Using a systems approach to investigate the efficacy of a disease rating system for Sclerotinia stem rot in canola
MetadataShow full item record
© Australian Society of Agronomy Inc. 2022. Individual authors retain copyright in abstracts published in the Abstracts book and papers published online for the 20th Conference.
Sclerotinia stem rot (SSR), caused by the necrotrophic fungus Sclerotinia sclerotiorum, is a major, but unpredictable disease of canola in Australia. However, there is no disease rating system for current canola varieties. Over the last four years the most common varieties of canola grown in Western Australia were assessed in the field using natural disease occurrence, and in glasshouse experiments using manual inoculations, to determine their susceptibility to SSR. The results highlighted the complexity and unpredictable nature of SSR with infection levels and varietal response varying depending on seasonal conditions and time of infection, despite limited levels of genetic resistance to SSR in current varieties. It is suggested that a disease rating system should not be based purely on inseason plant infection, but should also include potential for future infections through the contribution of sclerotia from infected plants to the system.
Showing items related by title, author, creator and subject.
Bennett, Sarita ; Derbyshire, Mark; Michael, Pippa; Denton-Giles, Matthew; Lui, king yin; Thomson, linda (2019)Key messages • Preconditioning temperatures between 35 and 50°C for 30 to 60 days increases sclerotia germination to 80%, compared to with no preconditioning • Sclerotinia stem rot infections were low in field trials ...
Impact of fungicide application and host genotype on susceptibility of brassica napus to sclerotinia stem rot across the south-western australian grain belt: A genotype × environment × management studyBennett, Sarita ; Lamichhane, Ashmita; Thomson, Linda; Lui, King Yin; Michael, Pippa (2021)Sclerotinia stem rot (SSR), caused by the necrotroph Sclerotinia sclerotiorum Lib. (de Bary), is a major disease of canola in Australia, greatly reducing yields in high infection years. This study investigated genotype ...
Narrow windrow burning canola (Brassica napus L.) residue for Sclerotinia sclerotiorum (Lib.) de Bary sclerotia destructionBrooks, K.; Bennett, Sarita; Hodgson, L.; Ashworth, Michael (2018)© 2018 Society of Chemical Industry BACKGROUND: Since the introduction of herbicide-tolerant varieties of canola (Brassica napus L.) in 1993, global plantings have increased resulting in an increased incidence of Sclerotinia ...