Ice Chip

Butterfly Bush

Denomination: 'Ice Chip'
Botanical Name: Buddleja
Applicant/Holder: North Carolina State University
Office of Technology Transfer
1021 Main Campus Drive
Raleigh, North Carolina
27606
United States of America
Breeder: Dennis J. Werner, North Carolina State University, Raleigh, United States of America
Layne K. Snelling, North Carolina State University, Raleigh, 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: 2011-08-25
Application Number: 11-7361
Grant of Rights Date: 2013-11-27
Certificate Number: 4664
Grant of Rights Termination Date: 2031-11-27

Variety Description

Variety used for comparison: 'White Ball'

Summary: 'Ice Chip' has shorter plants and shorter leaf blades than 'White Ball'. The shape of the leaf blade is narrow ovate for 'Ice Chip' while it is lanceolate for 'White Ball'. The florets of 'Ice Chip' have a yellow to orange coloured eye whereas those of 'White Ball' have no distinctive eye.

Description:

PLANT: semi-upright growth habit, broader than tall
SHOOT: new shoots are green, old shoots are brown
STEM: moderately angular in cross-section, dense pubescence

LEAF BLADE: narrow ovate, no variegation, medium green on upper side, dentate margin, absent or very sparse pubescence on upper side, pubescence present on lower side, absent or weak bulging between veins

INFLORESCENCE: begins flowering early, conical, density of florets is medium to dense
CALYX: short, medium to dense pubescence
COROLLA: yellow to orange eye
COROLLA LOBE: attitude is erect, arrangement is not touching, medium incisions of margin, colour of inner side is white (RHS NN155C)

Origin & Breeding History: 'Ice Chip' was bred and developed by the breeders at North Carolina State University in Raleigh, North Carolina, USA. It originated from a controlled cross conducted during the summer of 2005 between the variety 'Blue Chip' as the female parent and a proprietary selection designated 'NC2002-12' as the male parent. The resultant seedlings were planted in field trials in the spring of 2006 in Jackson Springs, North Carolina. 'Ice Chip' was selected in August 2006 based on its compact and spreading growth habit, dense branching, white flowers, inflorescence of intermediate size, and lack of seed set when grown in the field. The first asexual propagation of 'Ice Chip' was conducted in August 2006 in Raleigh, North Carolina.

Tests & Trials: The PBR trial for 'Ice Chip' was conducted outdoors during the summer of 2012 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 15 plants each of the candidate and reference varieties. All plants were grown from 11.5 cm rooted liners and transplanted into 13.5 litre containers on July 8, 2011. Observations and measurements were taken from 10 plants of each variety on July 4, 2012. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Charts.


Comparison tables for 'Ice Chip' with reference variety 'White Ball'

Plant height (cm)

  'Ice Chip' 'White Ball'
mean 34.2 42.6
std. deviation 2.81 3.67

Leaf blade length (cm)

  'Ice Chip' 'White Ball'
mean 5.9 7.8
std. deviation 0.34 0.42

Click on image for larger view
Ice Chip
Butterfly Bush: 'Ice Chip' (left) with reference variety 'White Ball' (right)

Click on image for larger view
Ice Chip
Butterfly Bush: 'Ice Chip' (left) with reference variety 'White Ball' (right)

Click on image for larger view
Ice Chip
Butterfly Bush: 'Ice Chip' (left) with reference variety 'White Ball' (right)

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