Denomination: 'Yotahoe'
Trade name: Tahoe
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: 2004-04-02
Application Number: 04-4163
Grant of Rights Date: 2007-11-22
Certificate Number: 3020
Date rights surrendered: 2008-11-21

Variety Description

Variety used for comparison: 'Shasta'

Summary: 'Yotahoe' has taller plants than 'Shasta'. The margins of the sinus between the lateral lobes of the leaf blade are diverging for 'Yotahoe' while they are parallel to overlapping for 'Shasta'. 'Yotahoe' has a shallower lower leaf lobe sinus than 'Shasta'.


PLANT: year round cultivation for pot production, spray flowering type, 7 week response group, tall height
STEM: no anthocyanin colouration

LEAF: short to medium length, medium width, broad wedged and truncate base
LATERAL LOBE: diverging margins of sinus
LOWER LOBE: medium length, medium deep sinus

FLOWER HEAD: semi-double, daisy type, self-coloured, white colour group, medium diameter, no bracts among ray florets
RAY FLORET: medium length blade with short corolla tube, mostly straight longitudinal axis of majority, mostly concave in cross-section, mamillate or notched tip, white on upper and lower sides
DISC: yellow to greenish brown before anther dehiscence, yellow to orange after anther dehiscence, small to medium diameter
DISC FLORET: tubular type, massed in centre of flower head, yellow

Origin & Breeding History: 'Yosun City' is a product from a planned breeding program conducted by the breeder, Mr. Peter Wain, an employee of Fides Goldstock Breeding in De Lier, The Netherlands. It originated from a cross made in January 2001 in Fareham, Hampshire, United Kingdom between a proprietary Chrysanthemum seedling selection designated 'P130E 1' as the female parent and Chrysanthemum variety 'Los Almos' as the male parent. 'Yotahoe' is a product from 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 made in May 1998 in Salinas, California, USA between an unnamed proprietary Chrysanthemum seedling selection as the female parent and another proprietary Chrysanthemum seedling selection designated 'YB-4422' as the male parent. 'Yotahoe' was selected by the breeder in March 1999 in Alva, Florida, USA 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 'Yotahoe' 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 'Yotahoe' with reference variety 'Shasta'

Plant height (cm)

  'Yotahoe' 'Shasta'
mean 26.8 18.3
std. deviation 1.75 1.25

Depth of lower leaf lobe sinus (cm)

  'Yotahoe' 'Shasta'
mean 1.3 1.9
std. deviation 0.40 0.45

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

Date modified: