44. Volume 15- Number 2 - IP Australia

DESCRIPTIONS
PLANT VARIETIES JOURNAL 2002 VOL 15 NO. 2
‘Torrens’
Application No: 2001/123 Accepted: 10 May 2001.
Applicant: Luminis Pty Ltd, Adelaide University,
Adelaide, SA and The Grains Research and
Development Corporation, Barton, ACT.
Characteristics (Table 20, Figure 52) Plant: growth habit
erect, length medium. Lower leaves: hairiness of leaf
sheaths absent. Flag Leaf: anthocyanin colouration of
auricles present, intensity of anthocyanin colouration of
auricles medium, glaucosity of sheath weak. Time of ear
emergence: medium to early. Ear: attitude semi-recurved,
length medium, number of rows two, density medium,
shape tapering, glaucosity weak. Awns: length compared to
ear medium, anthocyanin colouration of tips present,
intensity of anthocyanin colouration of tips medium,
spiculation of margins absent. Rachis: length of first
segment short-medium, curvature of first segment medium.
Sterile spikelet: attitude divergent. Median spikelet: length
of glume and its awn relative to grain shorter. Grain: rachilla
hair type short, husk absent, spiculation of inner lateral
nerves of dorsal side of lemma absent, hairiness of ventral
furrow absent. Kernel: colour of aleurone layer weakly
coloured. Seasonal type: spring.
Origin and Breeding Controlled pollination: seed parent
‘Galleon’ x pollen parent ‘CIMMYT 42002’. The seed
parent is characterised by weak intensity of anthocyanin
colouration of the auricles, medium-early time to ear
emergence, weak intensity of anthocyanin colouration of
the tips of the awns, short awns compared to the ears length,
medium curvature of the first segment of the rachis, an
absence of hair in the ventral furrow and the presence of
grain husk. The pollen parent is characterised by strong
anthocyanin colouration of the auricles, medium-late time
to ear emergence, strong intensity of anthocyanin
colouration of the awns, short awns compared to the ear
length, weak curvature of the first rachis segment, an
absence of hair in the ventral furrow and an absence of grain
husk. Hybridisation took place at the Waite Campus,
Adelaide University in 1989. From this cross, F 3 derived
selection number 78 was tested in Adelaide University
Stage 3, SARDI Stage 3 and 4 trials between 1995 and 2001
and selected on the basis of agronomic, disease resistance
and grain quality data. Selection criteria: high grain yield
potential, desirable agronomic characteristics and resistance
to cereal cyst nematode for cultivation in South Australia.
Propagation: approximately 100 cereal cyst nematode
resistant reselections were made in 1998 and were
multiplied in a summer nursery at Langhorne Creek, South
Australia. From these, 80 of the highest yielding
populations were subsequently multiplied at Turretfield
Research Station, South Australia during 2000. The most
phenotypically similar selections were bulked to produce
approximately 2.5 tonnes of pure seed and used to sow
commercial scale seed production at two locations
(Charlick Experimental Research Station, South Australia
and Dimboola, Victoria) in 2001. Breeder: Dr David
Sparrow, Ms Amanda Box and Professor Andrew Barr, SA
Barley Improvement Program, Department of Plant
Science, Waite Campus, Adelaide University, SA.
Choice of Comparators Grouping characteristics used in
identifying the most similar varieties were– Lower leaves:
hairiness of leaf sheaths absent, Flag leaf: anthocyanin
colouration of auricles present, Awns: anthocyanin
colouration of tips present, Ear: number of rows two,
Seasonal type: spring. On this basis, the following
comparator genotypes were included in the trial:
‘CIMMYT 42002’ (pollen parent), ‘Galleon’ (seed parent),
‘Schooner’ (husked), ‘Morrell’ (hulless) and ‘Namoi’
(hulless).
Comparative Trial Location: sown at Charlick
Experimental Research Station, Strathalbyn, SA (Latitude
35º29′ South, Longitude 135º89′ East). Conditions: sown
into a calcareous loam over limestone marl sub-soil 15 Jul,
2001. Trial design: genotypes arranged in a 3-replicate
randomised complete block design. Measurements:
qualitative traits (e.g. time of ear emergence) were
measured on a whole plot basis, whereas quantitative traits
(ear length excluding awns) were measured on 15 randomly
sampled plants from a single replicate.
Prior Applications and Sales Nil.
Description: Andrew Barr and Amanda Box, SA Barley Improvement
Program, Department of Plant Science, Waite Campus, Adelaide
University, Adelaide, SA.
Table 20 Hordeum varieties
‘Torrens’ *‘Galleon’ *‘Schooner’ *‘CIMMYT *‘Morrell’ *‘Namoi’
42002’
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PLANT: GROWTH HABIT
erect prostrate erect erect erect erect
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FLAG LEAF: INTENSITY OF ANTHOCYANIN COLOURATION OF AURICLES
medium weak weak strong strong medium
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TIME OF EAR EMERGENCE
medium-early medium-early medium medium-late medium-late medium
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PLANT LENGTH (stem, ear and awns) (cm) – to tip of awns
mean 69 71 76 85 84 78
std deviation 1.00 3.61 1.00 5.57 2.08 0.00
LSD/sig 2.41 ns P≤0.01 P≤0.01 P≤0.01 P≤0.01
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