Denomination: 'Yobrighton'
Trade name: Brighton
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: 2005-04-05
Application Number: 05-4686
Grant of Rights Date: 2008-11-24
Certificate Number: 3410
Grant of Rights Termination Date: 2026-11-24

Variety Description

Variety used for comparison: 'Yobutterfield' (Butterfield)

Summary: 'Yobrighton' has a taller plant and longer terminal lobe on the leaf than 'Yobutterfield'. The margins of the sinus between lateral lobes of the leaf are converging for 'Yobrighton' while they are diverging for 'Yobutterfield'. The upper side of the ray floret of 'Yobrighton' is darker yellow than that of 'Yobutterfield'. At anther dehiscence, 'Yobrighton' has a darker yellow disc than 'Yobutterfield'.


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

LEAF: dark green, 1.7:1 length/width ratio, obtuse to truncate base, converging margins of sinus between lateral lobes

INFLORESCENCE: 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, concave in cross-section, mamillate to emarginate tip, yellow on upper side, light yellow with yellow mottled over-colour on lower side
DISC: yellow and green before anther dehiscence, medium yellow at anther dehiscence
DISC FLORET: enlarged tubular type

Origin & Breeding History: 'Yobrighton' 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 originated from a cross between proprietary Chrysanthemum seedling selection designated 'YB-4450' as the female parent and another proprietary Chrysanthemum seedling selection designated 'YB-6496' as the male parent. This cross was conducted by the breeder in April 1999, in Salinas, California, USA. 'Yobrighton' was discovered and selected in March 2000, as a single flowering plant among the progeny of the stated cross 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 'Yobrighton' by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in June 2000.

Tests & Trials: Trials for 'Yobrighton' 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 'Yobrighton' with reference variety 'Yobutterfield'

Plant height (cm)

  'Yobrighton' 'Yobutterfield'
mean 28.9 26.8
std. deviation 0.76 1.04

Length of terminal lobe of leaf (cm)

  'Yobrighton' 'Yobutterfield'
mean 2.6 1.9
std. deviation 0.42 0.36

Colour of ray floret (RHS)

  'Yobrighton' 'Yobutterfield'
upper side more yellow than 3A 4A
lower side 2D mottled with 3A over-colour 5C mottled with 5B over-colour

Colour of disc (RHS)

  'Yobrighton' 'Yobutterfield'
at anther dehiscence 12A 9A

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

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

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