Abstract
Amygdalus mira (Koehne) Ricker, originated in China, is a wild fruit tree distributed in Tibet with high economic and ecological value. To conserve its future breeding and germplasm resources, much information about genetic diversity of A. mira should be obtained. In this study, two DNA-based molecular markers, simple sequence repeat (SSR) and inter-simple sequence repeat (ISSR), were used for genetic diversity evaluations of 46 samples from four regions including Bomi (BM), Langkazi (LKZ), Mainling (ML) and Linzhi (LZ) in Tibet. Through combined analysis of SSR and ISSR, high levels of polymorphism (75.42 %) were observed, indicating that SSR and ISSR were efficient methods to detect genetic diversity of natural A. mira populations; all the samples were divided into two major clusters at the similarity coefficient of 0.54; the highest H and I values were observed in LZ population; most genetic variations occurred within populations; there is no significant relationship between genetic distance of populations and geographic distribution. For conversation of A. mira, ex situ conversation is a desired strategy needed to be established in the future.
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Abbreviations
- SSR:
-
Simple sequence repeat
- ISSR:
-
Inter simple sequence repeat
- RAPD:
-
Random amplified polymorphic DNA
- AFLP:
-
Amplified fragment length polymorphism
- CTAB:
-
Hexadecyl trimethyl ammonium bromide
- EDTA:
-
Ethylenediamine tetraacetic acid
- PCR:
-
Polymerase chain reaction
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Acknowledgments
This study was supported by the Fundamental Research Funds for the Central Universities (No. DL13EA08-02), the National Natural Science Foundation of China (31170568; 31201594).
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Xing, C., Tian, Y., Guan, F. et al. Evaluation of genetic diversity in Amygdalus mira (Koehne) Ricker using SSR and ISSR markers. Plant Syst Evol 301, 1055–1064 (2015). https://doi.org/10.1007/s00606-014-1136-3
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DOI: https://doi.org/10.1007/s00606-014-1136-3