Denomination: 'Osyel'
Trade name: Jamboana Primrose
Botanical Name: Osteospermum ecklonis
Applicant/Holder: Syngenta Seeds B.V.
P.O. Box 2
1600 AA
Breeder: Ánna M.W.P. Houbraken, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-04-29
Application Number: 05-4816
Date Withdrawn: 2007-06-25

Variety Description

Varieties used for comparison: 'Sunny Alex' and 'Kakegawa AU6' (Sea Mist Lemon Yellow)

Summary: Plants of 'Osyel' are shorter than those of 'Sunny Alex' and 'Kakegawa AU6'. The peduncles and leaves of 'Osyel' are shorter than those of 'Kakegawa AU6'. Leaves of 'Osyel' are oblanceolate whereas those of 'Sunny Alex' are spatulate. Leaves of 'Osyel' are strongly to very strongly lobed, whereas those of 'Kakegawa AU6' are weakly lobed. 'Osyel' has more ray florets and a smaller inflorescence than the reference varieties. The ray florets of 'Osyel' are smaller than those of 'Kakegawa AU6'. The main colour of the upper side of the ray florets of 'Osyel' is light yellow fading towards the base, whereas it is yellow and even for 'Sunny Alex'.The disc of 'Osyel' is yellow with brown before dehiscence whereas it is yellow with orange in 'Sunny Alex' and yellow with grey in 'Kakegawa AU6'.


PLANT: erect shoots with strong anthocyanin

LEAF: oblanceolate in shape, strong to very strong degree of lobing, no variegation, medium to dark green in colour on the upper side

FLOWER: early to mid season, one or two complete ray floret whorls, presence of incomplete ray floret whorls, with dense pubescence on the calyx
RAY FLORET: oblanceolate in shape, with an obtuse apex, no rolling on the longitudinal margins, concave to horizontal in attitude, light yellow fading towards the base on the upper side and yellow with a red-brown central stripe on the lower side
DISC: yellow with brown before dehiscence

Origin & Breeding History: 'Osyel' was developed by the breeder Anna M.W.P. Houbraken, an employee of Syngenta Seeds B.V. in Enkhuizen, The Netherlands. The new osteospermum variety originated from a cross between female parent 'C276' and an unknown male parent, conducted in June 1999. The new variety was selected from the progeny in 2000 based on plant habit, early flowering, branching and flower colour. The variety has been propagated by vegetative cuttings since August 2000.

Tests & Trials: The trials for 'Osyel' were conducted in a polyhouse at BioFlora in St. Thomas, Ontario, during the spring of 2006. The trials included 15 plants of each variety grown from rooted cuttings and transplanted into 11 cm pots. Observations and measurements were taken from 10 plants of each variety. All colour characteristics were determined using the 2001 Royal Horticultural Society (RHS) colour chart.

Comparison tables for 'Osyel' with reference varieties 'Sunny Alex' and 'Kakegawa AU6'

Plant height (cm)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 30.8 41.9 34.1
std. deviation 1.92 2.41 2.08

Length of peduncles (cm)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 3.8 4.0 8.4
std. deviation 0.58 0.55 1.12

Length of leaf (cm)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 5.3 6.0 7.7
std. deviation 0.48 0.83 0.59

Number of ray florets (count)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 29.8 25.2 21.8
std. deviation 3.83 2.39 2.28

Inflorescence diameter (cm)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 6.5 7.6 7.9
std. deviation 0.28 0.29 0.47

Ray floret length (cm)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 3.3 3.7 4.0
std. deviation 0.28 0.16 0.23

Ray floret width (cm)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
mean 0.7 0.7 1.0
std. deviation 0.45 0.06 0.08

Colour of ray florets (RHS)

  'Osyel' 'Sunny Alex' 'Kakegawa AU6'
upper side 4D 12A-B 9A-B

Click on image for larger view
Osteospermum: 'Osyel' (left) with reference varieties 'Kakegawa AU6' (centre) and 'Sunny Alex' (right)

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