Plant Variety Journal - IP Australia

Details of Application
Application Number 2006/032
Variety Name ‘Caza’
Genus Species Brassica juncea
Common Name Indian Mustard
Synonym Nil
Accepted Date 29 Apr 2006
Applicant University of Western Australia, Crawley, WA
Agent N/A
Qualified Person David Collins
Details of Comparative Trial
Location Wongamine, Avon Valley Western Australia.
Descriptor Rape Seed (Brassica napus) TG/36/6.
Period Jan 07 to Dec 07.
Conditions Plants were in red/brown sandy loam pH 5.3 in CaCl2 in open
plots. The plots were treated with glyphosate at 1 l/ha on 20
May 07 and cultivated on 25 May 07. The trial was sown on
the 15 Jun 07. Superphosphate + TE was applied at 100 kg/ha
at seeding and urea at 80 kg/ha was top dressed immediately
after seeding. Insecticide was used at the seedling stage for
red legged earth mite control. Grass selective herbicide was
used before flowering for weed control.
Trial Design Plants sown in randomised complete blocks 10m long x 1.2m
wide (6 rows) by 2 replicates.
Measurements Taken from 10 specimens per replicate selected at random
from approximately 400 plants. One sample taken per plant.
RHS Chart - edition
Origin and Breeding
Single plant selection: In 2001, 35 single plants selected from heterogenous breeding
line (DBL326) by Dr Margaret Campbell. 2002: seed from selected plants sown in
double rows at Shenton Park Field Station WA. Four of these lines were selected
based on erucic acid profile, grain yield, seed colour consistency and earlier maturity.
2003: selected lines sown in regional trials at Meckering and New Norcia WA. Two
of these lines were selected for further testing and bulked at Medina Research Station
WA in 1 ha plots under irrigation. Breeders seed was produced at Shenton Park in
0.04 ha plots in parallel to bulk plots. Off types were removed and erucic acid levels
checked. 2004: two lines sown in commercial size 50 ha plots at four regional
locations in WA. One line (selection 21) was progressed based on selection criteria.
Breeders seed produced at Shenton Park where off types were removed and erucic
acid levels checked. 2005: Final selection (Selection 21) tested in regional trials by
Western Australian Agricultural Dept and herbicide tolerance trials conducted by
University of WA. Breeder: by Dr Margaret Campbell, University of Western
Australia, Faculty of Agricultural Science, Crawley, WA.
Page 228 of 550
Plant Varieties Journal Vol. 21 No.3