Phylogenetic Relationships of Kobresia Accessions from the Tibetan Plateau
In the past, identification of genus Kobresia is mostly dependent on morphological characteristics. This study used RAPD, sequences of nrDNA ITS, cpDNA trnT -L -F spacer and cpDNA ndhF to evaluate the phylogenetic relationships among the accessions of Kobresia plants collected from the Tibetan plateau. In the dendrograms, K. macrentha (L) species formed a separate clade suggesting a remote relationship with other accessions. These trees showed that species found in similar habitats or having similar adaptations tended to cluster together. Thus, the genetic variation and adaptation seen in these Kobresia accessions may be due to their remote geographic and high altitudinal position in the Tibetan plateau. This study highlights the importance of molecular analysis in understanding the genetic diversity and structure of Kobresia accessions, and contributes to the knowledge of conservation of genetic resources.
Peizhi Yang Hongmei Zheng Steven Larson Yanjun Miao Tianming Hu
Department of Grassland Science,College of Animal Science and Technology,Northwest Agriculture an Department of Grassland Science, College of Animal Science and Technology,Northwest Agriculture Forage & Range Research Lab,Utah State University,USDA -ARS,Logan,Utah USA 84322-6300
国际会议
陕西杨凌
英文
79-86
2010-10-09（万方平台首次上网日期，不代表论文的发表时间）