49. Volume 14- Number 1 - IP Australia

PLANT VARIETIES JOURNAL 2001 VOL 14 NO. 1
Chamelaucium megalopetalum x Chamelaucium
uncinatum
Waxflower
‘Albany Pearl’
Application No: 1998/097 Accepted: 30 Jun 1998.
Applicant: The State of Western Australia through its
department of agriculture called
Agriculture Western Australia, South Perth, WA.
Characteristics (Table 18, Figure 17) Plant: medium tall,
erect vigorous. Stem: thickness medium, branch angle
medium. Leaf: length medium, thickness thick, angle very
narrow, apex acute. Flowering time: early. Flower:
arrangement narrow distal, density medium, diameter
medium. Bud: main colour with cap greenish white (RHS
157C), without cap white (RHS 155A). Petal: colour first
opened white (RHS 155B), 2 weeks and 6 weeks after
opening white (RHS 155A). Flower nectary: colour first
opened yellow green (RHS 150A), 2 weeks and 6 weeks
after opening yellow green (RHS 153C). Staminodia:
outline narrow triangular, collar colour yellow white. Style:
colour mature white. Calyx tube: longitudinal furrowing
medium, outline conical, diameter medium, mid-point
colour at mid maturity yellow green (RHS 144C). (Note: all
RHS colour chart numbers refer to 1986 edition.)
Origin and Breeding Single hybrid plant selection: from
open pollination of C. megalopetalum and C. uncinatum
‘Alba’ in a commercial planting at Flynn Rd, Wanneroo,
WA and originally coded as HI 1. Selected at Wanneroo in
Aug or Sep 1993. Vegetatively propagated plants were
produced from the seedling in 1994 and found to be stable.
Subsequent cutting propagated generations were produced
in 1995, 1996 and 1997. All of these plants were found to
be uniform and stable. The parentage was confirmed by
DNA fingerprinting in 2000. ‘Albany Pearl’ was selected
with seven other varieties of similar parentage ✝ . Selection
criteria: early flowering, pure white flower and green
nectary over extended period, vigorous growth.
Propagation: cutting. Breeder: Agriculture Western
Australia.
Choice of Comparators ‘Madonna’ A , ‘Blondie’ A ,
‘Esperance Pearl’ and ‘Denmark Pearl’ were considered as
the most similar varieties on the basis of common
parentage. The parents were not considered for the trial
because ‘Albany Pearl’ has intermediate features between
the two parents, including flower shape, flower
presentation, leaf size, leaf shape, and size and form of the
mature plants. ‘Albany Pearl’ is clearly distinguishable from
the C. megalopetalum parent which is the most similar, by
its vigorous growth habit and petal colour at late maturity.
‘Early Bird’ was excluded as ‘Albany Pearl’ is clearly
distinguishable by its lack of hooked leaf tips; longer flower
pedicel; less tight clusters of flowers; distinct cup-shaped
flowers; and different parentage. ‘Winter White’ was
excluded because it is distinguishable by its much smaller
calyx tube diameter; green nectary; flat; and separated petal
formation instead of cup-shaped.
Comparative Trial Location: Agriculture Western
Australia Research Station, Medina, WA. Conditions:
plants propagated by cuttings and planted in open field of
sandy soil with drip irrigation and fertigation. Trial design:
15 plants of each variety, replicated randomised block
design. Measurements: made on 20 typical organs from all
plants.
Prior Applications and Sales Nil.
Description: Philip Watkins, Sunglow Flowers Pty Ltd, Perth, WA and
Digby Growns, Agriculture WA, Geraldton, WA.
‘Denmark Pearl’
Application No: 1998/096 Accepted: 30 Jun 1998.
Applicant: The State of Western Australia through its
department of agriculture called Agriculture Western
Australia, South Perth, WA.
Characteristics (Table 18, Figure 17) Plant: short to
medium tall, erect vigorous. Stem: thickness medium,
branch angle medium. Leaf: length long, thickness medium,
angle medium, apex acute to slight hook. Flowering time:
medium. Flower: arrangement narrow distal, density
medium to dense, diameter medium to large. Bud: main
colour with cap red (RHS 43B), without cap white (RHS
155A). Petal: colour first opened white (RHS 155B), 2
weeks after opening white (RHS 155B), 6 weeks after
opening white (RHS 155B). Flower nectary: colour first
opened greyed yellow (RHS 160A), 2 weeks and 6 weeks
after opening yellow green (RHS 153C). Staminodia:
outline narrow triangular, collar colour white. Style: colour
mature white. Calyx tube: longitudinal furrowing absent to
slight, outline flared, diameter medium, mid-point colour at
mid maturity yellow green (RHS 144C). (Note: all RHS
colour chart numbers refer to 1986 edition.)
Origin and Breeding Single hybrid plant selection: from
open pollination of C. megalopetalum and C. uncinatum
‘Alba’ in a commercial planting at Flynn Rd, Wanneroo,
WA and originally coded HI 7. Selected at Wanneroo in Aug
or Sept 1993. Vegetatively propagated plants were produced
from the seedling in 1994 and found to be stable.
Subsequent cutting propagated generations were produced
in 1995, 1996 and 1997. All of these plants were found to
be uniform and stable. The parentage was confirmed by
DNA fingerprinting in 2000. ‘Denmark Pearl’ was selected
with seven other varieties of similar parentage ✝ . Selection
criteria: mid-season flowering, pure white flower and green
nectary over extended period, vigorous growth, dense
flower heads. Propagation: cutting. Breeder: Agriculture
Western Australia.
Choice of Comparators ‘Madonna’ A , ‘Blondie’ A ,
‘Esperance Pearl’ and ‘Albany Pearl’ were considered as the
most similar varieties on the basis of common parentage.
The parents were not considered for the trial because
‘Denmark Pearl’ has intermediate features between the two
parents, including flower shape, flower presentation, leaf
size, leaf shape, and size and form of the mature plants.
‘Denmark Pearl’ is clearly distinguishable from the C.
megalopetalum parent which is the most similar, by its
vigorous growth habit and petal colour at late maturity.
‘Winter White’ was excluded because it is distinguishable
by its much smaller calyx tube diameter; green nectary; flat
and separated petal formation instead of cup-shaped.
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