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Simplified dendrogram showing relationships among 118 fluorescent pseudomonad strains pathogenic for C. avellana constructed by using the results of repetitive PCR performed with ERIC, BOX, and REP primer sets. Cluster analysis was performed by UPGMA with a matrix calculated with Dice's coefficients. VT, province of Viterbo in Latium; Rm, Rome; P.s., P. syringae. Subgroups A1 and A2 contained strains belonging to P. avellanae.
