Table 5. Estimates of genetic diversity and population differentiation (± SE in parentheses) for Ephedra species.
Species | HS | HT | GST | NST |
E. gerardiana | 0.009 (0.0087) | 0.843 (0.0541) | 0.990 (0.0102) | 0.985 (0.0162)ns |
E. saxatilis | 0.030 (0.0303) | 0.498 (0.1548) | 0.939 (0.0652) | 0.944 (0.0599)ns |
E. saxatilis var. mairei | 0.139 (0.0795) | 0.532 (0.1697) | 0.739 (0.1270) | 0.455 (0.1819)ns |
E. minuta | 0.077 (0.0663) | 0.076 (0.0616) | −0.005 (NC) | −0.000 (NC) |
E. likiangensis | 0.030 (0.0243) | 0.262 (0.1243) | 0.887 (0.1042) | 0.930 (0.0634)ns |
E. equisetina | 0.288 (0.1012) | 0.777 (0.0726) | 0.629 (0.1239) | 0.630 (0.1242)ns |
E. intermedia var. tibetica | NC | NC | NC | NC |
E. intermedia | 0.063 (0.0625) | 0.625 (0.0814) | 0.900 (0.0920) | 0.900 (0.0920)ns |
E. przewalskii | 0 | 0.833 (0.1443) | 1 (NC) | 1 (NC) |
E. distachya | 0 | 0.500 (0.2500) | 1 (NC) | 1 (NC) |
E. regeliana | 0.107 (0.1067) | 0.633 (0.1550) | 0.832 (0.1346) | 0.855 (0.1359)ns |
HS, average genetic diversity within populations; HT, total gene diversity; GST, interpopulation haplotype differentiation; NST, interpopulation haplotype differentiation taking into account sequence difference; ns, NST not significantly different from GST (P>0.05); NC, not computed due to small sample size or low variation among populations.