ROSE
Rosa
‘Korbasren’ syn Pink Bassino
Application No. 1996/087 Accepted: 19 Apr 1996.
Applicant: W. Kordes’ Sohne, Klein Offenseth-Sparrieshoop, Germany.
Agent: Treloar Roses Pty Ltd, Portland, VIC.

Description (see comparative table) Plant: groundcover, flat bushy, growth spreading. Young shoot: anthocyanin colouration absent. Thorns: present, density medium, uniform size, very long (mean 10.1mm), upper side flat to slightly convex, lower side strongly concave, colour red. Leaf: size medium, colour light to medium green, upper surface semi-gloss. Terminal leaflet: cross section concave, margin undulation present, weak, length medium (mean 52.5mm), width medium (mean 31.2mm), base shape round, petiolule length medium (mean 14.2mm). Flowering shoot: clusters, very many flowers, cluster shape conical. Flower pedicel: medium density stiff glandular hairs and small thorns, few colourless hairs. Flower bud: shape ovate, colour pink and white stripes when sepals separate. Flower: type single, petal number few (5-7), diameter medium (mean 68.9mm), view from above irregularly round, upper profile flat, lower profile very flat flattened convex, fragrance absent to very weak, colour light bluish pink. Sepal: length short (mean 18.3mm), extensions medium. Flower petal: size small, reflexing of margins absent or very weak, margin undulations weak, inside surface; colour light pink middle zone and margin RHS 62A, basal spot; present, size large boundary well defined, colour yellowish white RHS 2D. Outside surface; colour yellowish white tinged pink middle zone and margin near RHS 49C, basal spot absent or ill-defined, colour RHS 2D. Stamen: colour rich yellow, anthers curled inwards. Style: colour pale green. Stigma slightly below or same height as anther. Seed vessel: size small, shape pear. Flowering: remontant.

Origin Controlled pollination: (‘The Fairy’ x seedling of R. wichuraiana) by ‘Interrop’ syn Eye Opener. Breeder: Wilhelm Kordes, Klein Offenseth-Sparrieshoop, Germany. Selection criteria: good garden rose. Propagation: vegetatively through numerous generations.

Comparative Trial Comparator: ‘Bonica’. Location: Portland, Victoria, Autumn 1998. Conditions: trial conducted in field. 10 month old multiflora rootstock budded Dec 1997, descriptions made on natural first growth 4 months later, no pruning. Good cultural practices maintained all times. Trial design: grown as double rows along with other varieties. Measurements: minimum of 20 taken at random from 20 plants.

Prior applications and Sales

Country Year Status Name applied
Germany 1994 Granted ‘Korbasren’
UK 1994 Granted ‘Korbasren’
Switzerland 1995 Granted ‘Korbasren’

First sold in Germany 1995.

Description: Dr. Brian Hanger, Rosemary Ridge Pty Ltd, Monbulk, VIC.

Comparison of Rosa varieties
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‘Korbasren’ *‘Bonica’
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THORN LENGTH(mm)
mean 10.1 5.9
std deviation 1.4 0.7
LSD/sig 0.8 P£0.01
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TERMINAL LEAFLET LENGTH(mm)
First or second true leaf down from flower cluster
mean 52.5 37.5
std deviation 6.0 3.8
LSD/sig 3.8 P£0.01
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TERMINAL LEAFLET WIDTH(mm)
mean 31.2 22.5
std deviation 3.6 2.2
LSD/sig 2.3 P£0.01
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TERMINAL LEAFLET PETIOLULE LENGTH (mm)
mean 14.2 12.6
std deviation 2.6 1.4
LSD/sig 1.3 P£0.01
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FLOWER DIAMETER (mm)Fully open
mean 68.9 74.8
std deviation 4.9 6.1
LSD/sig 4.9 P£0.01
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SEPAL LENGTH (mm)
mean 18.3 19.6
std deviation 1.6 1.4
LSD/sig 1.1 P£0.01
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LEAFLET BASE SHAPE
round obtuse
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TERMINAL LEAFLET CROSS SECTION
concave strongly
concave
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NUMBER OF PETALS
few medium to
many
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SEPAL EXTENSIONS
medium weak
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PETAL COLOUR (RHS)
midzone outside near 49C near 65A
midzone inside 62A 62C
margin outside near 49C near 65A
margin inside 62A 62C
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STAMEN FILAMENT COLOUR
rich yellow pale greenish
yellow
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