Desyel

Yarrow

Denomination: 'Desyel'
Trade name: Desert Yellow
Botanical Name: Achillea tomentosa x A. millefolium
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: Henricus G.W. Stemkens, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2009-10-06
Application Number: 09-6733
Grant of Rights Date: 2011-08-19
Certificate Number: 4136
Grant of Rights Termination Date: 2029-08-19

Variety Description

Varieties used for comparison: 'Desert Eve Light Yellow' and 'Moonshine'

Summary: The leaves of 'Desyel' are shorter than those of both reference varieties. The inflorescence of 'Desyel' has a smaller diameter than that of both reference varieties. The diameter of the capitulum of 'Desyel' is larger than that of both reference varieties. The main colour of the ray floret of 'Desyel' is a darker yellow than that of 'Desert Eve Light Yellow'.

Description:

PLANT: upright growth habit, dense branching, flowers mid to late season for long duration
STEM: light green

LEAF: pinnately dissected, alternate arrangement
BLADE: oblong shape, acute to mucronate apex, truncate base, pinnatisect margin, dense pubescence on upper and lower surfaces, medium green on upper and lower surfaces

INFLORESCENCE: upright corymb
RAY FLORET: single coloured, sinuate/notched apex, five ray florets per capitulum
UPPER SURFACE: yellow (RHS 2A)
LOWER SURFACE: yellow green (RHS 2D)
DISC FLORET: yellow

Origin & Breeding History: 'Desyel' arose from an open pollinated cross of an Achilliea tomentosa seedling designated 'G6331-1' as the female parent with an unknown Achillea millefolium variety as the male parent which was carried out in the summer of 2002 in Enkhuizen, the Netherlands. The resulting progeny were sown in the greenhouse in March 2003. The new variety, 'Desyel' was selected as a single seedling in July 2003 in Enkhuizen based on flower colour, plant habit and production characteristics.

Tests & Trials: Trials for 'Desyel' were conducted in a polyhouse during the spring of 2010 in St. Thomas, Ontario. The trials included a total of 15 plants of each variety. All plants were grown from rooted cuttings and transplanted into 4.5 litre containers on July 2, 2010. Observations and measurements were taken from 10 plants of each variety on August 3, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Desyel' with reference varieties 'Desert Eve Light Yellow' and 'Moonshine'

Leaf length (cm)

  'Desyel' 'Desert Eve Light Yellow' 'Moonshine'
mean 5.0 5.5 6.7
std. deviation 0.36 0.51 0.78

Inflorescence diameter (cm)

  'Desyel' 'Desert Eve Light Yellow' 'Moonshine'
mean 5.9 6.3 10.4
std. deviation 0.52 0.51 1.34

Capitulum diameter (mm)

  'Desyel' 'Desert Eve Light Yellow' 'Moonshine'
mean 10.1 8.3 5.0
std. deviation 0.96 0.48 0.00

Ray floret colour (RHS)

  'Desyel' 'Desert Eve Light Yellow' 'Moonshine'
upper surface 2A 4B brighter than 2A
lower surface 2D 4D 2D

Click on image for larger view
Desyel
Yarrow: 'Desyel' (left) with reference varieties 'Desert Eve Light Yellow' (centre) and 'Moonshine' (right)

Click on image for larger view
Desyel
Yarrow: 'Desyel' (left) with reference varieties 'Desert Eve Light Yellow' (centre) and 'Moonshine' (right)

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