The invention discloses a method for detecting the
drug resistance of
Corynespora cassiicoa to SDHI fungicides by using MAS-PCR technology and a used primer composition.
Specific primers D95E-R, H105R-R, and G109V-R in the primer composition are reverse primers designed targeted to
mutation sites D95E, H105R and G109V of
succinate dehydrogenase D
subunit of
Corynespora cassiicoa resistant to boscalid correspondingly, corresponding sequences are at the
mutation sites, and a 3'end base is specially designed, so that the specificity of the primers is improved. The method for detecting or auxiliary detecting the
drug resistance of
Corynespora cassiicoa to the SDHI fungicides can simultaneously detect the three
mutation types of D95E, H105R and G109V in a PCR
reaction tube, compared with otherdetection methods that can only detect a
single mutation, the method has the advantages of time-saving, labor-saving, fast and high-
throughput, and a large number of samples can be accurately detected.