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Denomination: 'Meimirrote'
Botanical Name: Rosa
Applicant/Holder: The Conard-Pyle Company
8 Federal Road, Suit 6
West Grove, Pennsylvania
United States of America
Breeder: Alain Meilland, Meilland International, Le Luc en Provence, France
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2012-01-03
Application Number: 12-7470
Grant of Rights Date: 2016-11-29
Certificate Number: 5389
Grant of Rights Termination Date: 2036-11-29

Variety Description

Variety used for comparison: 'NOA97400A' (Flower Carpet Amber)

Summary: The leaf of 'Meimirrote' is small to medium sized while the leaf of 'NOA97400A' is medium to large. The upper side of the leaf of 'Meimirrote' is of medium glossiness while that of 'NOA97400A' has strong glossiness. The flower of 'Meimirrote' is a double type with a greater number of petals than the flower of 'NOA97400A', which is a semi-double type. The petal of 'Meimirrote' is smaller than that of 'NOA97400A'. The inner side of the petal of 'Meimirrote' is orange brown fading to light blue pink and further fading to lighter blue pink while that of 'NOA97400A' is orange fading to orange red and further fading to red pink. The outer stamen of 'Meimirrote' has a pink filament while that of 'NOA97400A' is medium yellow.


PLANT: shrub type, semi-upright to intermediate growth habit
YOUNG SHOOT: medium intensity of anthocyanin colouration
PRICKLES: few, reddish

LEAF: small to medium size, medium to dark green on upper side, no anthocyanin colouration on upper side, medium glossiness on upper side
LEAFLET: weak undulation of the margin
TERMINAL LEAFLET: ovate, rounded base, acuminate apex

FLOWERING SHOOT: no flowering laterals, medium number of flowers
FLOWER BUD: medium ovate in cross-section
FLOWER: double type, orange blend colour group, medium density of petals, round shape when viewed from above, upper part is flattened convex when viewed from side, lower part is concave when viewed from side, absent or weak fragrance, no reflexing of petals one-by-one
SEPAL: absent or very weak extensions
PETAL: small to medium sized, obcordate shape, inner side has one colour evenly distributed throughout, inner side is orange brown (RHS 33C) fading to light blue pink (RHS 54D) and fading further to lighter blue pink (RHS 55D) with age, absent or very weak incisions of margin, weak reflexing of margin, weak undulation of margin; basal spot medium sized, light yellow

OUTER STAMEN: predominant pink colour of filament

SEED VESSEL: small at time of petal fall
HIP: pitcher-shaped in longitudinal section

Origin & Breeding History: 'Meimirrote' originated from a hybrid cross conducted by the breeder in Le Luc en Provence, France. The cross was made between the variety 'The Fairy', as the female parent, and an unnamed proprietary seedling, as the male parent, in June 1999. In September 2009, 'Meimirrote' was selected from the resulting hybrid Rosa seedlings based on its spreading growth habit, attractive foliage and flower colour.

Tests & Trials: The comparative trial for 'Meimirrote' was conducted outdoors during the summer of 2015 at Variety Rights Management in Oxford Station, Ontario. The trial included a total of 15 plants of the candidate variety and 5 plants of the reference variety. All plants were grown in 22 cm pots spaced 45 cm apart. Observations and measurements were taken from 10 plants, or parts of plants, of the candidate variety, and 5 plants, or 10 parts of plants, of the reference variety in early September 2015. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Meimirrote' with reference variety 'NOA97400A'

Number of petals per flower (count)

  'Meimirrote' 'NOA97400A'
mean 20.1 9.0
std. deviation 2.38 1.66

Petal length (cm)

  'Meimirrote' 'NOA97400A'
mean 2.4 3.0
std. deviation 0.24 0.21

Petal width (cm)

  'Meimirrote' 'NOA97400A'
mean 2.4 2.8
std. deviation 0.20 0.17

Colour of petal (RHS)

  'Meimirrote' 'NOA97400A'
inner side 33C fading to 54D then to 55D 24B-C fading to 41C then to 48D

Click on image for larger view
Rose: 'Meimirrote' (left) with reference variety 'NOA97400A' (right)

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