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Random amplified polymorphic DNA (RAPD) markers are used in Quebec's certification program to verify the identity of raspberry cultivars. However, sequence characterized amplified region (SCAR) markers, less sensitive to modifications in reaction conditions, could be derived from RAPD markers. Our objective was to evaluate the potential of SCAR markers to replace the RAPD ones. Five RAPD markers obtained with primer OPG06 (length of 520, 700, 825, 1450, and 2000 bp) were cloned in pTZ/PC or pCRII vectors. Extremities of the cloned markers were sequenced by the nonradioactive silver sequence method using pUC/M13 forward and reverse primers. Sequence information was used to make SCAR primers, similar in length to standard PCR primers. Some SCAR primers were elongated RAPD primers, whereas others were from internal regions. Ability of primer pairs and combination of primer pairs to discriminate cultivars of our certification program was compared with their RAPD counterparts as well as with the technical feasibility of both methods.

Evaluation of SCAR Markers to Identify Raspberry Cultivars