How Closely Related Turkish and North American Red Buds (Cercis-Fabaceae) are: Evidence From Internal Transcribed Spacer Region of Nuclear Ribosomal DNA Sequences

Fatih Coşkun


A phylogenetic systematic analysis using ITS nuclear ribosomal DNA sequences of the plant taxa of the genusCercis, a commonly cultivated ornamental distributed in North America, China, and Eurasia, was performed. Results of the analysis of the ITS marker yielded that Eurasian red bud is closely related with the North American red bud, an unexpected finding. On the other hand, Chinese red bud is found to be remotely related with the Eurasian red bud contrary to the expectation that they should be closely related. Furthermore, this study supports the hypothesis that the North American red buds are varieties of one species, Cercis canadensis.

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