52. Volume 13- Number 2 - IP Australia

PLANT VARIETIES JOURNAL 2000 VOL 13 NO. 2
Comparative Trial Comparators: ‘Eclipse’ A , ‘Noble’ A ,
‘Dargo’ A , ‘Flanker’ A , ‘Surrey’, ‘Progrow’ A , ‘Corvette’.
Location: Whittlesea, VIC, spring-summer of 1999.
Conditions: planted as spaced plants in open beds, managed
for even and uniform growth. Trial design: 60 spaced plants
of each variety arranged in randomised complete blocks
with 6 replicates. Measurements: from all trial plants.
Prior Applications and Sales
Country Year Current Status Name Applied
Denmark 1996 Withdrawn ‘Dargle’
South Africa 1996 Granted ‘Dargle’
First sold in South Africa in Jan 1994. First Australian sales
in Mar 1998.
Description: Ian Aberdeen, Aberdeen Consulting Pty Ltd., Kilmore, VIC.
Table 28 Lolium varieties
‘Dargle’ *‘Eclipse’ A *‘Noble’ A *‘Dargo’ A *‘Flanker’ A *‘Surrey’ *‘Progrow’ A *‘Corvette’
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FLAG LEAF LENGTH (mm)
mean 263.79 260.89 256.69 228.97 273.44 247.50 270.30 269.55
std deviation 41.72 51.41 41.62 54.09 64.37 55.76 66.13 56.64
LSD/sig 23.92 ns ns P≤0.01 ns ns ns ns
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FLAG LEAF WIDTH (mm)
mean 11.05 10.72 10.71 9.61 9.94 10.97 11.00 10.32
std deviation 1.42 1.79 1.47 1.61 1.26 1.73 1.78 1.51
LSD/sig 0.70 ns ns P≤0.01 P≤0.01 ns ns ns
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PULLED STEM LENGTH (cm)
mean 106.45 95.98 105.28 107.77 103.72 103.48 101.60 103.03
std deviation 11.36 17.19 13.56 16.66 11.01 15.03 14.60 12.36
LSD/sig 6.13 P≤0.01 ns ns ns ns ns ns
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DAYS TO HEADING (from 30/09/99)
mean 53.51 57.36 51.84 34.47 50.05 38.98 48.83 47.99
std deviation 9.78 7.54 9.92 8.04 10.59 10.79 9.14 8.84
LSD/sig 4.04 ns ns P≤0.01 ns P≤0.01 ns P≤0.01
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SPIKE LENGTH (mm)
mean 311.66 283.09 302.50 317.74 323.74 324.58 324.74 327.81
std deviation 46.28 47.57 43.84 59.86 47.68 71.48 53.46 50.72
LSD/sig 23.73 P≤0.01 ns ns ns ns ns ns
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SPIKELET DENSITY (number /100 mm of spike)
mean 13.91 12.61 15.70 12.72 12.37 12.20 12.49 12.88
std deviation 3.12 2.74 3.55 3.30 2.59 2.80 2.71 2.86
LSD/sig 1.31 ns P≤0.01 ns P≤0.01 P≤0.01 P≤0.01 ns
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SPIKELET LENGTH (mm)
mean 17.93 17.38 18.20 19.35 16.36 18.42 20.00 17.83
std deviation 2.35 11.40 2.88 4.04 2.98 3.51 2.43 2.97
LSD/sig 1.39 ns ns ns ns ns P≤0.01 ns
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Lolium perenne
Perennial Ryegrass
‘Quartet’
Application No: 1998/136 Accepted: 3 Dec 1998.
Applicant: Wrightson Seeds Ltd, Christchurch, New
Zealand.
Agent: Wrightson Seeds (Australia) Pty Ltd , Melbourne,
VIC.
Characteristics (Table 29) Plant: late maturing (64.7 days
to head), colour dark. Stem: length medium (672mm),
rachis internode length medium (133mm), number of nodes
medium (3.6). Leaf: vegetative length long (227mm),
vegetative width narrow (6.67mm), flag leaf length long
(208mm), flag leaf width broad (8.6mm). Inflorescence:
spike length medium (267mm), spikelets per spike
numerous (29.7), spikelet length medium (17.4mm), glume
length medium (11.6mm)
Origin and Breeding Induced tetraploidy: 3 cycles of
selection at the diploid level and 3 cycles of selection at the
tetraploid level within rye grass plants originating from
New Zealand old dairy pasture and collected by Wrightson
Seeds with permission from the farmer. After three cycles of
selection at the diploid level the plants designated as Lp90-
108 showed extraordinarily late maturity and tiller density.
Seedlings of Lp90-108 were then treated with colchicine to
induce tetraploidy. In the 6th selection cycle, 4 elite families
were selected from the Lp90-108 – C3 plants to become
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