Fig. 1

Dendrogram obtained by random amplified polymorphic DNA (RAPD)-PCR using primer XD9. The unweighted pair group method with arithmetic mean (UPGMA) was used for cluster analysis, and Dice was used as the similarity coefficient. Clusters were defined as band patterns with 100 % similarity and analysed separately with primers RAPD7, RAPD1, RAPD2, M13, RAPD8 and RAPD3