title: Genetic hydridization of root-nodule bacteria (Rhizobium).
mesh_terms: D003433:Crosses, Genetic; D007887:Fabaceae / Q000378:metabolism; D005787:Gene Frequency; D005796:Genes; D008040:Genetic Linkage; D006824:Hybridization, Genetic; D009586:Nitrogen Fixation; D010944:Plants / Q000378:metabolism; D010946:Plants, Medicinal; D012231:Rhizobium / Q000235:genetics*; D013559:Symbiosis; D014161:Transduction, Genetic; D014169:Transformation, Bacterial