44. Volume 15- Number 2 - IP Australia

DESCRIPTIONS
PLANT VARIETIES JOURNAL 2002 VOL 15 NO. 2
LEAF GREEN COLOUR
medium medium to dark
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LEAF GLOSSINESS OF UPPERSIDE
weak
strong
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TERMINAL LEAFLET SHAPE OF BASE
obtuse
rounded
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FLOWER PEDICEL NUMBER OF HAIRS OR PRICKLES
medium many
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FLOWER BUD:SHAPE OF LONGITUDINAL SECTION
(JUST BEFORE SEPARATION OF SEPAL)
broad-ovate round
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SEMI-DOUBLE AND DOUBLE FLOWERS NUMBER OF
PETALS
many (26-50) very many (>50)
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FLOWER VIEW FROM ABOVE
irregularly round round
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FLOWER FRAGRANCE
strong
medium
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SEPAL EXTENSIONS
strong
medium
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PETAL COLOUR OF MIDDLE ZONE OF INNER SIDE (RHS
2001)
73C – D fading 73C – D
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PETAL COLOUR OF MARGINAL ZONE OF INNER SIDE
(RHS 2001)
73C – D fading 73C – D
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PETAL SIZE OF SPOT AT BASE OF INNER SIDE
small
medium
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PETAL COLOUR OF SPOT AT BASE OF INNER SIDE (RHS
2001)
4B
9C
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PETAL COLOUR OF MIDDLE ZONE OF OUTER SIDE
(RHS 2001)
73C – D fading 73D
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PETAL COLOUR OF MARGINAL ZONE OF OUTER SIDE
(RHS 2001)
73C – D fading 73D
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PETAL COLOUR OF SPOT AT BASE OF OUTER SIDE (RHS
2001)
4B
9C
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‘MASmabay’ syn Martine Guillot
Application No: 2001/265 Accepted: 26 Sep 2001
Applicant: Roseraies Pierre Guillot, Cremieu, France.
Agent: The Rose Garden Pty Ltd Trading as Walter
Duncan Roses, Watervale SA
Characteristics (Table 30, Figure 4) Plant growth habit
bushy, height medium, width (excluding creeping varieties)
medium. Young shoot: anthocyanin colouration weak, hue
of anthocyanin bronze. Prickles present, shape of lower side
concave. Short prickles: number absent or very few. Long
prickles: number medium. Leaf: size medium (49mm x
34mm), green colour medium, glossiness of upper side
medium. Leaflet: cross section concave, undulation of
margin, weak. Terminal leaflet: length of blade medium
width of blade medium, shape of base obtuse. Flowering
shoot: number of flowers many, Flower: pedicel number of
hairs or prickles few-absent, bud: shape of longitudinal
section (just before separation of sepal) round, type double,
Semi-double and double flowers -number of petals many,
diameter medium, view from above irregularly round, side
view of upper part (fully opened flower flat, side view of
lower part flattened convex, fragrance medium. Sepal:
extensions weak. Petal: size medium, colour of middle zone
of inner side white RHS N155C, colour of marginal zone of
inner side white RHS N155B, spot at base of inner side
present, size of spot at base of inner side small, colour of
spot at base of inner side 3C, colour of middle zone of outer
side white RHS N155C, colour of marginal zone of outer
side white RHS N155D, spot at base of outer side present,
size of spot at base of outer side very small, colour of spot
at base of outer side 3C, reflexing of margin weak,
undulation of margin weak. Outer stamen: predominate
colour of filament orange. Seed vessel: small. Hip: shape of
longitudinal section funnel shaped. Flowering season
timing medium. Flowering habit: almost continuous. (Note:
all colour chart numbers refer to the RHS 2001 edition.)
Origin and Breeding Controlled pollination. Seed parent
‘New Dawn’ x pollen parent ((‘Chaucer’ x ‘Aloha’) x
(‘Iceberg’ x “unnamed seedling”)). Selection criteria:
flower colour, form of flower, disease resistance, plant
vigour and tolerance to cold. Propagation: Seed was
harvested, stratified, germinated then grown to maturity for
assessment. Further propagation was by graft onto a
suitable virus indexed rootstock. Breeder: Roseraies Pierre
Guillot, Cremieu, France.
Choice of Comparators Grouping characteristics used in
identifying the most similar varieties of common
knowledge were: flower colour white, flower form double
and plant habit bushy. Based on these characteristics two
varieties were selected: ‘Iceberg’, and ‘Seafoam’.
‘Seafoam’ was later excluded on the basis that it has very
small leaves and low spreading growth habit. Exclusion of
the remaining parents were based on the following
characteristics: ‘Aloha’ pink flower colour and climbing
plant habit, ‘Chaucer’ light pink flower colour, ‘New Dawn’
pale pink flower colour and climbing plant habit. ‘Iceberg’
is one of the background parents.
Comparative Trial Location: Sevenhill SA, Spring 2001-
Autumn 2002. Conditions: trial conducted in an open field
situation with overhead watering, fertilizing, pest, disease
control and weeding, as necessary. Single budded onto virus
indexed Rosa ‘Dr Huey’ understock. Trial design: 25 plants
or each variety, in rows. Measurements: taken in Apr 2002
from 20 plants at random.
Prior Application and Sales
Country Year Current Status Name Applied
France 1996 Granted ‘Masmabay’
First sold in France in Nov 1997.
Description : Thomas Williams, Watervale, SA.
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