Chapter Ⅰ Genetic divergence and gene flow among Mesorhizobium strains nodulating the shrub legume Caragana growing along the semi-fixed desert belt in north China Introduction Materials and methods Results Discussion Conclusion
Chapter Ⅱ Biogeographic distribution of rhizobia associated with the medicinal legumes Astragalus spp. and Hedysarum polybotrys in agricultural soils Introduction Materials and methods Results Discussion
Chapter Ⅲ Evolutionarily conserved nodE, nodO, T1 SS, and hydrogenase system in rhizobia of Astragalus membranaceus and Caragana intermedia Introduction Materials and Methods Results Discussion Conclusion
Chapter Ⅳ Genetic divergence among Bradyrhizobium strains nodulating wild and cultivated Kummerowia spp. in China Introduction Materials and Methods Results Discussion Conclusion References
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