| 李丽,强郁荣,来航线,乔正良,莫桂林.半干旱条件下21株耐盐放线菌的数值分类研究[J].干旱地区农业研究,2006,(3):207~210 |
| 半干旱条件下21株耐盐放线菌的数值分类研究 |
| A study on numerical taxonomy of 21syrains saline tolerance actinomicetes |
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| DOI：10.7606/j.issn.1000-7601.2006.03.44 |
| 中文关键词: 半干旱地区 耐盐放线菌 数值分类 聚类分析 |
| 英文关键词:saline tolerance actinomycetes numerical taxonomy cluster analysis |
| 基金项目:西北农林科技大学土壤学博士点基金 |
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| 中文摘要: |
| 对采自陕西、宁夏两地半干旱土壤的21株耐18%NaCl的放线菌进行了形态、生理生化特性、生长条件、抗生素敏感性等89项指标试验测定,并用DPS数据处理软件作聚类树状图,分析其数值分类情况。结果表明:所有试验菌株在0.66的水平上聚在一起。在0.42的水平上,它们可形成10个表观群,并分别归为链霉菌的八个类群和两个待定种。第Ⅰ群为金色类群,第Ⅱ群为烬灰类群,第Ⅲ群为粉红孢类群,第Ⅴ群为球孢类群,第Ⅵ群为灰褐类群,第Ⅷ群为白孢类群,第Ⅸ群为黄色类群,第Ⅹ群为绿色类群,第Ⅳ群和第Ⅶ群为待定种。另外,金色类群在陕西、宁夏两省盐渍土耐盐放线菌中最多,占总数的38.1%,为优势类群。 |
| 英文摘要: |
| 21 strains actinomycetes of tolerated 18% NaCl were compared with numerical classification using 89 characteristics.The results indicated that: all tested strains were clustered altogether at 0.66 similarity level.At 0.42 level,they became ten clusters,and belonged to 8 clusters of streptomyces and 2 unknown strains.ClusterⅠwas aureus,Cluster Ⅱ was cinerogriseus,Cluster Ⅲ was roseosporus,Cluster Ⅴ was globisporus,Cluster Ⅵ was griseofuscus,Cluster Ⅷ was albosporus,Cluster Ⅸ was flavus,ClusterⅩwas viridis,Cluster Ⅳ and Ⅶ was unknown.Besides,aureus was superiority cluster among saline tolerance actinomycetes in salt soils of Shaanxi and Ningxia provinces. |
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