Division PrincipleF1

The testing procedure is intended for detection of latent infections in potato tubers. A positive result from at least two screening tests, based on different biological principles, must be complemented by the isolation of the pathogen; followed by, in case of isolation of typical colonies, confirmation of a pure culture as C. m. subsp. sepedonicus . A positive result from only one of the screening tests is not sufficient to consider the sample suspect.

Screening tests and isolation tests must permit a detection threshold of 10 ³ to 10 ⁴ cells/ml resuspended pellet, included as positive controls in each series of tests.