Sunny Yoblush


Denomination: 'Sunny Yoblush'
Trade name: Sunny Blush
Botanical Name: Chrysanthemum
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: 2004-12-03
Application Number: 04-4496
Grant of Rights Date: 2008-11-24
Certificate Number: 3407
Date rights surrendered: 2014-10-03

Variety Description

Variety used for comparison: 'Yellow Yoblush' (Yellow Blush)

Summary: 'Sunny Yoblush' has a taller plant and larger flower head diameter than 'Yellow Yoblush'. The upper and lower sides of the ray florets of 'Sunny Yoblush' are lighter yellow than those of 'Yellow Yoblush'.


PLANT: year round cultivation for pot production, spray flowering type, 8 week response group
STEM: green, no anthocyanin colouration

LEAF: dark green, 1.8:1 length/width ratio, obtuse and asymetric base, mostly diverging margins of sinus between lateral lobes

INFLORESCENCE: flat corymbiform to corymbiform
FLOWER HEAD: semi-double daisy type, self-coloured, dark yellow colour group, moderately dense ray florets
RAY FLORET: ligulate, longitudinal axis of majority is straight with slightly reflexed tip, mostly concave in cross-section, outer ray florets may be flat to concave in cross-section, emarginate tip, yellow on upper side, solid or nearly solid colour pattern on upper side, lower side is light yellow with darker yellow along margins
DISC: yellow green before anther dehiscence
DISC FLORETS: enlarged tubular type

Origin & Breeding History: 'Sunny Yoblush' is a product of a planned breeding program conducted by the breeder, Mrs. Wendy R. Bergman, an employee of Yoder Brothers, Inc. in Barberton, Ohio, USA. It is a naturally occurring whole plant mutation of Chrysanthemum variety 'White Blush'. 'Sunny Yoblush' was discovered and selected on November 10, 2002, as a single flowering plant within a population of 'White Blush' plants growing in a controlled environment in Salinas, California, USA. The selection of this plant was based on its uniform plant growth habit, desirable inflorescence form and floret colours, fast response time and excellent post-production longevity. Asexual reproduction of 'Sunny Yoblush' by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in February 2003.

Tests & Trials: Trials for 'Sunny Yoblush' were conducted in the fall of 2007 at Yoder Canada Ltd. in Leamington, Ontario. They were performed under greenhouse conditions similar to those used in commercial Chrysanthemum production. 40 unrooted cuttings per variety were directly stuck into 15 cm pots with 4 cuttings per pot and 10 pots per variety. The pots were spaced 30 cm apart. The plants were pinched once prior to short day treatment. All plants had the central bud removed. Observations and measurements were taken from 10 plants per variety on October 29, 2007. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Sunny Yoblush' with reference variety 'Yellow Yoblush'

Plant height (cm)

  'Sunny Yoblush' 'Yellow Yoblush'
mean 27.0 23.5
std. deviation 1.15 1.41

Flower head diameter (cm)

  'Sunny Yoblush' 'Yellow Yoblush'
mean 7.2 6.1
std. deviation 0.61 0.46

Colour of ray floret (RHS)

  'Sunny Yoblush' 'Yellow Yoblush'
upper side 6A 7A
lower side 6D with 6C margins 7D streaked with 7C

Click on image for larger view
Sunny Yoblush
Chrysanthemum: 'Sunny Yoblush' (left) with reference variety 'Yellow Yoblush' (right)

Click on image for larger view
Sunny Yoblush
Chrysanthemum: 'Sunny Yoblush' (left) with reference variety 'Yellow Yoblush' (right)

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