Yochesapeake

Chrysanthemum

Denomination: 'Yochesapeake'
Trade name: Chesapeake
Botanical Name: Chrysanthemum
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: Aris Horticulture Inc., Barberton, United States of America
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
Canada
Tel: 519-631-6241
Application Date: 2000-09-29
Application Number: 00-2392
Grant of Rights Date: 2003-12-08
Certificate Number: 1680
Grant of Rights Termination Date: 2021-12-08

Variety Description

Variety used for comparison: 'Miramar'

Summary: 'Yochesapeake' flowers in 8 weeks while 'Miramar' flowers in 9 weeks. The corolla tube is shorter in 'Yochesapeake' than in 'Miramar'. The length of the ray floret is slightly shorter in 'Yochesapeake' than in 'Miramar'.

Description:

'Yochesapeake' is a year round, pinched, spray pot chrysanthemum variety. The stem has no anthocyanin colouration. The margin of the sinus between the lateral lobes of the leaf is converging to overlapping.

'Yochesapeake' flowers in 8 weeks and has a semi-double, daisy type flower head with no bracts among the florets. The ray florets have a short corolla tube. The ray florets are straight to reflexing. In cross section the ray floret is flat to convex. The tips of the ray florets are pointed, rounded, and emarginate in shape. The overall flower colour is yellow. The disc florets are tubular, and yellow-green to green in colour before anther dehiscence and yellow at anther dehiscence. The distribution of the disc florets is numerous, massed and clearly visible at all stages of flower head development.

Origin & Breeding History: 'Yochesapeake' is a product of a planned breeding program conducted by the breeders in Salinas, California in October 1994. It originated from a cross of the chrysanthemum variety 'Sandusky' as the female or seed parent and the chrysanthemum variety 'Miramar' as the male or pollen parent. 'Yochesapeake' was discovered and selected as a flowering plant within the progeny of the stated cross in a controlled environment in Fort Myers, Florida. The selection criteria were based on desirable inflorescence form, floret colour, and good post production longevity. Asexual reproduction was initiated in June 1997, by vegetative tip cuttings in a controlled environment in Fort Myers, Florida, USA.

Tests & Trials: Tests and trials were conducted at Yoder Canada Ltd. in Leamington, Ontario in the fall of 2002. Trials were performed under greenhouse conditions which approximate those used in commercial greenhouse practice. Plants in the flowering trial were grown in 15 cm pots with 4 cuttings per pot, and 10 pots per variety. Pots were spaced 30 cm apart. Plants were pinched once prior to short day treatment. Observations and measurements were taken on 10 plants of each variety, and all colour measurements were made using the RHS Colour chart 2001.


Comparison tables for 'Yochesapeake' with reference variety 'Miramar'

Length of the corolla tube of the ray floret (mm)

  'Yochesapeake' 'Miramar'
mean 4.6 10.7
std. deviation 0.51 2.50

Ray floret length (cm)

  'Yochesapeake' 'Miramar'
mean 3.30 3.99
std. deviation 0.11 0.29

Ray floret colour (RHS)

  'Yochesapeake' 'Miramar'
upper surface 5B-5C 5A
lower surface 4C-5C 5C but paler
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