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Oste Yel


Denomination: 'Oste Yel'
Trade name: Tradewinds Yellow
Botanical Name: Osteospermum ecklonis
Applicant/Holder: Goldsmith Seeds, Inc.
2280 Hecker Pass Highway
P.O. Box 1349
Gilroy, California
United States of America
Breeder: Pim Kaagman, Goldsmith Seeds Europe B.V., Andijk, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2005-03-31
Application Number: 05-4679
Grant of Rights Date: 2007-06-08
Certificate Number: 2802
Date rights surrendered: 2009-05-25

Variety Description

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

Summary: The plants of 'Oste Yel' are shorter and have less anthocyanin on the stems than those of 'Sunny Alex'. The peduncles of 'Oste Yel' are longer than those of the reference varieties. The leaves of 'Oste Yel' are longer than those of the reference varieties. The leaf blades of 'Oste Yel' have stronger lobing and are darker green than those of 'Kakegawa AU6'. Inflorescences of 'Oste Yel' have less ray florets than the reference varieties. The ray florets of 'Oste Yel' are longer than those of the reference varieties, and wider than those of 'Sunny Alex'. The colour of the upper side of the ray florets of 'Oste Yel' is darker yellow than that of 'Kakegawa AU6'. The colour on the upper side of the ray florets of 'Oste Yel' is even, whereas it is lighter towards the base in 'Kakegawa AU6'.


PLANT: erect shoots with weak to medium anthocyanin

LEAF: spatulate to oblanceolate in shape, very strong degree of lobing, no variegation, 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, acute apex, no rolling on the longitudinal margins, horizontal in attitude, yellow orange on the upper side and yellow with a red-brown stripe on the lower side
DISC: yellow-brown before dehiscence

Origin & Breeding History: 'Oste Yel' was developed by the breeder Pim Kaagman, an employee of Goldsmith Seeds Europe B.V. in Andijk, The Netherlands. The new osteospermum variety originated from a cross between proprietary lines 'OX-7-1' as a female parent and 'OZ-185-1' as a male parent. The new variety was selected from the progeny in 2003 based on flower colour, form and plant habit.

Tests & Trials: The trials for 'Oste Yel' 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 'Oste Yel' with reference varieties 'Sunny Alex' and 'Kakegawa AU6'

Plant height (cm)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 31.7 41.9 34.1
std. deviation 2.31 2.41 2.08

Length of peduncles (cm)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 11.2 4.0 8.4
std. deviation 1.51 0.55 1.12

Length of leaf (cm)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 8.3 6.0 7.7
std. deviation 1.13 0.83 0.59

Number of ray florets (count)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 18.4 25.2 21.8
std. deviation 1.34 2.39 2.28

Inflorescence diameter (cm)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 9.9 7.6 7.9
std. deviation 0.52 0.29 0.47

Ray floret length (cm)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 4.8 3.7 4.0
std. deviation 0.30 0.16 0.23

Ray floret width (cm)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
mean 1.0 0.7 1.0
std. deviation 0.09 0.06 0.08

Colour of ray florets (RHS)

  'Oste Yel' 'Sunny Alex' 'Kakegawa AU6'
upper side Brighter than 14A 12A-B 9A-B

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

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