Genetic diversity of Populus euphratica populations in northwestern China determined by RAPD DNA analysis |
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| Authors: | Saito Y Shiraishi S Tanimoto T Yin L Watanabe S Ide Y |
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| Institution: | (1) Graduate School of Agricultural and Life Sciences, Arboricultural Research Institute, University of Tokyo 475, Kano, 415-0304 Minami-Izu-machi, Japan;(2) Department of Forest Botany, Kyushu University, Higashi-ku, Fukuoka, Japan;(3) Department of Forest Science, Utsunomiya University, Utsunomiya-shi, Tochigi, Japan;(4) Xinjiang Institute of Ecology and Geography, Chinese Academy of Science, Urmqui, Xinjiang, China;(5) Department of Forest Science, University of Tokyo, Japan;(6) Department of Ecosystem Studies, University of Tokyo, Japan |
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| Abstract: | Five Populus euphratica Oliver populations in northwestern China were analyzed using RAPD DNA markers to determine genetic diversity among and within populations. One hundred-and-five polymorphic bands were observed, ranging in size from 250 bp to 1700 bp, using 10 primers. Only one population on the north side of the Tianshern Range had a unique band common to all individuals that was not found in individuals from populations in the Tarim River valley. Intra-population genetic diversity was high in two populations along the Tarim River and low in the other three populations. There was no significant correlation between genetic distances and geographic distances. The result of correspondence analysis shows that the individuals from the three populations with low genetic diversity are isolated from each other. The result of cluster analysis based on genetic distance shows that the population in the Tianshern Range is genetically distant from the other populations. These results suggest that the Tianshern Range population was genetically isolated from the other populations. |
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| Keywords: | Genetic distance Genetic diversity Natural population Populus euphratica RAPD |
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