Balserlem

Osteospermum

Denomination: 'Balserlem'
Trade name: Serenity Lemonade
Botanical Name: Osteospermum ecklonis
Applicant/Holder: Ball Horticultural Company
622 Town Road
West Chicago, Illinois
60185
United States of America
Breeder: Linda Laughner, Ball Horticultural Company, Santa Paula, 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: 2009-03-16
Application Number: 09-6552
Grant of Rights Date: 2011-11-03
Certificate Number: 4205
Date rights surrendered: 2012-11-09

Variety Description

Varieties used for comparison: 'Oste Yel' (Tradewinds Pure Yellow) and 'Tra Yelbic' (Tradewinds Yellow Bicolor)

Summary: The leaf blade of 'Balserlem' has deep margin indentations while the leaf blade of 'Oste Yel' has very deep indentations and the leaf of 'Tra Yelbic' has very shallow to shallow indentations. The flower head of 'Balserlem' is smaller than the flower head of 'Oste Yel' and larger than the flower head of 'Tra Yelbic'. The upper side of the ray floret of 'Balserlem' is a lighter yellow colour than the ray floret of 'Oste Yel. The ray floret of 'Balserlem' has one colour while the ray floret of 'Tra Yelbic' has two colours. The disc florets are light grey with blue tips for 'Balserlem' while they are yellow green for the reference varieties.

Description:

PLANT SHOOTS: erect

LEAF: deep margin indentations, no variegation, medium green on upper side

FLOWER: no paracorolla
RAY FLORET: rounded apex, no inward rolling of longitudinal margins, upper side of young ray floret light yellow (RHS 8B) with lighter yellow (RHS 8C) towards base and yellow (RHS 9A) at apex, upper side of mature ray floret light yellow (RHS 8D) at basal zone, main colour light yellow (RHS 8C) with yellow (RHS 8A) at apex, lighter towards base, lower side light yellow with pale green stripes
DISC: light grey with blue tips.

Origin & Breeding History: The variety 'Balserlem' originated from a self pollination conducted in June 2006 at Santa Paula, California, USA. The female parent was a proprietary breeding selection designated 10925-1, characterized by its bright yellow flower colour, medium green foliage colour and upright growth habit. The initial selection was made in February 2007 and asexual propagation since that time has been through the use of vegetative cuttings. The variety was selected for its yellow flower colour and compact well branched growth habit.

Tests & Trials: Trials for 'Balserlem' were conducted in a polyhouse during the spring of 2010 in St. Thomas, Ontario. The trial included a total of fifteen plants of the candidate and reference varieties. Rooted cuttings were transplanted into 11 cm pots on April 28, 2010. Observations and measurements were taken from ten plants or parts of plants on June 15, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Balserlem' with reference varieties 'Oste Yel' and 'Tra Yelbic'

Flower head diameter (cm)

  'Balserlem' 'Oste Yel' 'Tra Yelbic'
mean 7.1 8.4 6.2
std. deviation 0.20 0.57 0.29

Colour of young ray floret (RHS)

  'Balserlem' 'Oste Yel' 'Tra Yelbic'
upper side 8B with 8C at base, 9A at tip 12B with 12A in streaks and along margin N155B with 10D towards apex, 12A at tip

Colour of upper side of ray floret (RHS)

  'Balserlem' 'Oste Yel' 'Tra Yelbic'
basal zone 8D 8B NN155B
main 8C with 8A at apex 12B, streaked with 12A 10C, streaked with 10A

Click on image for larger view
Balserlem
Osteospermum: 'Balserlem' (left) with reference varieties 'Oste Yel' (centre) and 'Tra Yelbic' (right)

Click on image for larger view
Balserlem
Osteospermum: 'Balserlem' (left) with reference varieties 'Oste Yel' (centre) and 'Tra Yelbic' (right)

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