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VLR002

Rose

Denomination: 'VLR002'
Trade name: Aurora Borealis
Botanical Name: Rosa
Applicant/Holder: Canadian Nursery Landscape Association
7856 Fifth Line South
RR #4
Milton, Ontario
L9T 2X8
Canada
Tel: 1-888-446-3499

Vineland Research and Innovation Centre
4890 Victoria Avenue North
P.O. Box 4000
Vineland Station, Ontario
L0R 2E0
Canada
Tel: 905-562-0320 x623
Breeder: Rumen Conev, St. Catharines, Ontario
Application Date: 2018-01-11
Application Number: 18-9372
Grant of Rights Date: 2019-09-04
Certificate Number: 6061
Grant of Rights Termination Date: 2039-09-04

Variety Description

Variety used for comparison: 'Siena Vigorosa'

Summary: The terminal leaf blade of 'VLR002' is ovate whereas the terminal leaf blade of 'Siena Vigorosa' is narrow elliptic. The flowers of 'VLR002' have less petals than the flowers of 'Siena Vigorosa'. The petals of 'VLR002' are larger than those of 'Siena Vigorosa'. The petals of 'VLR002' are purple red whereas those of 'Siena Vigorosa' are lighter purple red with light yellow orange at the base. The petal of 'VLR002' has a small sized medium yellow basal spot while the petal of 'Siena Vigorosa' has a very small light yellow basal spot.

Description:

PLANT: shrub type, semi-upright growth habit
YOUNG SHOOT: very strong intensity of anthocyanin colouration
PRICKLES: medium number, yellowish

NEWLY OPENED LEAFLET (UPPER SIDE): strong intensity of anthocyanin colouration
LEAF: medium size, dark green colour on upper side, no anthocyanin colouration, strong glossiness on upper side, absent or very weak undulation of margin
TERMINAL LEAF BLADE: ovate, rounded base, acuminate apex

FLOWERING SHOOT: medium number of flowering laterals, very few flowers per lateral
FLOWER BUD: medium ovate in longitudinal section, brown green (RHS 146C)
FLOWER: double type, red blend colour group, yellow centre, medium petal density, irregularly rounded, flattened convex when viewed from above, flat profile of lower part, absent or weak fragrance, absent or very weak sepal extensions
PETAL: no reflexing of petals one-by-one, rounded, absent or very weak incisions, absent or very weak reflexing of margin, weak undulation, one colour on inner side, even colour on inner side, purple red (RHS N57A) on inner side, purple red (RHS N57C) on outer side
BASAL SPOT (INNER SIDE OF PETAL): small, medium yellow
OUTER STAMEN: filament predominantly medium yellow
SEED VESSEL: small at petal fall
HIP: pitcher-shaped

Origin & Breeding History: 'VLR002' originated from a cross conducted at the Vineland Research and Innovations Centre Inc. in 2012 between the female parent selection '60' and the male parent selection '564'. The parent varieties were developed at Agriculture and Agri-Food Canada, Morden Research Station in Manitoba and moved to Vineland Research Station in 2010 and 2011 respectively, prior to the initial cross which resulted in 'VLR002'. In 2014, seedlings of 'VLR002' were evaluated at Vineland Research Station based on flower colour, flower type, flower abundance, plant growth habit and disease tolerance. Plants were distributed to nine other locations across Canada in 2015 for further evaluation.

Tests & Trials: The comparative trial for 'VLR002' was conducted outdoors during the summer of 2018 at the Vineland Research and Innovations Centre Inc. located in Vineland Station, Ontario. The trial included 6 plants each of the candidate and reference variety. One year old plants of 'VLR002' and two year old plants of the reference variety, were transplanted into 11 litre containers in April 2018. Observations and measurements were taken from 6 plants, or 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 'VLR002' with reference variety 'Siena Vigorosa'

Number of petals

  'VLR002' 'Siena Vigorosa'
mean 18.6 22.8
std. deviation 1.44 1.4

Petal length (cm)

  'VLR002' 'Siena Vigorosa'
mean 3.0 2.6
std. deviation 0.25 0.18

Petal width (cm)

  'VLR002' 'Siena Vigorosa'
mean 2.6 2.0
std. deviation 0.19 0.21

Colour of inner side of petal (RHS)

  'VLR002' 'Siena Vigorosa'
main N57A 55B
secondary N/A 23D at base

Click on image for larger view
VLR002
Rose: 'VLR002' (right) with reference variety 'Siena Vigorosa' (left)

Click on image for larger view
VLR002
Rose: 'VLR002' (left) with reference variety 'Siena Vigorosa' (right)

Click on image for larger view
VLR002
Rose: 'VLR002' (left) with reference variety 'Siena Vigorosa' (right)

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