African Journal of Biotechnology

The AJOL site is currently undergoing a major upgrade, and there will temporarily be some restrictions to the available functionality.
-- Users will not be able to register or log in during this period.
-- Full text (PDF) downloads of Open Access journal articles will be available as always.
-- Full text (PDF) downloads of subscription based journal articles will NOT be available
We apologise for any inconvenience caused. Please check back soon, as we will revert to usual policy as soon as possible.

Phylogenetic relationships of eleven Kobresia accessions from the Tibetan plateau

P Yang, H Zheng, S Larson, Y Miao, T Hu


In the past, identification of the genus Kobresia was mostly dependent on morphological characteristics. This study used random amplified polymorphic DNA (RAPD), sequences of nrDNA ITS, cpDNA trnT-L-F spacer and cpDNA ndhF to assess the phylogenetic relationships among the accessions of Kobresia plants collected from the Tibetan plateau. In the dendrograms, Kobresia 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.

AJOL African Journals Online