Synberna Yel


Denomination: 'Synberna Yel'
Trade name: Bernadette Yellow
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Mark Smith, Syngenta Flowers, Inc., Gilroy, 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: 2009-10-30
Application Number: 09-6761
Grant of Rights Date: 2011-12-05
Certificate Number: 4230
Date rights surrendered: 2014-10-03

Variety Description

Variety used for comparison: 'Donna'

Summary: The leaf of 'Synberna Yel' is larger than the leaf of 'Donna'. The length of the terminal leaf lobe relative to the leaf length is medium to long for 'Synberna Yel' while it is short for 'Donna'. The leaf of 'Synberna Yel' has a truncate base while the leaf of 'Donna' has an acute base. The flower head of 'Synberna Yel' has fewer ray florets than the flower head of 'Donna'.


PLANT: bushy, semi-upright growth habit, dense branching, green stem

LEAF: moderately upwards attitude of petiole, medium to long terminal lobe relative to leaf length, truncate base, upper side medium green with absent or very weak glossiness
LOWEST LATERAL SINUS: shallow to medium depth, diverging margins

INFLORESCENCE: many flower heads per plant
FLOWER HEAD: semi-double, daisy type, few rows of ray florets
RAY FLORETS: sparse to medium density, ligulate type, moderately ascending to horizontal attitude of basal part, upper surface with two keels, short corolla tube, weakly concave to weakly convex in cross section at widest point, flat to weakly revolute margin, revolute part positioned throughout, straight at longitudinal axis, dentate and mamillate tip, inner side yellow (RHS 6A), outer side yellow (RHS 6C).
DISC: small to medium diameter relative to head diameter, flat to slightly domed, yellow orange before anther dehiscence, no dark spot at centre.

Origin & Breeding History: The variety 'Synberna Yel' originated from a controlled cross conducted in October 2004 in Alva, Florida, USA. The female parent was a proprietary seedling designated 01-M169 and the male parent was the variety 'Yogwendolyn'. The resultant seed was sown in a greenhouse in Alva, Florida in June 2005 and a single plant was selected from the progeny in October 2005, based on criteria for flower colour, flower size and plant habit.

Tests & Trials: Trials for 'Synberna Yel' were conducted in an outdoor irrigated trial during the summer of 2010 in St. Thomas, Ontario. The trial included a total of 15 plants of each variety. All plants were grown from rooted cuttings and transplanted into 20 cm pots on June 29, 2010. Observations and measurements were taken from 10 plants of each variety on September 14, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Synberna Yel' with reference variety 'Donna'

Leaf length (cm)

  'Synberna Yel' 'Donna'
mean 4.6 3.8
std. deviation 0.52 0.26

Leaf width (cm)

  'Synberna Yel' 'Donna'
mean 3.4 2.3
std. deviation 0.27 0.25

Number of ray florets

  'Synberna Yel' 'Donna'
mean 33.7 84.5

Click on image for larger view
Synberna Yel
Chrysanthemum: 'Synberna Yel' (left) with reference variety 'Donna' (right)

Click on image for larger view
Synberna Yel
Chrysanthemum: 'Synberna Yel' (left) with reference variety 'Donna' (right)

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