Characterization of Moroccan Isolates of Verticillium dahliaeKleb Using RAPD Markers

Isolates of Verticillium dahliae were sampled from di}er! ent olive tree orchards in Morocco[ These olive trees were located in di}erent commercial culture locations in southern\ central and northern Morocco[ The isolates were characterized using genetic markers obtained after their DNA PCR ampli_cation with random ampli_ed polymorphic DNA "RAPD# primers[ Among the 39 pri! mers tested\ 09 generated a total of 55 polymorphic frag! ments[ Among the 27 isolates of V[ dahliae tested\ RAPD markers were successful in the characterization of groups based on their geographic origin[ With the exception of one speci_c isolate\ no correlation could be established among the isolates\ based on the morphological appear! ance of the colony in culture[