Genetic diversity and symbiotic efficiency of population of rhizobia of Phaseolus vulgaris L. in Brazil

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• 作者：Adriana Giongo ; Luciane M. P. Passaglia ; Jo?o R. J. Freire and Enilson L. S. de Sá
• 关键词：Rhizobium ; Diversity ; Symbiotic efficiency ; Trap ; host ; Rep ; PCR
• 刊名：Biology and Fertility of Soils
• 出版年：2007
• 出版时间：June, 2007
• 年：2007
• 卷：43
• 期：5
• 页码：593-598
• 全文大小：139 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Life Sciences
  Agriculture
  Soil Science and Conservation
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0789

文摘

The genetic diversity and symbiotic efficiency among indigenous rhizobia isolates obtained from native field with or without organic fertilization and superficial mineral fertilization were investigated. Eighty-six indigenous rhizobia were isolated from these fields using four common bean varieties as trap-host. The common bean varieties Mexico 309 and Rio Tibagi selected the most efficient rhizobia strains because they showed the best yields and N contents results. The genetic characterization of 36 rhizobia isolates was evaluated by using electrophoretic profiles of amplification products using primers ERIC1-R and ERIC-2. Our results demonstrated that besides the large diversity in the indigenous rhizobial community, the genotype of the trap-host probably influences the selection of the most efficient strains.