54. Volume 12- Number 4 - IP Australia

PLANT VARIETIES JOURNAL 1999 VOL 12 NO. 4
shape elliptical. Mature leaf colour 144C (RHS, 1986).
Superior cold hardiness observed, with minimal leaf
discolouration and leaf drop.
Origin and Breeding Spontaneous mutation: from
Common form of Brunfelsia latifolia at applicant’s property
at Palmwoods, QLD. A mutated compact lateral side shoot
was removed from the mother plant and vegetatively
reproduced through over 8 generations to establish
uniformity and stability of the selection. The new variety is
characterised by very compact growth habit, which is
different from the normal form of the species. Selection
criteria: compact, dense branching habit. Propagation:
vegetatively through cuttings. Breeder Andrew Watkinson,
Palmwoods, QLD.
Choice of Comparators ‘Warwick’ was included, as it is
the most similar variety of common knowledge in
commercial production. ‘Compacta’ was included, as it is a
widely known smaller growing cultivar of B. latifolia. The
Common form of B. latifolia was included, as it is the
parental species.
Comparative Trial Comparator: ‘Warwick’ ‘Compacta’
and Common form of B. latifolia. Location: Florabundance
Wholesale Nursery, Verrierdale, QLD. Oct 1998-Nov 1999.
Conditions: plants from cuttings were grown in 200mm
pots in full sun conditions in composted pinebark and sand
media, with Osmocote ® as the primary fertiliser. Standard
pest and disease management applied as required. Trial
design: 30 plants of each variety arranged in randomised
rows. Measurements: taken from all trial plants.
Prior Applications and Sales
No prior applications. First sold in Australia 24 th Sep 1997.
Description: Tony Kebblewhite, Verrierdale, QLD.
Table 7 Brunfelsia varieties
‘Sweet & *‘Warwick’ *‘Compacta’ *B.
Petite’
latifolia
Common
Form
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PLANT HABIT
upright upright semi semi
broad narrow upright upright
spreading spreading spreading spreading
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LEAF MARGIN UNDULATION
weak weak strong weak
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LEAF COLOUR (RHS)
yellow green green yellow
green
green
144C 146A 144C 146A
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LEAF LENGTH (mm) – 6th leaf from tip
mean 58.26 61.54 61.40 57.42
std deviation 4.47 4.70 10.18 7.32
LSD/sig 4.77 ns ns ns
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LEAF WIDTH (mm) – 6th leaf from tip
mean 26.66 28.96 22.36 26.02
std deviation 2.16 2.48 3.80 2.81
LSD/sig 1.94 P≤0.01 P≤0.01 ns
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PETIOLE LENGTH (mm) – 6th leaf from tip
mean 3.66 4.10 4.78 4.49
std deviation 0.59 0.60 0.94 0.83
LSD/sig 0.51 ns P≤0.01 P≤0.01
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PETIOLE THICKNESS (mm) – 6th leaf from tip
mean 0.69 0.73 0.67 0.88
std deviation 0.006 0.005 0.018 0.012
LSD/sig 0.07 ns ns P≤0.01
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INTERNODE LENGTH (mm) – between 3rd and 4th internode
mean 5.30 7.19 13.81 12.96
std deviation 0.97 1.27 3.50 3.14
LSD/sig 1.68 P≤0.01 P≤0.01 P≤0.01
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NUMBER OF BASAL SHOOTS
mean 6.96 4.90 5.33 6.20
std deviation 1.42 1.18 1.53 2.61
LSD/sig 1.20 P≤0.01 P≤0.01 ns
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CANOLA
Brassica napus var oleifera
‘Charlton’
Application No: 98/196 Accepted: 14 Oct 1998.
Applicant: Agriculture Victoria Services Pty Ltd,
Attwood, VIC and Grains Research and Development
Corporation, Barton, ACT.
Characteristics (Table 8, Figure 36) Plant: habit erect,
height medium (90.5cm), medium maturing. Seedling:
cotyledons relatively narrow (width/length ratio 1.63), first
true leaf few or no hairs, 5th leaf mostly lobed, colour green
(RHS 137C/D, 1986). Flower: wide petals (length/width
ratio 2.2), anther dotting variable. Pods: long (58.2mm),
long beak (9.7mm), long pedicel (22.2mm). Seed: canola
quality, high oil content. Disease resistance: resistant to
blackleg disease. Maturity: medium.
Origin and Breeding Single plant selection: ‘Charlton’
was developed as a single plant selection in 1992 from a
breeding line, RF3 (this line was later released as
‘Dunkeld’ A in 1994). The selection work was carried out in
a blackleg nursery at Lake Bolac, VIC. Between 1993 and
1994, the line was evaluated for oil and protein content,
canola quality, yield potential, and disease resistance. In
1994, the line was identified as a promising advanced line
and was entered into the Interstate Stage 2 Canola Trials as
RI25. It was trialed in a number of locations covering all
canola-growing regions of Australia for three years, prior to
commercialisation and seed increase in 1997. ‘Charlton’ is
distinguishable from ‘Dunkeld’ by its cotyledon
width/length ratio, longer pods, longer beak and
significantly higher oil content in the seed. Selection
criteria: oil content, yield, Blackleg resistance, maturity.
Propagation: open pollinated seed. Breeder: Dr. P. A.
Salisbury, Victorian Institute for Dryland Agriculture,
Horsham, VIC.
Choice of Comparators ‘Dunkeld’ A and ‘Grouse’ A were
used as comparators. ‘Dunkeld’ A is the most similar variety
of common knowledge because ‘Charlton’ originated as a
selection from this variety. ‘Grouse’ A was included because
it is a prominent medium maturity variety of common
knowledge similar to the candidate.
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