49. Volume 14- Number 1 - IP Australia

PLANT VARIETIES JOURNAL 2001 VOL 14 NO. 1
Table 11 continued
BEAK LENGTH (mm)
mean 9.44 8.09 10.09
std deviation 1.53 1.79 1.65
LSD/sig 0.82 P≤0.01 ns
_______________________________________________
‘ATR Hyden’
Application No: 1999/349 Accepted: 29 Mar 2000.
Applicant: Ag-Seed Research Pty Ltd, Horsham, VIC.
Characteristics (Table 12, Figure 33) Plant: habit erect,
height medium tall (117cm), medium to early maturing.
Seedling: cotyledon relatively wide (width/length ratio 1.9),
first true leaf few hairs, 5th leaf mostly lobed (71.6%
lobed), colour green (RHS 137B-C, 1986). Flower: wide
petals (length/width ratio 1.6), anther dotting present. Pods:
medium length (47.5mm), pedicel medium (21.2mm), beak
medium (10.6mm). Seed: black, canola quality. Disease
Resistance: good blackleg resistance. Herbicide resistance:
tolerant to triazine herbicides.
Origin and Breeding Controlled pollination: ‘ATR Hyden’
was developed using a modified breeding method in 1998
from a backcross (BC 1 F 1 ), made in 1994, between seed
parent ‘Siren’ and pollen parent ‘Dunkeld’ A . The seed
parent was characterised by triazine tolerance, lower
seedling vigour, poor blackleg resistance, late maturity and
lower oil content. The pollen parent was characterised by
good seedling vigour, medium maturity, good blackleg
resistance and high oil content. Between 1995 and 1997 the
segregating material was selected for oil and protein
content, canola quality, yield potential, and disease
resistance in nurseries at Lake Bolac and Horsham. In 1999
the variety was entered into the Interstate Stage 2 Canola
Trials and then to Stage 4 in 2000, as AGA99-27, and was
trialled in a range of locations covering relevant canola
growing regions of Australia for two years. Propagation:
open pollinated seed. Breeder: Ag-Seed Research Pty Ltd
under a team headed by Dr. Gururaj Kadkol.
Choice of Comparators ‘Bugle’, ‘Karoo’ A and ‘TI1
Pinnacle’ A were used as comparators. ‘Karoo’ A has been
the leading early maturing triazine tolerant canola variety in
Australia since 1997. ‘TI1 Pinnacle’ A has been a major
medium maturing triazine tolerant canola variety in
Australia since 1997. ‘Bugle’ is included as a recently
released medium to early maturity triazine tolerant canola
variety. The parents were not included for reasons stated
above.
Comparative Trial Location: Comparative trials were
conducted at Ag-Seed Research trial site at Horsham, VIC.
Conditions: Field trials were conducted during 2000 season.
Glasshouse trials were carried out in 2000 and 2001. Trial
Design: data on mature plant characters were collected in
replicated field trials consisting of six row, 5m plots laid out
as randomised blocks. Seedling character data were
collected in glasshouse trials designed as completely
randomised trials. Measurement: data were recorded on 20
random plants from each of the three replicates giving a
total of 60 observations per variety.
Prior Applications and Sales
No prior applications. First sold in Australia in Mar 2001.
Description: Paul Rudolph, Ag-Seed Research Pty Ltd. Horsham, VIC.
Table 12 Brassica varieties
‘ATR *‘Bugle’ *‘Karoo’ A *‘TI1
Hyden’
Pinnacle’ A
____________________________________________________
COTYLEDON WIDTH/LENGTH
mean 1.902 1.835 2.105 1.868
std deviation 0.121 0.106 0.136 0.122
LSD/sig 0.057 P≤0.01 P≤0.01 ns
____________________________________________________
EXTENT OF HAIRS ON FIRST TRUE LEAF
absent 12 0 20 28
few 41 48 26 32
numerous 7 12 4 0
____________________________________________________
PERCENTAGE OF LEAF LOBING
present 71.6 86.6 65.0 96.6
____________________________________________________
LOBE NUMBER PER LEAF WITH LOBES
mean 2.88 3.07 2.71 3.45
____________________________________________________
DAYS TO 50% FLOWERING
111 111 108 114
____________________________________________________
PETAL LENGTH/WIDTH
mean 1.66 2.13 1.66 1.83
std deviation 0.09 0.19 0.11 0.15
LSD/sig 0.06 P≤0.01 ns P≤0.01
____________________________________________________
PERCENTAGE OF ANTHER DOTTING
present 100 96.6 100 90.0
____________________________________________________
PLANT HEIGHT (cm)
mean 117.0 103.3 108.6 110.3
std deviation 6.94 6.78 6.46 7.12
LSD/sig 3.5 P≤0.01 P≤0.01 P≤0.01
____________________________________________________
SILIQUA LENGTH (mm)
mean 47.5 46.9 46.4 49.3
std deviation 4.98 5.63 5.43 4.38
LSD/sig 2.3 ns ns ns
____________________________________________________
PEDICEL LENGTH (mm)
mean 21.2 20.1 18.5 17.5
std deviation 3.76 4.81 4.17 3.79
LSD/sig 1.88 ns P≤0.01 P≤0.01
____________________________________________________
BEAK LENGTH (mm)
mean 10.55 11.43 10.22 8.09
std deviation 1.72 1.86 1.84 1.79
LSD/sig 0.82 P≤0.01 ns P≤0.01
____________________________________________________
POD WIDTH (mm)
mean 4.63 4.41 4.72 4.35
std deviation 0.34 0.41 0.49 0.36
LSD/sig 0.18 P≤0.01 ns P≤0.01
____________________________________________________
32