Yellow Yomankato


Denomination: 'Yellow Yomankato'
Trade name: Yellow Mankato
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: Keepsake Plants, Ltd.
P.O. Box 370
268 Seacliff Drive West
Leamington, Ontario
N8H 3W3
Tel: 519-326-6121; Ext.224
Application Date: 2003-09-30
Application Number: 03-3842
Grant of Rights Date: 2007-11-22
Certificate Number: 3014
Date rights surrendered: 2008-11-21

Variety Description

Varieties used for comparison: 'Yomankato' (Mankato) and 'Yobutterfield' (Butterfield)

Summary: 'Yellow Yomankato' has taller plants with a greater number of primary lateral shoots per plant than 'Yomankato'. The flower head type of 'Yellow Yomankato' is anemone centred while it is semi-double for 'Yobutterfield'. 'Yellow Yomankato' has yellow flower heads while those of 'Yomankato' are white. 'Yellow Yomankato' has fewer ray florets per flower than 'Yomankato' and a larger disc diameter than 'Yobutterfield'. The disc florets of 'Yellow Yomankato' are enlarged tubular type while those of 'Yobutterfield' are tubular.


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

LEAF: medium length, medium width, truncate base
LATERAL LOBE: parallel to overlapping margins of sinus
LOWER LOBE: medium to long, medium deep sinus

FLOWER HEAD: anemone centered, daisy type, self coloured, yellow colour group of moderate intensity, medium diameter, no bracts among ray florets
RAY FLORET: short to medium length blade with short corolla tube, mostly straight longitudinal axis of majority, concave in cross-section, dentate tip (2-3 notches), yellow on upper side, lighter yellow on lower side
DISC: yellow green before anther dehiscence, yellow after anther dehiscence, medium to large diameter
DISC FLORET: enlarged tubular type, numerous, massed, clearly visible at all stages of flower head development, yellow

Origin & Breeding History: 'Yellow Yomankato' is a naturally occurring whole plant mutation of Chrysanthemum variety 'Yomankato'. It was discovered in January 2001, in a controlled environment in Fort Myers, Florida, USA by the breeder, Mrs. Wendy R. Bergman, an employee of Yoder Brothers, Inc. in Barberton, Ohio, USA. The selection of 'Yellow Yomankato' was based on its uniform plant growth habit, desirable inflorescence form and floret colours, fast response time and excellent post production longevity.

Tests & Trials: Trials for 'Yellow Yomankato' were conducted in the fall of 2006 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 centre bud removed. Measured characteristics were based on measurements taken from 10 plants or parts of plants on November 1, 2006. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Yellow Yomankato' with reference varieties 'Yomankato' and 'Yobutterfield'

Plant height (cm)

  'Yellow Yomankato' 'Yomankato' 'Yobutterfield'
mean 22.0 19.3 20.3
std. deviation 1.33 0.67 1.49

Number of primary lateral shoots

  'Yellow Yomankato' 'Yomankato' 'Yobutterfield'
mean 4.8 3.5 4.3
std. deviation 0.63 0.71 0.48

Number of ray florets per flower head

  'Yellow Yomankato' 'Yomankato' 'Yobutterfield'
mean 20.2 28.2 19.2

Disc diameter (cm)

  'Yellow Yomankato' 'Yomankato' 'Yobutterfield'
mean 2.6 2.6 1.6
std. deviation 0.20 0.26 0.12

Ray floret colour (RHS)

  'Yellow Yomankato' 'Yomankato' 'Yobutterfield'
upper side 5B whiter than 155D more intense than 5B
lower side 5C-D whiter than 155D 5C & 5B in checkerboard pattern

Click on image for larger view
Yellow Yomankato
Chrysanthemum: 'Yellow Yomankato' (left) with reference varieties 'Yomankato' (centre) and 'Yobutterfield' (right)

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