Mapping of Septoria isolates: improving disease resistance, such as Septoria resistance |
Septoria blotch is a major foliar disease affecting oat production in Western Australia (WA), with average yield losses of approximately 15%, and up to 50% in extreme cases, causing significant economic impact. Currently, no WA oat varieties possess resistance to this disease. This project aimed to address this gap by developing genetic resources and breeding tools to accelerate the creation of Septoria-resistant oat cultivars. Key achievements include: 1. Development of 25 new mutant breeding lines derived from Bannister (the leading WA oat variety, grown in >60% of WA oat areas), showing improved resistance. These lines have been transferred to InterGrain for field evaluation and breeding. 2. Identification of six globally sourced oat lines with stable, broad-spectrum resistance—PI 194201, GLIDER, CONDOR, MAGNIF 29, UPF 775434, and ARGENTINA—selected from over 2,000 accessions. These have also been transferred to InterGrain. 3. Discovery of molecular markers and QTLs on chromosomes 1A, 1D, 2D, 4D, 6C, and 7D associated with resistance, enabling marker-assisted selection. 4. Confirmation of no distinct pathotypes among 42 Parastagonospora avenae isolates collected across WA and tested at the seedling stage. Although isolates varied in aggressiveness, no differential virulence was observed. This finding simplifies breeding strategies by removing the need to develop resistance against specific pathotypes, allowing breeders to focus on broad-spectrum resistance. Further testing of isolates at the adult plant stage is currently underway as part of a new project. These outputs will accelerate the development of resistant oat varieties, reduce fungicide reliance, and safeguard the sustainability of WA’s oat industry. |
Western Crop Genetic Alliance (DPIRD, InterGrain and Murdoch University) |
Completed |
Extension of pan genome project: provide enabling technologies to oat breeders and researchers to enhance capacity for oat genetic improvement |
Oat pan genome will provide genomic tools to revolutionise oat breeding. The project has decoded the genetic codes of Australian key oat varieties Bannister, Bilby and Williams together with resequencing of 80 other Australian oat varieties. The project identified a key genome structural variation in the WA oat variety Bannister for high yield and a diagnostic tool was developed for breeding. The genomic resources have provided to InterGrain, Curtin University, University of Adelaide, University of Sydney and CSIRO for breeding and research to improve oat productivity, including disease resistance, yield and quality. The research findings can be found here. |
Western Crop Genetic Alliance (DPIRD, InterGrain and Murdoch University) |
Completed |
Is deep sowing the next step change opportunity for oats with long mesocotyl? |
This project aims to unlock the potential of deep sowing in oats, leveraging the crop’s unique physiology, specifically, the presence of a mesocotyl, to enable earlier sowing into deeper stored soil moisture. It will generate the knowledge oat growers need to confidently adopt deep sowing, while equipping breeders with tools to select for genetic traits that support this practice By 2026, oats are the preferred cereal option for deep and early sowing across WA. This will drive an approximate 20% increase in area sown to oats, resulting in higher yields and fewer physical grain quality downgrades. This project will provide farmers and agronomists with the knowledge needed to implement this new farming system approach, while also equipping breeders with an understanding genetic variation and a selection toolbox for the trait to support future improvements. |
Delivered by InterGrain |
Underway |