Yellow Yocupertino


Denomination: 'Yellow Yocupertino'
Trade name: Yellow Cupertino
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: 2007-09-28
Application Number: 07-6014
Grant of Rights Date: 2011-03-17
Certificate Number: 4023
Date rights surrendered: 2012-01-16

Variety Description

Variety used for comparison: 'Yochesapeake' (Chesapeake)

Summary: 'Yellow Yocupertino' has a shorter plant than 'Yochesapeake'. The lower lateral leaf lobe sinus is diverging to parallel for 'Yellow Yocupertino' while it is overlapping for 'Yochesapeake'. 'Yellow Yocupertino' has a smaller flower head diameter and a lower number of ray florets than 'Yochesapeake'. 'Yellow Yocupertino' has a shorter ray floret and narrower ray floret than 'Yochesapeake'.


PLANT: spray flowering type, pot plant, 8 week response group, semi upright bushy growth habit, green stem

LEAF: terminal lobe medium in length relative to leaf length, lowest lateral lobe sinus medium to deep in depth with diverging and parallel margins, base obtuse, upper side medium green

FLOWER HEAD: semi-double daisy type, sparse to medium density of ray florets
RAY FLORETS: ligulate, short corolla tube, moderately ascending to horizontal attitude at basal part, flat in cross section at widest point, straight along longitudinal axis, mamillate tip, inner side yellow (RHS 7A), outer side yellow (RHS 7C)
DISC: small diameter relative to head diameter, green before anther dehiscence, no dark spot present at centre before dehiscence, yellow green to light yellow at anther dehiscence.

Origin & Breeding History: 'Yellow Yocupertino' originated from a naturally occurring whole plant mutation of the parent variety 'Yocupertino', discovered and developed by the breeder, Mrs. Wendy Bergman, in December 2004 in Fort Myers, Florida, USA. 'Yellow Yocupertino' was selected based on its growth habit, flower production, flower form, flower colour, slow rate of disc maturation and excellent post production longevity. Asexual reproduction of the variety by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in March 2005.

Tests & Trials: Trials for 'Yellow Yocupertino' were conducted in Leamington, Ontario, in the fall of 2009. Flowering trials were performed under greenhouse conditions similar to those used in commercial chrysanthemum production. Forty unrooted cuttings of both the candidate and reference variety were directly stuck into 15 cm pots, with 4 cuttings per pot, 10 pots per variety, planted on August 24, 2009. Plants were spaced 30 cm apart and pinched once prior to short day treatment. All plants had the center bud removed. Observations and measurements were taken from 10 plants of each variety on November 6, 2009. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Yellow Yocupertino' with reference variety 'Yochesapeake'

Plant height (cm)

  'Yellow Yocupertino' 'Yochesapeake'
mean 25.2 30.3
std. deviation 0.82 1.49

Flower head diameter (cm)

  'Yellow Yocupertino' 'Yochesapeake'
mean 8.1 9.0
std. deviation 0.19 0.42

Number of ray florets

  'Yellow Yocupertino' 'Yochesapeake'
mean 24-26 33-35

Ray floret length (cm)

  'Yellow Yocupertino' 'Yochesapeake'
mean 3.8 4.4
std. deviation 0.23 0.24

Ray floret width (cm)

  'Yellow Yocupertino' 'Yochesapeake'
mean 1.0 1.5
std. deviation 0.06 0.09

Colour of ray floret (RHS)

  'Yellow Yocupertino' 'Yochesapeake'
inner side 7A 6A
outer side 7C 6C

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

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

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