Yogolden Gate


Denomination: 'Yogolden Gate'
Trade name: Golden Gate
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: 2004-10-01
Application Number: 04-4427
Grant of Rights Date: 2008-03-03
Certificate Number: 3153
Date rights surrendered: 2015-01-22

Variety Description

Variety used for comparison: 'Lemon Cymbal'

Summary: The flowering response time for 'Yogolden Gate' is eight (8) weeks whereas it is nine (9) weeks for 'Lemon Cymbal'. 'Yogolden Gate' has taller plants and a longer corolla tube of the ray florets than 'Lemon Cymbal'. The shape of the base of the leaves is broad wedged for 'Yogolden Gate' while it is narrow wedged for 'Lemon Cymbal'. The curvature of the ray florets along the longitudinal axis is moderately incurved for 'Yogolden Gate' while it is strongly incurved for 'Lemon Cymbal'. 'Yogolden Gate' has darker yellow ray florets on both the upper and lower sides than 'Lemon Cymbal'.


PLANT: year round cultivation, pinched plant type, disbud flowering type, potted plant production, eight (8) week response group

LEAF BLADE: broad wedged base, overlapping margins of sinus between lateral lobes

FLOWER HEAD: double type, decorative incurve (intermediate) sub-type, self coloured, medium yellow colour group
RAY FLORETS: medium incurving along longitudinal axis of majority, concave in cross-section, incurved end, emarginate tip, yellow on inner and outer sides

Origin & Breeding History: 'Yogolden Gate' 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-pollination made in November 1999 between the proprietary Chrysanthemum seedling selection designated 'YB-4976' as the female parent and another prorietary Chrysanthemum seedling selection designated 'YB-4691' as the male parent. The cross took place in Salinas, Califormia, USA. 'Yogolden Gate' was selected in November 2000 in Fort Myers, Florida, USA based on its uniform plant growth habit, desirable inflorescence form, ray floret colours, fast response time and excellent post-production longevity.

Tests & Trials: Trials for 'Yogolden Gate' were conducted under greenhouse conditions similar to those used in commercial production, during the winter of 2007 at Yoder Canada Ltd. in Leamington, Ontario. Thirty (30) unrooted cuttings of each variety were directly stuck into 15 cm pots, with five (5) cuttings per pot and six (6) pots per variety. Cuttings of the candidate were stuck on December 27, 2006, while those of the reference variety were stuck on December 20, 2006. Plants were spaced 30 cm apart, pinched once prior to short day treatment and later disbudded by removal of lateral buds. Unless otherwise indicated, measured characteristics were based on measurements taken from 10 plants or parts of plants. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) colour chart.

Comparison tables for 'Yogolden Gate' with reference variety 'Lemon Cymbal'

Plant height (cm)

  'Yogolden Gate' 'Lemon Cymbal'
mean 33.6 24.5
std. deviation 1.23 2.61
number measured 6 6

Ray floret corolla tube length (cm)

  'Yogolden Gate' 'Lemon Cymbal'
mean 1.9 0.5
std. deviation 0.27 0.00

Ray floret colour (RHS)

  'Yogolden Gate' 'Lemon Cymbal'
upper side 3A-B 3C
lower side 5C 2D

Click on image for larger view
Yogolden Gate
Chrysanthemum: 'Yogolden Gate' (left) with reference variety 'Lemon Cymbal' (right)

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