July 1, 2010
June 30, 2013
SARDI: Dr Phil Davies, Dr Parminder Sidhu and Dr Hugh Wallwork.
University of Adelaide: Dr Jason Eglinton and Dr Stewart Coventry.
ACPFG: Prof Mark Tester and Dr Yuri Shavrukov.
SARDI: Dr Klaus Oldach and Dr Katherine Linsell.
The lack of availability of new resistance sources of scald, leaf rust and net form net blotch, and boron, salt and moisture stress tolerance is impacting on profitable barley production, particularly in more marginal cropping country in South Australia.
Building on SAGIT project S0107R, Hordeum bulbosum parents were tested for resistance to scald, net form net blotch and leaf rust.
During this project, the bulbosum parents were tested for resistance to scald, net form net blotch and leaf rust. Very good sources of resistance were found.
Tests for crown rot, root lesion nematode and frost tolerance could not be conducted because of difficulties in producing backcross lines from the bulbosum accessions.
New scald, net form net blotch and leaf rust resistance genes were crossed back into Commander barley plants.
Specifically, this project has delivered to the barley breeding program third generation backcross lines of bulbosum leaf rust resistance in Commander plants and germplasm with potential boron tolerance. Germplasm from eight new bulbosum accessions was crossed with Commander to provide a potential source of many new traits for barley breeders.
Disease and trait testing
Specific test results include:
The next step is to further develop this genetic material to allow rapid backcrossing of these specific traits. However, this will require a new project using the new ‘genotyping by sequencing’ technology to quickly minimise the quantity of bulbosum DNA in the hybrids.
Value for growers
Key findings in this project have been:
Related SAGIT-funded project: S0107R