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UCONNBD610

Butterfly Bush

Denomination: 'UCONNBD610'
Trade name: Soda Pop Purple
Botanical Name: Buddleja davidii
Applicant/Holder: University of Connecticut
University of Connecticut Health Center MC6400
263 Farmington Avenue
Farmington, Connecticut
06030 6400
United States of America
Breeder: Mark Henry Brand, University of Connecticut, Storrs, United States of America
William A. Smith, Smith, William Addison, Bristol, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-317-7511
Application Date: 2014-08-29
Application Number: 14-8453
Date Withdrawn: 2020-01-15

Variety Description

Varieties used for comparison: 'Pyrkeep' (Purple Emporer) and 'UCONNBD599' (Soda Pop Lavender)

Summary: The plants of 'UCONNBD610' are broader than they are tall while those of 'Pyrkeep' are taller than they are broad. The leaf blade of 'UCONNBD610' is wider than that of 'Pyrkeep'. The upper side of the leaf blade of 'UCONNBD610' is medium green while that of 'UCONNBD599' is dark green. The inflorescence of 'UCONNBD610' is larger than that of 'Pyrkeep' and shorter than that of 'UCONNBD599'. The inner side of the corolla lobe of 'UCONNBD610' is violet with blue violet along the margin whereas the corolla lobe of 'Pyrkeep' is darker violet with darker blue violet along the margin and that of 'UCONNBD599' is light blue violet throughout.

Description:

PLANT: semi-upright to spreading growth habit, broader than tall, flowering begins mid-season
STEM: red and green, strongly angular in cross-section, dense pubescence

LEAF BLADE: lanceolate, medium green on upper side, no variegation, sinuate and crenate margin, absent or very sparse pubescence on upper side, very dense pubescence on lower side, weak bulging between veins

INFLORESCENCE: conical, dense to very dense flowers
CALYX: medium length, dense to very dense pubescence
COROLLA LOBE: semi-erect to horizontal attitude at full flowering, non-touching arrangement, medium depth margin incisions, inner side violet (RHS N80B) with blue violet (RHS 90C) along margin, orange red (RHS 28A, N25A) eye

Origin & Breeding History: 'UCONNBD610' originated from a controlled cross conducted in Storrs, Connecticut, USA by breeders, Dr. Mark Henry Brand, an employee of the University of Connecticut, and William Addison Smith, a former student at the University of Connecticut. In July 2008, the cross was made between the Buddleja davidii varieties 'Royal Red' (female parent) and 'UConn dwf-01' (male parent). 'UCONNBD610' was selected in July 2010 based on its compact and dense plant growth habit, thick stems with short internodes, wide textured leaves, numerous panicles and cold temperature hardiness. Asexual propagation was first conducted by softwood cuttings in July 2010 in Storrs, Connecticut, USA.

Tests & Trials: The comparative trial for 'UCONNBD610' was conducted in a polyhouse during the spring and summer of 2018, at Bioflora Inc., in St. Thomas, Ontario. The trial included a total of 12 plants each of the candidate and reference varieties. All plants were grown from 10 cm rooted liners and transplanted into 9 litre containers on July 19, 2016. Observations and measurements were taken from 10 plants, or 10 parts of plants, of each variety on July 26, 2018. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'UCONNBD610' with reference varieties 'Pyrkeep' and 'UCONNBD599'

Leaf blade width (cm)

  'UCONNBD610' 'Pyrkeep' 'UCONNBD599'
mean 4.6 2.8 4.2
std. deviation 0.45 0.41 0.20

Inflorescence length (cm)

  'UCONNBD610' 'Pyrkeep' 'UCONNBD599'
mean 29.9 20.9 36.2
std. deviation 3.05 2.04 3.92

Inflorescence width (cm)

  'UCONNBD610' 'Pyrkeep' 'UCONNBD599'
mean 5.4 4.0 5.5
std. deviation 0.39 0.22 1.18

Colour of corolla lobe (RHS)

  'UCONNBD610' 'Pyrkeep' 'UCONNBD599'
inner side N80B with 90C along margin N81B with 90B along margin 76A

Click on image for larger view
UCONNBD610
Butterfly Bush: 'UCONNBD610' (left) with reference varieties 'Pyrkeep' (centre) and 'UCONNBD599' (right)

Click on image for larger view
UCONNBD610
Butterfly Bush: 'UCONNBD610' (left) with reference varieties 'Pyrkeep' (centre) and 'UCONNBD599' (right)

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