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Genetic structure of endangered Rhodiola sachalinensis

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Abstract

Rh. sachalinensis is a perennial,medicinal herb. The species is rare with apatchy distribution. Due to heavy disturbanceby human activities, it is now endangered.Allozyme analysis was employed to estimate itsgenetic diversity. Nineteen loci encoding 12enzyme systems were used. Rh.sachalinensis has a lower genetic variationwithin patches and higher differentiationbetween patches than other endangered, endemicspecies with limited distributions. The geneticdifferentiation between patches withingeographic regions is lower than that amonggeographic regions. Genetic drift is likely adominant factor contributing to the observedpattern of genetic structure. Because a higherdegree of genetic differentiation existsbetween patches in Rh. sachalinensis,more populations should be protected insitu, and samples from more populations shouldbe collected for ex situ conservation.

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Authors and Affiliations

  1. Open Research Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin, 150040, China

    Ting-Fen Yan, Yuan-Gang Zu, Xiu-Feng Yan & Fu-Jun Zhou

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  1. Ting-Fen Yan
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  2. Yuan-Gang Zu
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  3. Xiu-Feng Yan
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  4. Fu-Jun Zhou
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Correspondence to Yuan-Gang Zu.

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Yan, TF., Zu, YG., Yan, XF. et al. Genetic structure of endangered Rhodiola sachalinensis . Conservation Genetics 4, 213–218 (2003). https://doi.org/10.1023/A:1023342723814

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