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Denomination: 'Poulcs012'
Trade name: Chambord
Botanical Name: Rosa
Applicant/Holder: Poulsen Roser A/S
Kratbjerg 332
Breeder: Mogens N. Olesen, Poulsen Roser A/S, Fredensborg, Denmark
Agent in Canada: Miller Thomson Pouliot LLP
1000 De La Gauchetière Street West, Suite 3700
Montréal, Quebec
H3B 4W5
Tel: 514-871-5449
Application Date: 2005-08-25
Application Number: 05-5039
Grant of Rights Date: 2008-12-30
Certificate Number: 3432
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2010-12-30
Date rights surrendered: 2013-04-18

Variety Description

Variety used for comparison: 'Poulac008' (Duke of Edinburgh)

Summary: 'Poulcs012' has darker green leaf colour than 'Poulac008'. 'Poulcs012' has lighter flower bud and overall flower colour than 'Poulac008'. 'Poulcs012' has a wider petal width than 'Poulac008'. 'Poulcs012' has weak reflexing of the petal margin while 'Poulac008' has medium to strong reflexing.


PLANT: upright to bushy, floribunda rose
YOUNG SHOOT: no anthocyanin colouration
PRICKLES/THORNS: concave, no short prickles, average number of long prickles, light green with yellow tips

ENTIRE LEAF: dark green, medium glossiness, five to seven leaflets
TERMINAL LEAFLET: serrate margin, thin texture, rounded or wedge shaped base

FLOWERING SHOOT: medium number of flowers per shoot, almost continuous flowering
PEDICEL: medium number prickles
FLOWER BUD: pointed, light yellow
FLOWER: fully opened flower round in shape when viewed from above, upper part flattened convex when viewed from the side, lower part concave when viewed from the side, very full type, overall colour yellow
PETALS: yellow on upper and lower side, no petal spot, weak reflexing and undulation of margin
REPRODUCTIVE ORGANS: yellow filament, medium length style, style yellow with red at top, stigma at same level as anthers, receptacle very small and pitcher shaped in longitudinal section, prickles present on receptacle

Origin & Breeding History: 'Poulcs012' originated from a cross between an unnamed seedling as the female parent and 'Poulsun' as the male parent. The cross was made in the summer of 1992 at Fredensborg, Denmark. Seeds from the cross were planted in December 1992 and germinated during the winter and early spring. 'Poulcs012' was selected in the spring of 1993. Selection criteria included uniform and abundant yellow flowers, vigorous but compact growth habit, disease resistance and continuous flowers.

Tests & Trials: The test and trial for 'Poulcs012' was conducted in the field during the summer of 2007 in St. Thomas, Ontario. The trial included 6 plants of each variety. One year old plants were planted in the field on June 5, 2007. Plants were grown in rows with plants spaced 60 cm apart and rows spaced 90 cm apart. Observations and measurements were taken on July 26, 2007. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Poulcs012' with reference variety 'Poulac008'

Colour of flower bud (RHS)

  'Poulcs012' 'Poulac008'
upper side 8B (darker than) 12B

Flower colour (RHS)

  'Poulcs012' 'Poulac008'
overall 4C 10A-B

Petal colour (RHS)

  'Poulcs012' 'Poulac008'
upper side - middle 4C 12B
upper side - margin 4D 10A
lower side - middle 2D 8B
lower side - margin 4D 10A

Petal width (cm)

  'Poulcs012' 'Poulac008'
mean 3.2 2.2
std. deviation 0.38 0.21

Click on image for larger view
Rose: 'Poulcs012' (left) with reference variety 'Poulac008' (right)

Click on image for larger view
Rose: 'Poulcs012' (left) with reference variety 'Poulac008' (right)

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