| [studies on dna-dna hybridization and 16s rdna sequence of rhizobia isolated from shapotou desert soil in ningxia autonomous region of china]. | based on the previous studies on numerical taxonomy and multilocus enzymes electrophoresis patterns of the 12 rhizobial strains isolated from shapotou region, the contents of g + c mol%, dna-dna relatedness and 16srdna sequence of the representative strain were tested. the dna g + c content of the members of this group ranged from 56.4 to 62.2. the values of dna-dna hybridization within the group were above 70%, and relatendness between representative strains of this group and known rhizobial sp ... | 1999 | 12555411 |