Sunny Yoolympia


Denomination: 'Sunny Yoolympia'
Trade name: Sunny Olympia
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: 2004-10-01
Application Number: 04-4430
Grant of Rights Date: 2008-11-24
Certificate Number: 3408
Date rights surrendered: 2010-01-27

Variety Description

Variety used for comparison: 'Yomanhattan' (Manhattan)

Summary: 'Sunny Yoolympia' has a taller plant and larger flower head diameter than 'Yomanhattan'. The lowest lateral sinus of the leaf is longer for 'Sunny Yoolympia' than 'Yomanhattan'. The upper and lower sides of the ray floret of 'Sunny Yoolympia' are lighter yellow than those of 'Yomanhattan'.


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 base, parallel to converging margins of sinus between lateral lobes

INFLORESCENCE: corymbiform
FLOWER HEAD: double decorative type, self-coloured, light yellow colour group, dense ray florets
RAY FLORET: ligulate, incurved inner ray florets, longitudinal axis of majority is straight with a slightly recurved tip, weak curvature, convex in cross-section, mamillate tip, yellow green on upper side, solid or nearly solid colour pattern on upper side, light yellow on lower side

Origin & Breeding History: 'Sunny Yoolympia' 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 the Chrysanthemum variety 'Yoolympia'. 'Sunny Yoolympia' was discovered and selected on December 1, 2002, as a single flowering plant within a population of 'Yoolympia' plants growing in a controlled environment in Fort Myers, Florida, 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 Yoolympia' by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in December 2002.

Tests & Trials: Trials for 'Sunny Yoolympia' 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 of each variety on October 29, 2007. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Sunny Yoolympia' with reference variety 'Yomanhattan'

Plant height (cm)

  'Sunny Yoolympia' 'Yomanhattan'
mean 32.7 23.8
std. deviation 1.23 1.04

Length of lowest lateral sinus of leaf (cm)

  'Sunny Yoolympia' 'Yomanhattan'
mean 1.7 1.0
std. deviation 0.24 0.28

Flower head diameter (cm)

  'Sunny Yoolympia' 'Yomanhattan'
mean 7.3 5.8
std. deviation 0.32 0.55

Colour of ray floret (RHS)

  'Sunny Yoolympia' 'Yomanhattan'
upper side 3D 5B
lower side 4D-5D 5C

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

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

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