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Abstract
Karyological studies have been conducted within five native cultivated populations of Salvia miltiorrhiza in China. The five populations can be divided into two kinds of somatic karyotypes. The karyotype formula of Zhongjiang population was K(2n) = 16 = 6m + 10 sm and another formula from four populations were K(2n) = 16 = 8m + 8sm. Three degrees of asymmetry calculated by Paszko’s method show that Neixiang population has the most symmetrical karyotype, and Taian population has the most asymmetrical karyotype. The karyotype displayed a low level of genetic variability among populations with average Nei’s genetic distance 0.0028. The five populations clustered into two distinct groups. The genetic relationships among populations are not related with their geographical distribution.
