MATREF is a network of reference material managed by GEVES for testing varieties for resistance to pathogens and pests. It was created in 2002 for disease resistance tests performed for registration in the official catalogue (CTPS), for Plant Variety Rights (CPVO or INOV), or for external clients.
In 2020, MATREF contained 202 control varieties and differential hosts, as well as 48 pathogens and pests (in connection with ISF differential host sets).
On this page you will find the different strains, control varieties and differential hosts available at the GEVES pathology laboratory. By clicking on the species images below, you can consult the material available for each species.
Provide reliable and available reference material for disease resistance tests, including:
Controls: susceptible, intermediate, resistant cultivars
Differential hosts: for identification of races, e.g. the differential set for Bremia lactucae, in collaboration with the IBEB.
Pests and pathogen isolates
Harmonise reference material (controls, differential hosts, pathogens and pests) between official laboratories and seed companies in order to optimise the consistency of results for resistance assessment when GEVES and INRAE check the resistance claims of seed companies.
Share tasks and costs between network members for validation, maintenance, and distribution of seeds and pathogen strains.
MATREF provides a collection of reference material, managed by database:
Seed material
Validated as controls in official tests following confirmation of resistance/susceptibility behaviour
Validated as differential hosts using reference strains
Tested for germinative capacity by GEVES or seed companies from the network
Seed health testing: tests for main seed diseases in the European Union
Stored in an active bank at 4°C and backup bank at -18°C
Pathogen strains
Controls and differentials validated for aggressiveness and virulence
Maintained by the official laboratory (GEVES or INRAE) or an active bank and stored as a long term back up in 2 secure locations
Distribution of seeds and strains is managed by GEVES. This distribution is free for members of the MATREF network. Control and differential seeds and pathogen strains are also available for non-members; for non-members there is a fee and seed quantity is restricted. Please see the GEVES List of Services for more information.
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