56. Volume 12- Number 2 - IP Australia

PLANT VARIETIES JOURNAL 1999 VOL 12 NO. 2
ROSE
Rosa hybrid
‘Auscent’ syn John Clare
Application No. 98/084 Accepted: 5 Jun 1998.
Applicant: David Austin Roses Ltd, Wolverhampton, UK.
Agent: Perfumed Roses Pty Ltd, Moorooduc, VIC.
Characteristics ( Figure 1) Plant: growth habit: small bush
rose, growth semi dense, height medium, width medium to
broad, flower stems stained purplish red to red. Young
shoot: anthocyanin colouration strong, colour reddish
brown to purple. Thorns: present, shape (upper surface
catena), lower surface flat (strongly concave), density high,
length short (mean 3.9mm). Leaf: size medium to large,
colour medium, upper surface dull to weak gloss, cross
section slightly concave, margin undulation absent to very
weak. Terminal leaflet: length medium (mean 43.8mm),
width broad (mean 34.0mm), petiolule length medium
(mean 20.9mm), base shape round. Flowering shoot:
flower number few to medium. Flower pedicel: hairs or
prickles medium. Bud: shape broad ovate to ovate. Flower:
type double, petal number many to very many, diameter
medium to large (mean 107.9mm), viewed from above
round, side profile; upper half flattened convex, lower
convex (to flat), fragrance weak. Sepal: extensions strong,
(length mean 26.8mm). Petal: size medium to large, inside
surface colour; marginal and midzone near red purple RHS
72C but slightly paler, basal spot present, size small, colour
yellow RHS 4C (RHS 9B, 1986); outside surface; marginal
and midzone near RHS 74C but paler, basal spot present,
size small to medium, colour yellow RHS 4D (RHS 9C,
1986), petal margin undulation very weak to weak,
reflexing of margin weak. Stamen filament: colour yellow.
(Style: colour yellow. Stigma height slightly below anther).
Seed vessel: small to medium. Hip: shape pitcher.
Flowering habit: twice flowering (remontant). (Note: Data
in parenthesis from local observations and measurements).
Origin and Breeding Controlled pollination: ‘Wife of
Bath’ x unnamed seedling. Selection criteria: prolific flower
production, quality flower of attractive form and colour.
Propagation: vegetatively through numerous generations.
Breeder: David Austin, Albrighton, Wolverhampton,
England, UK.
Choice of Comparators ‘The Reeve’ was chosen as the
comparator because of a similarity in flower colour and
plant size. Petal colour both surfaces of outer petals in
colour range RHS 73C-73D ,1986. ‘The Reeve’ differed in
having weak anthocyanin staining of shoot, round bud, style
stained red, large seed vessel. The parent plant ‘Wife of
Bath’ was not considered because of its clearly different
flower colour.
Comparative Trial Description based on official United
Kingdom PBR documents, and data confirmed by local
observations and measurements. Location: Moorooduc,
VIC, Autumn 1999. Conditions: In 1997, variety budded
onto virus tested Rosa multiflora rootstock and in Jul 1998
transferred to 300mm pots filled with a pinebark based
potting mixture, and held in a non-heated greenhouse until
Nov 1998 when trial set up in a wind protected outdoor
area; nutrition maintained with slow release fertilisers and
liquid feeds; plants sprayed regularly to ensure good health.
Trial design: randomised block of pots to provide a
minimum of 10 mature plants each of the variety and
comparators. Growth and phenotypic characteristics of
fully grown plants in a display garden also monitored.
Measurements: minimum of 20 taken at random from all
plants. Leaf measurements made on first or second 5-7
leaflet leaf down from inflorescence, thorns assessed on
stem tissue in vicinity of measured leaves. Climatic
condition: high light intensity and temperatures.
Prior Applications and Sales
Country Year Current Status Name Applied
UK 1994 Granted ‘Auscent’
EU 1996 Granted ‘Auscent’
Japan 1995 Applied ‘Auscent’
New Zealand 1995 Applied ‘Auscent’
First sold in England in 1994.
Description: Dr Brian Hanger, Rosemary Ridge Pty Ltd, Monbulk,
VIC.
‘Ausjo’ syn Jude the Obscure
Application No. 98/244 Accepted: 2 Feb 1999.
Applicant: David Austin Roses Ltd, Wolverhampton, UK.
Agent: Perfumed Roses Pty Ltd, Moorooduc, VIC.
Characteristics (Figure 2) Plant: growth habit bush rose,
open growth, height medium, width medium to broad, stem
growth strong, slightly arching. Young shoot: anthocyanin
colouration weak to medium, colour reddish hue. Thorns:
present, density medium, size uniform, length long (mean
6.4mm), shape upper surface slightly concave to flat, lower
surface strongly concave. Leaf: size medium to large,
colour medium to dark green, upper surface dull to weak
gloss, cross section concave to flat, margin undulation weak
to medium. Terminal leaflet: length medium (mean
57.5mm), width medium (mean 39.5mm), petiolule length
medium (mean 17.0mm) base shape obtuse. Flowering
shoot: flowers as singles or small clusters up to 5 (usually
2-3). Flower pedicel: few stiff glandular hairs. Bud: shape
broad ovate. Flower: type double, colour group yellow,
petal number very many, diameter medium (to large, mean
102.8mm), shape globular, viewed from above round, side
profile; upper convex, lower flat, fragrance strong. (Sepal:
extensions weak, length 27.9mm). Petal: size medium to
large, cupped, inside surface colour; marginal zone RHS
16D (RHS 11D, 1986), midzone RHS 13C (RHS 10D,
1986), basal spot absent, point of attachment colour yellow
RHS 9A; outside surface; marginal zone RHS 20C (RHS
11D, 1986), midzone RHS 13C (RHS 9D, 1986) basal spot
absent, (point of attachment colour yellow RHS 9A 1986),
petal margin undulation absent to very weak, reflexing of
margin nil to very weak. Stamen filament: colour rich
yellow. Style: colour pale greenish white, streaked red near
stigma. (Stigma lower than anther). Seed vessel: size
medium, shape pitcher. Flowering habit: remontant. (Note:
Data in parenthesis from local observations and
measurements)
Origin and Breeding Controlled pollination: unnamed
seedlings within breeder’s collection. Selection criteria:
quality flower of attractive colour and perfume, healthy
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