Pathogenicity of Bipolaris sorokiniana isolates on wheat and barley genotypes for common root rot
Poster
Paper/Presentation Title | Pathogenicity of Bipolaris sorokiniana isolates on wheat and barley genotypes for common root rot |
---|---|
Presentation Type | Poster |
Authors | Dendi, Akhila, Percy, Cassandra, Martin, Anke and McDonald, Stephen |
Journal Citation | pp. 61-62 |
Number of Pages | 2 |
Year | 2024 |
Place of Publication | Australia |
Web Address (URL) of Conference Proceedings | https://www.asds-apps.com/_files/ugd/39a717_794c349835994ae39188153061f11139.pdf |
Conference/Event | 12th Australasian Soilborne Diseases Symposium (ASDS 2024) |
Event Details | 12th Australasian Soilborne Diseases Symposium (ASDS 2024) Parent Australasian Soilborne Diseases Symposium Delivery In person Event Date 26 to end of 30 Aug 2024 Event Location Kingscliff, Australia Event Venue Peppers Salt Resort & Spa Event Web Address (URL) |
Abstract | Common root rot, caused by the hemibiotrophic pathogen Bipolaris sorokiniana, presents a significant threat to wheat and barley production globally, leading to substantial yield losses and seed quality reductions. Despite efforts to breed high-yielding varieties, the availability of resistant cultivars remains limited for economically important diseases like common root rot. This research investigates the aggressiveness and pathogenicity of B. sorokiniana isolates collected from Queensland and New South Wales, focusing on their impact on wheat and barley genotypes. Seedling trials were conducted with nine B. sorokiniana isolates inoculated onto five genotypes each of wheat and barley using a layered pot method. The experiment, structured in a randomized complete block design with three replications, evaluated symptom severity, including discoloration on the sub-crown internode, primary, and secondary leaf sheaths, over a three-week period. Comparative analysis of the data aimed to identify the most pathogenic isolates, resistant genotypes, and variations in pathogenicity between wheat and barley, as well as among isolates sourced from different crop and grassy weed hosts. All isolates were pathogenic against wheat and barley among them, isolate A22#13, isolated from a wheat crown in NSW, exhibited high pathogenicity in both wheat and barley genotypes. Among the wheat genotypes, Timgalen had the highest susceptibility and Sunlin demonstrated partial resistance. In barley, genotype Beast was highly susceptible to infection and RGT Planet exhibited partial resistance to common root rot. Improving our understanding of B. sorokiniana pathogenicity and host resistance, will help to facilitate the development of common root rot-resistant wheat and barley varieties, thereby enhancing crop resilience and sustainability in cereal-growing regions worldwide. Such advancements are crucial for ensuring food security and mitigating the economic impact of common root rot on wheat and barley production systems. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
310705. Mycology | |
300406. Crop and pasture improvement (incl. selection and breeding) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions, but may be accessed online. Please see the link in the URL field. |
Byline Affiliations | University of Southern Queensland |
https://research.usq.edu.au/item/z977w/pathogenicity-of-bipolaris-sorokiniana-isolates-on-wheat-and-barley-genotypes-for-common-root-rot
26
total views0
total downloads15
views this month0
downloads this month