Genetic polymorphisms of 15 STR loci of Chinese Dongxiang and Salar ethnic minority living in Qinghai Province of China

Fifteen autosomal STRs loci were analyzed from two samples of 178 healthy unrelated autochthonous individuals of Chinese Dongxiang and Salar ethnic minority groups using a multiplex PCR system. Allele frequencies distribution and statistical parameters for all STR loci, D8S1179, D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, vWA, TPOX, D18S51, D5S818 and FGA, were determined by the AmpFISTR Identifiler Kit. The observed genotype frequencies and expected of genotype frequencies were evaluated by χ2-test and the Fisher exact tests. χ2-test showed that the agreement with Hardy–Weinberg equilibrium (p > 0.05) was for all studied STR loci of two populations. The data in the present study can be used greatly for routine forensic application in the region, and enrich Chinese ethnical genetic informational resources.