FIG. 1.

Dice/UPGMA cluster analysis of combined CfoI, DdeI, MboI, and MspI restriction patterns of amplified 16S rDNA of nodule isolates of endemic woody legumes of the Canary Islands and reference strains (see Table 1). The individual RFLPs are shown as bands defined on the actual restriction fragments. The sizes of the restriction fragments for each type of pattern are presented in Table 2. Clusters A, B, and C contain all the Canarian isolates and the two reference Bradyrhizobium strains. R. etli, Rhizobium etli; R. tropici, Rhizobium tropici; A. tumefaciens, Agrobacterium tumefaciens; P. fluorescens, Pseudomonas fluorescens.