| 摘要: |
| 对20株黄芪根瘤菌进行了C,N源利用、抗生素抗性、耐逆性和酶活性研究。结果表明，不同地区，甚至同一地区或同种寄主来源的菌株存在着多样性。以UPGMA聚类，在75％的相似性水平上，分成5个表观群，其与已知根瘤菌M.huakuii明显不同。 |
| 关键词: 黄芪，根瘤菌，表型性状，陕甘宁地区 |
| DOI： |
| 分类号:S154.381 |
| 基金项目:国家自然科学基金资助项目（39130010）;校青年教师专项科研基金资助项目 |
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| Phenotypic Feature Diversity of Rhizobia Isolated from Astragalus spp.in Shaanxi, Gansu and Ningxia |
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| Abstract: |
| Twenty strains isolated from Astragalus spp.were analyzed by a series of tests for C,N nutrient utilization,resistance to antibiotics,endurance to salt and alkali,and enzyme activities.The results showed obvious diversity of rhizobia existed in different places,and even in the same places or hosts.These strains,numerically classified with UPGMA,were divided into five phenotypic subgroups at 75% similarity level.Subgroups were clearly different from M.huakuii M.huakuii. |
| Key words: Astragalus ,rhizobia,phenotypic feature,Areas of Shaanxi,Gansu and Ningxia |
