UK Cereal Pathogen Virulence Survey

Monitoring changes in pathogen virulence

Managed by NIAB, and funded by AHDB Cereals & Oilseeds and Defra, the UK Cereal Pathogen Virulence Survey (UKCPVS) receives infected cereal leaf samples from agronomists, trials officers and researchers.

From these samples, pathogen isolates are selected and tested to check their virulence against wheat and barley varieties. The testing can detect new races of cereal pathogens capable of causing disease on previously resistant cereal varieties.

UKCPVS needs you!

How to submit a leaf sample for testing

The success of UKCPVS depends on infected cereal leaf samples received from the field, if you would like to get involved, full sampling instructions are available from the UKCPVS website.

Coronavirus (COVID-19) statement

As usual, UKCPVS plans to process all samples received. In addition to the standard sampling protocol, please ensure you adhere to government coronavirus guidelines when collecting and submitting samples:

Seedling-stage resistance concerns?

Regional reports of relatively high levels of early yellow rust on some varieties cited as having seedling stage resistance (typically, before early stem extension) reinforce the need to be vigilant. As part of its efforts to monitor changes in UK cereal pathogen populations, the UKCPVS is processing samples from these varieties. However, a broader set of samples will improve the robustness of these tests. If you observe unusual levels of rust (any growth stage), it is important to contact the UKCPVS.

Wanted: yellow and brown rust samples for UKCPVS (news item)

UKCPVS Stakeholder Event

Targeted at breeders, crop scientists and technical agronomists, the annual stakeholder event reports on recent seedling test results and adult plant nursery tests. It also features related technical papers based on pathogen virulence experience from across the globe.

Last event: 4 March 2020 in Cambridgeshire

Next events: 12 March 2021 and 2 March 2022 in Cambridgeshire


New pathotypes add further complexity to wheat rust population (4 March 2020) Early release of wheat rust resistance ratings (25 October 2019) ‘Calm’ 2018 provides time to reflect on cereal pathogen populations (9 January 2019)

UKCPVS report archive

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