Abstract
Fusarium Head Blight (FHB), caused mainly by Fusarium graminearum, is one of the most notorious diseases in North part of Iran. Due to lack of sufficient information regarding genetic diversity of FHB, the correlation between genetic diversity and geographic distribution of 52 isolates that collected from infected wheat kernels from four main grown region of North part of Iran were analyzed with 10 simple Sequence Repeat (SSR) primers and 15 Random Amplified Polymorphic DNA (RAPD) primers. The un-weighed pair group method using arithmetic means (UPGMA) was used and a dendrogram was constructed based on Jaccard's similarity coefficient. Principal Component Analysis (PCA) of SSR and RAPD markers revealed that the first two factors accounted for 51 and 41% of the total variance, respectively. SSR and RAPD data classified isolates into four and seven groups, respectively. SSR analysis showed that there was a correlation between genetic clusters of isolates and geographical origin in F. graminearum. However, results of cluster analysis using RAPD data didn't show any relation with geographical distribution but the results of this analysis confirmed a genetic variation among all isolates.
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