52. Volume 13- Number 2 - IP Australia

PLANT VARIETIES JOURNAL 2000 VOL 13 NO. 2
Medicago truncatula
Barrel Medic
‘Jester’
Application No: 98/201 Accepted: 27 Oct 1998.
Applicant: South Australian Minister for Primary
Industries of Adelaide, SA
Characteristics (Table 32, Figure 45) Plant: mid maturing,
semi erect. Leaf: brown to purple blotch in the centre of
each trifoliate leaflet. Blotch size and shape variable. Pod:
anti-clockwise coil, length 8.1mm (7 to 9.8mm), width
6.4mm (5.8 to 7.5mm), Seed: 9.7 per pod (8 to 12). Aphid
Resistance: resistance to both Spotted Alfalfa Aphid (SAA)
Theriophis trifolii fm maculata and Blue Green Aphid
(BGA) Acythosiphon kondoi.
Origin and Breeding Controlled Pollination: [(‘Jemalong’
X ‘SA 2927’) X ‘Jemalong’] X ‘Jemalong’. ‘Jester’ was
produced in a planned crossing program conducted by
Andrew Lake within SARDI aimed at producing a new
cultivar with the agronomic characteristics of ‘Jemalong’
whilst incorporating resistance to SAA and BGA. SA 2927
is a source of SAA and BGA resistance of complex origin.
It has amongst its parentage approximately 12% ‘Cyprus’,
12% ‘Jemalong’, 25% SA 1499 (the source of BGA
resistance) and 50% SA 10733. Both ‘Cyprus’ and ‘SA
10733’ are sources of resistance to SAA. Selection criteria:
Progeny have been selected from the double backcross that
retains the ‘Jemalong’ leaf marker and field performance
and that also carry the resistance genes for SAA and BGA
from ‘SA 2927’. The final selection was ‘Z914’.
Propagation: by seed. Breeder: Andrew Lake, SARDI,
Adelaide, SA.
Choice of Comparators ‘Jemalong’ was chosen because it
was used the recurrent parent. It has the same attributes as
‘Jester’ except for resistance to aphids. ‘Mogul’ A and
‘Paraggio’ were chosen as they are varieties of common
knowledge.
Comparative Trial Comparators: ‘Jemalong’, ‘Mogul’ A ,
‘Paraggio’. Location: Urrbrae, Adelaide, SA (Latitude
34.6s, Longitude 138.36e) Date: winter-spring 1998.
Conditions: trial conducted in field, plants propagated from
seed, fertiliser applied at 200kg/ha. Trial design: 4 reps x 20
plants per rep arranged in a randomised block design.
Measurements: Flowering times per plant, 20 pod samples
randomly collected per rep.
Prior Applications and Sales nil.
Description: Jeffrey R Hill, SARDI, Urrbrae, Adelaide, SA.
Table 32 Medicago varieties
‘Jester’ *‘Jemalong’ *‘Mogul’ A *‘Paraggio’
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LEAFLET
brown to purple blotch (upper surface)
present present absent absent
purple flecking (underside)
rare / rare / dense present
occasional occasional
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POD COIL DIRECTION
(Heyn, 1963) anti- anti- anti- clockwise
clockwise clockwise clockwise
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POD LENGTH (mm)
mean 8.1 8.1 5.7 7.1
std deviation 0.76 0.63 0.63 0.63
LSD/sig 0.64 ns P≤0.01 P≤0.01
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SEEDS PER POD
mean 9.8 9.6 6.0 7.4
std deviation 1.02 1.23 0.85 0.83
LSD/sig 1.04 ns P≤0.01 P≤0.01
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SPOTTED ALFALFA APHID (SAA)
(1 = resistant, 5 = very susceptible) – glasshouse test
resistant moderately moderately
susceptible susceptible
mean 1.0 3.3 2.9 n/a
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BLUEGREEN APHID RESISTANCE (BGA)
= resistant, 5 = very susceptible) – glasshouse test
resistant very resistant
susceptible
mean 1.2 5.0 1.2 n/a
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Medicago sativa
Lucerne, Alfalfa
‘Rapide’
Application No: 1997/294 Accepted: 12 Nov 1997.
Applicant: Seedco Australia Co-operative Limited,
Hilton, SA.
Characteristics (Table 33, Figure 44) Plant: perennial,
habit narrow, upright, height medium, very winter active
(dormancy rating 10). Stem: green, anthocyanin absent,
internodes medium, pubescent to sparsely pubescent. Leaf:
trifoliate, central leaflet on pronounced pedicel, leaflet
oblong-cuneate, sometimes denticulate at summit,
moderately glabrous lower surface, sparsely glabrous upper.
Inflorescence: oblong raceme to 30mm in length of 10 to 30
florets. Flower: blue to (mostly) purple, pea type, standard
approximately 3mm in length. Seed: typically 4 to 8 borne
in coiled pod of 3-5 coils to 5mm length, bright yellow to
khaki, 4 to 500/gm.
Origin and Breeding Recurrent Phenotypic Selection:
‘Rapide’ is a 139 plant synthetic variety derived from
recurrent phenotypic selection for resistance to spotted
alfalfa aphid. The 139 selections derived from two very
non-dormant breeding lines which were selected for
persistence, rate of regrowth and resistance to silverleaf
whitefly. One of the breeder’s lines was developed from the
cultivar ‘Hassawi’, while the other (designated WL 86-292)
had parentage that traces to Pioneer 5929 and WL 605.
Selection criteria: very high winter activity, increased seed
yield. Propagation: by seed. Breeder: staff of SeedCo,
Hilton, SA.
Choice of Comparators ‘CUF 101’ and ‘Hassawi’ were
chosen for the comparative trial, as ‘CUF 101’ is a
benchmark cultivar for highly winter active types such as
‘Rapide’, and ‘Hassawi’ is the major parent used to develop
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