In addition to the breakthrough with Cadoux, and the release last year of Corrigin which has resistance to septoria tritici blotch. Western Australian wheat breeders will be releasing three disease resistant cultivars this year. All three are white-chaffed, awned, semi-dwarf varieties and have yet to be named, said breeder Robin Wilson. They are:
78Z:895 — a soft-grained ASW wheat, generally similar to Kulin. Seen as a more disease resistant replacement for Spear in the south-western and south-eastern higher rainfall areas. In 1992 trials in Esperance this cultivar gave yields and disease levels without fungicide similar to Spear with fungicide.
It has moderate resistance to both blotch diseases —Septoria nodorum and S.tritici, and to yellow spot and leaf rust and may be resistant to stripe rust depending on which race strikes. It is rated superior to Spear for all diseases of importance to WA except for black point. However black point is considered less of a problem in the south.
Septoria nodorum is most common in Western Australia while Septoria tritici is common to southern Australia but most important in south-eastern Australia.
- 81 Y:971 — a high-yielding, hard wheat variety with general application for later sowing in the medium and low rainfall areas of the west and south-east. It out-yields all alternative hard varieties and is rated equal to or better than the highest yielding ASW varieties.
- 80:Y1117 —a high-yielding, hard-grained variety with potential for ASW that is very resistant to stripe rust and moderately resistant to leaf rust with general application in the medium to low rainfall areas of the west and south-east, particularly for early sowing. However it is susceptible to both blotch diseases and to yellow spot. Considered a good insurance policy against the future introduction of stripe rust into Western Australia.
CONTACT: Mr Robin Wilson 09 368 3522