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UCONNAM166

Black Chokeberry

Denomination: 'UCONNAM166'
Trade name: Low Scape Hedger
Botanical Name: Aronia melanocarpa
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
Bryan Allan Connolly, Mansfield Center, 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: 2016-06-30
Provisional Protection:: 2016-06-30
Application Number: 16-8948
Grant of Rights Date: 2022-02-03
Certificate Number: 6520
Grant of Rights Termination Date: 2042-02-03

Variety Description

Variety used for comparison: 'Viking'

Summary: The plants of 'UCONNAM166' are taller and have a greater number of main and secondary branches than the plants of 'Viking'. The leaf blade of 'UCONNAM166' is longer than the leaf blade of 'Viking'. The petiole of 'UCONNAM166' has a weak intensity of anthocyanin colouration while the petiole of 'Viking' has a strong intensity of anthocyanin colouration. The inflorescence of 'UCONNAM166' has a smaller diameter than the inflorescence of 'Viking'. The anther of 'UCONNAM166' is purple while it is brown purple for 'Viking'. The fruit of 'UCONNAM166' has a smaller diameter than the fruit of 'Viking'.

Description:

PLANT: shrub type, obconical shape, upright to bushy growth habit, medium growth rate

STEM: brown and red, medium thickness, absent or very sparse pubescence, round in cross-section, smooth bark, absent or very weak glaucosity, medium number of lenticels
SHOOTS: red

PETIOLE: present, medium length, weak intensity of anthocyanin colouration
LEAF: simple type, alternate arrangement on stem, elliptic, acute and cuspidate apex, cuneate base, crenate and serrate margin, lobing and variegation absent, absent or very weak rugosity, absent or very weak waviness of margin
LEAF BLADE (UPPER SIDE): medium green, absent or very sparse pubescence with coarse black hairs along midrib
LEAF BLADE (LOWER SIDE): light green, very sparse pubescence along midrib, weak to medium intensity of anthocyanin colouration on veins

BUD: reddish brown
INFLORESCENCE: corymb type
FLOWER: rotate shape corolla, white (RHS NN155D) with purple red (lighter than RHS 58D) near margins on upper and lower side
ANTHER: purple (RHS 61A)
FRUIT: drupe type, black on outer surface when ripe

Origin & Breeding History: 'UCONNAM166' was developed by the breeders, Dr. Mark Henry Brand, an employee of the University of Connecticut and Dr. Bryan Allan Connolly, an employee of Mansfield Center, Connecticut, USA. The new variety originated from a controlled cross conducted in May 2010 in Storrs, Connecticut, USA between the proprietary Aronia melanocarpa variety, 'UC012', as the female parent, and the Aronia mitschurinii variety 'Viking', as the male parent. 'UCONNAM166' was selected in June 2011 in Storrs, Connecticut based on plant growth habit as well as foliage and flowering characteristics. 'UCONNAM166' was first propagated in June 2011, first by tissue culture then by softwood cuttings.

Tests & Trials: The comparative trial for 'UCONNAM166' was conducted in an outdoor irrigated container trial during the summer of 2020 in St. Thomas, Ontario. The trial included 10 shrubs of the candidate variety and 8 shrubs of the reference variety. All shrubs were grown from rooted cuttings, transplanted into 11.36 litre containers and overwintered in a polyhouse. The trial was arranged in rows, with 1 row per variety and 1 metre spacing between plants. Observations and measurements were taken from 10 plants, or 10 parts of plants. Flower characteristics were assessed on May 23, 2020, plant characteristics on July 23, 2020 and fruit characteristics on September 25, 2020. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'UCONNAM166' with reference variety 'Viking'

Plant height (cm)

  'UCONNAM166' 'Viking'
mean 77.40 61.10
std. deviation 3.81 9.81

Number of main branches

  'UCONNAM166' 'Viking'
mean 2.6 1.8
std. deviation 0.7 0.5

Number of secondary branches

  'UCONNAM166' 'Viking'
mean 5.6 4.2
std. deviation 1.7 1.0

Leaf blade length (cm)

  'UCONNAM166' 'Viking'
mean 9.30 8.60
std. deviation 0.46 0.40

Inflorescence diameter (cm)

  'UCONNAM166' 'Viking'
mean 2.71 3.60
std. deviation 0.41 0.27

Anther colour (RHS)

  'UCONNAM166' 'Viking'
main 61A 186B

Fruit diameter (mm)

  'UCONNAM166' 'Viking'
mean 9.30 13.20
std. deviation 0.61 0.43

Click on image for larger view
UCONNAM166
Black Chokeberry: 'UCONNAM166' (left) with reference variety 'Viking' (right)

Click on image for larger view
UCONNAM166
Black Chokeberry: 'UCONNAM166' (left) with reference variety 'Viking' (right)

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