Red Yosonoma


Denomination: 'Red Yosonoma'
Trade name: Red Sonoma
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: 2008-04-03
Application Number: 08-6272
Grant of Rights Date: 2013-04-26
Certificate Number: 4498
Date rights surrendered: 2014-04-17

Variety Description

Variety used for comparison: 'Red Yoauburn' (Red Auburn)

Summary: The plant of 'Red Yosonoma' is wider than the plant of 'Red Yoauburn'. The plant growth habit of 'Red Yosonoma' is semi-upright while the growth habit of 'Red Yoauburn' is upright. The ray floret of 'Red Yosonoma' is narrower than the ray floret of 'Red Yoauburn'. The main colour on the inner side of the ray floret is dark purple red for 'Red Yosonoma' while it is red for 'Red Yoauburn'. The outer side of the ray floret is brown purple with light red pink for 'Red Yosonoma' while the outer side of the ray floret of 'Red Auburn' is light yellow with an overlay of brown red and yellow green at the base.


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

PETIOLE: moderately upwards attitude, medium length relative to leaf length
LEAF: terminal lobe long to very long relative to leaf length, lowest lateral sinus deep with diverging to parallel margins, base obtuse, upper side dark green with no glossiness, medium number of deep margin indentations

FLOWER: outer side of bud brown purple (RHS 186A) with yellow, semi-double daisy head type
RAY FLORETS: 2-3 rows, predominantly ligulate type, basal part ascending in attitude, short to medium corolla tube, flat in cross section at widest point, flat margin, weak reflexing of longitudinal axis at distal quarter, tip emarginate and mamillate, inner side dark purple red (RHS 53A), outer side brown purple (RHS 186B) in a mottled pattern with light red pink (RHS 39C) at margin
DISC: small diameter relative to head diameter, slightly domed, green before anther dehiscence with no dark spot at centre, medium yellow at anther dehiscence.

Origin & Breeding History: The variety 'Red Yosonoma' originated from a naturally occurring whole plant mutation of the parent variety 'Yosonoma'. The variety was discovered and selected by the breeder in December 2005 in Fort Myers, Florida, USA. Selection was based on criteria for strong vigorous growth, foliage characteristics, flowering response time, flower form and colour, excellent flower production and suitability for production as a natural spray-type variety. Asexual reproduction by vegetative tip cuttings was first conducted in Fort Myers, Florida in March 2006.

Tests & Trials: Trials for 'Red Yosonoma' were conducted in a greenhouse trial during the Fall of 2011 in Niagara-on-the-Lake, Ontario. On August 8, 2011, fifty unrooted cuttings were directly stuck into 15 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 each variety on November 7, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Red Yosonoma' with reference variety 'Red Yoauburn'

Plant width (cm)

  'Red Yosonoma' 'Red Yoauburn'
mean 46.0 40.3
std. deviation 2.36 2.21

Ray floret width (cm)

  'Red Yosonoma' 'Red Yoauburn'
mean 0.6 1.2
std. deviation 0.07 0.05

Colour of ray floret (RHS)

  'Red Yosonoma' 'Red Yoauburn'
inner side 53A 45A
outer side 186B (mottled) with 39C at margin 11B with 181D overlay, 4C at base

Click on image for larger view
Red Yosonoma
Chrysanthemum: 'Red Yosonoma' (left) with reference variety 'Red Yoauburn' (right)

Click on image for larger view
Red Yosonoma
Chrysanthemum: 'Red Yosonoma' (left) with reference variety 'Red Yoauburn' (right)

Click on image for larger view
Red Yosonoma
Chrysanthemum: 'Red Yosonoma' (left) with reference variety 'Red Yoauburn' (right)

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