Plant Variety Journal - IP Australia

Details of Application
Application Number 2006/312
Variety Name ‘PacL 501’
Genus Species Medicago sativa
Common Name Lucerne
Synonym Nil
Accepted Date 18 Jun 2007
Applicant The University of Queensland, St. Lucia, QLD and Grains
Research and Development Corporation, Barton, ACT
Agent N/A
Qualified Person John Irwin
Details of Comparative Trial
Location Gatton, QLD.
Descriptor Lucerne (Medicago sativa) TG/6/5.
Period 10 Sep 2006 – 30 May 2007.
Conditions The spaced plants were raised as seedlings and transplanted
into raised beds of alluvial black soil, with overhead
irrigation. Pre-emergent herbicide was applied at the
recommended rate prior to transplanting and seeding rows.
Fungicide and herbicide treatments were applied as required
during the trial.
Trial Design Spaced plants in a randomised complete block design with 4
replicates; each replicate comprising a row with 33 plants at
0.5m spacing between plants, and 0.5m between rows. The
seeded rows were in a 4 replicate design with 3m of row per
replicate, establishing 200 seeds/m and 0.75m row spacings.
Measurements 60 spaced plants per cultivar were measured for plant height 2
weeks after the spring and autumn equinoxes, after being cut
2 weeks before the equinoxes; plant height was also assessed
at full flowering. Flower colour was determined on 60 spaced
plants, using the terminology of Barnes (1972).
RHS Chart - edition N/A
Origin and Breeding
In 2002, 60 clones of ‘Wisfal’ (Crop Science 33:217-218) were used as pollen parents
in a polycross performed by hand, without vacuum emasculation. The pollen
recipients were selected from the lucerne cultivars ‘Hunter River’, ‘Aquarius’, ‘UQL-
1’, ‘Sequel HR’, ‘Hallmark’, ‘Rippa’ and ‘Sequel’ based on disease resistance and
persistence after 3 years in the field. The resultant seed was bulked to give syn 1. The
syn 1 seed was increased through another two generations in the field at Gatton
without intentional selection pressure being applied. Seed from these generations is
referred to as gen 1 and gen 2 for the DUS tests. Breeders: J.M. Mackie, D.J. Armour
and J.A.G. Irwin, University of Queensland, Brisbane, QLD.
Page 272 of 550
Plant Varieties Journal Vol. 21 No.3