VLR001

Rose

Variety Description

Varieties used for comparison: 'Morden Sunrise' and 'Singin' in the Rain'

Summary: The plant of 'VLR001' has a semi-upright growth habit whereas the plants of both reference varieties are upright. The young shoot of 'VLR001' has a very weak intensity of anthocyanin colouration whereas the young shoot of 'Morden Sunrise' has a weak intensity of anthocyanin colouration and that of 'Singin' in the Rain' has strong anthocyanin colouration. The upper side of the newly opened leaflet of 'VLR001' has a weak intensity of anthocyanin colouration whereas that of 'Singin' in the Rain' has strong anthocyanin colouration. The flowers of 'VLR001' are semi-double type whereas the flowers of 'Singin' in the Rain' are double type. The petals of 'VLR001' have absent or very weak reflexing of the margin whereas the petals of 'Singin' in the Rain' have strong reflexing of the margin. The inner side of the petal of 'VLR001' is orange pink whereas the inner side of the petal of 'Morden Sunrise' is orange pink with yellow at the base and that of 'Singin' in the Rain' is darker orange pink. The basal spot on the inner side of the petal of 'VLR001' is small and light yellow while the basal spot on the petal of 'Morden Sunrise' is large and medium yellow and that of 'Singin' in the Rain' is medium sized and medium yellow.

Description:

PLANT: shrub type, semi-upright growth habit
YOUNG SHOOT: very weak intensity of anthocyanin colouration
PRICKLES: few, yellowish

NEWLY OPENED LEAFLET (UPPER SIDE): weak intensity of anthocyanin colouration
LEAF: medium green on upper side, no anthocyanin colouration, medium degree of glossiness on upper side, weak undulation of margin
TERMINAL LEAF BLADE: medium elliptic, obtuse base, acuminate apex

FLOWERING SHOOT: few flowering laterals, few flowers per lateral
FLOWER BUD: elliptic in longitudinal section, green (RHS 143C)
FLOWER: semi-double type, yellow blend colour group, yellow centre, loose petals, irregularly rounded, flat when viewed from above, concave profile of lower part, medium strength fragrance, weak sepal extensions
PETAL: no reflexing of petals one-by-one, rounded, absent or very weak incisions, absent or very weak reflexing of margin, absent or very weak undulation, one colour on inner side, even colour on inner side, orange pink (RHS 27C) on inner side
BASAL SPOT (INNER SIDE OF PETAL): small, light yellow
OUTER STAMEN: filament predominantly medium yellow
SEED VESSEL: small at petal fall
HIP: pear-shaped

Origin & Breeding History: 'VLR001' originated from a cross conducted by the breeders Rumen Conev and Parminderjit Sandhu at the Vineland Research and Innovations Centre Inc. in 2011. The female parent selection '20ALFR05' and the male parent selection '27YSP0412' were developed at Agriculture and Agri-Food Canada, Morden Research Station in Manitoba and subsequently moved to Vineland Research Station in 2010, prior to the initial cross which resulted in 'VLR001'. In 2013, seedlings of 'VLR001' were evaluated based on flower colour, flower abundance, plant growth habit; and disease tolerance to blackspot, Cercospora leaf spot and powdery mildew. Plants were distributed to nine other locations across Canada in 2014 for further evaluation.

Tests & Trials: The comparative trial for 'VLR001' 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 varieties. One year old plants of 'VLR001' and two year old plants of both reference varieties 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 table for 'VLR001' with reference varieties 'Morden Sunrise' and 'Singin' in the Rain'

Colour of inner side of petal (RHS)

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Rose: 'VLR001' (left) with reference varieties 'Morden Sunrise' (centre) and 'Singin' in the Rain' (right)

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Rose: 'VLR001' (left) with reference varieties 'Morden Sunrise' (centre) and 'Singin' in the Rain' (right)

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Rose: 'VLR001' (left) with reference varieties 'Morden Sunrise' (centre) and 'Singin' in the Rain' (right)