 'YB-A9028' as the male parent. The resultant seed was sown in a greenhouse in July 2006. 'CIDZ0004' was selected as a single plant from the progeny in November 2006 by the breeder, Wendy R. Bergman, in Alva, Florida, USA, based on its flower colour, plant growth habit, and production characteristics.

Tests & Trials: The trial for 'CIDZ0004' was conducted in the fall of 2012 at Meyers Fruit Farm in Niagara on the Lake, Ontario. Flowering trials were conducted under greenhouse conditions similar to those used in commercial Chrysanthemum production. 50 unrooted cuttings were stuck into 15 cm pots on August 18, 2012. There were 5 cuttings per pot and the pots were spaced 30 cm apart. The plants were pinched once prior to short day treatment. Observations and measurements were taken from 10 plants, or parts of plants, of the candidate and reference varieties on November 14, 2012. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'CIDZ0004' with reference variety 'Yojuneau'

Colour of flower bud just before opening (RHS)

  'CIDZ0004' 'Yojuneau'
outer side 155B NN155C

Flower head diameter (cm)

  'CIDZ0004' 'Yojuneau'
mean 7.5 6.8
std. deviation 0.34 0.36

Ray floret width (cm)

  'CIDZ0004' 'Yojuneau'
mean 1.2 0.9
std. deviation 0.09 0.11

Click on image for larger view
CIDZ0004
Chrysanthemum: 'CIDZ0004' (left) with reference variety 'Yojuneau' (right)

Click on image for larger view
CIDZ0004
Chrysanthemum: 'CIDZ0004' (left) with reference variety 'Yojuneau' (right)

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