Written by cpm
Download PDF Every season has a new chapter to the yellow rust story. CPM finds out the lastest twists in the tale as the UKCVPS reported the results of its surveillance last season. UKCPVS received higher than expected reports of disease in some varieties. By Lucy de la Pasture Yellow rust has become unpredictable at best since the incursion of the Warrior race in 2011. The genetic diversity now present in the population means every season there’s a possibility of an unexpected unpicking of resistance in varieties rated highly against the disease. Each year in March the UKCVPS reports the results of the survey’s monitoring from the previous cropping year. It throws light on the resistance genes being attacked and those that are standing firm and highlights new pathotypes which have novel combinations of virulence and avirulence for a differential set of wheat varieties. Adult plant trials and variety seedling tests are then carried out using the yellow rust isolates with virulence profiles of particular interest. This helps identify the risks associated with the change in the yellow rust population, explains Amelia Hubbard, reporting the results of the 2020 UKCPVS – jointly funded by AHDB and Defra’s Animal and Plant…
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