Oste Whiteytwo


Denomination: 'Oste Whiteytwo'
Trade name: Tradewinds White 2005
Botanical Name: Osteospermum ecklonis
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
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: 519-631-6241
Application Date: 2005-03-31
Application Number: 05-4678
Grant of Rights Date: 2007-07-13
Certificate Number: 2814
Date rights surrendered: 2014-07-11

Variety Description

Variety used for comparison: 'Osjamwhit' (Soprano White Improved)

Summary: The leaves of 'Oste Whiteytwo' are shorter and have stronger lobing than those of 'Osjamwhit'. The inflorescences of 'Oste Whiteytwo' are larger and have bigger ray florets than 'Osjamwhit'. The disc of 'Oste Whiteytwo' is medium blue before dehiscence, whereas it is violet for 'Osjamwhit'. The calyxes of 'Oste Whiteytwo' have more pubescence than those of 'Osjamwhit'.


PLANT: erect to semi-erect shoots with weak anthocyanin

LEAF: elliptic to oblanceolate in shape, moderate degree of lobing, no variegation, dark green in colour on the upper side

FLOWER: starts very early, one or two complete ray floret whorls, presence of incomplete ray floret whorls, with dense pubescence on the calyx
RAY FLORET: oblanceolate in shape, obtuse apex, no rolling on the longitudinal margins, horizontal in attitude, white on the upper side and light brown purple on the lower side
DISC: medium blue before dehiscence

Origin & Breeding History: 'Oste Whiteytwo' 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 'OY-8-10' as a female parent and 'OY-79-2' 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 Whiteytwo' 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 Whiteytwo' with reference variety 'Osjamwhit'

Length of leaf (cm)

  'Oste Whiteytwo' 'Osjamwhit'
mean 4.8 5.2
std. deviation 0.40 0.36

Width of leaf (cm)

  'Oste Whiteytwo' 'Osjamwhit'
mean 2.0 1.4
std. deviation 0.28 0.16

Inflorescence diameter (cm)

  'Oste Whiteytwo' 'Osjamwhit'
mean 6.7 5.5
std. deviation 0.15 0.36

Length of ray florets (cm)

  'Oste Whiteytwo' 'Osjamwhit'
mean 3.4 2.7
std. deviation 0.16 0.22

Width of ray florets (cm)

  'Oste Whiteytwo' 'Osjamwhit'
mean 1.0 0.8
std. deviation 0.07 0.08

Click on image for larger view
Oste Whiteytwo
Osteospermum: 'Oste Whiteytwo' (left) with reference variety 'Osjamwhit' (right)

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