Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Phylogenetic analysis based on nodD gene region sequences of α-rhizobia isolates from Venezuela. The tree based on a 685-bp DNA fragment of the nodD gene obtained from Venezuelan Bradyrhizobium and Rhizobium isolates. The numbers at the branch nodes indicate bootstrap values (%) based on a neighbor-joining analysis of 1,000 re-sampled datasets. The scale bar indicates substitutions per site. (B.: Bradyrhizobium).
