FIG. 4.

Product-moment/UPGMA cluster analysis of linearly combined BOX, ERIC, and REP PCR genomic fingerprints of nodule isolates of endemic woody legumes of the Canary Islands and reference strains (see Table 1). The only significant cluster is denoted by I. See the text for explanations. On the scale, r values are expressed as percentages. R. etli, Rhizobium etli; R. trop., Rhizobium tropici; A. tum., Agrobacterium tumefaciens; P. fluor., Pseudomonas fluorescens; B. jap., Bradyrhizobium japonicum.