Fig 1.
Study regions of Tugarinovia mongolica.
Red dots represent T. mongolica, and black dots represent T. mongolica var. ovatifolia.
Table 1.
Sample and genetic variation information for 16 populations of Tugarinovia mongolica in northwest China.
Fig 2.
Geographic distribution of 17 cpDNA haplotypes detected in 16 populations of Tugarinovia mongolica from Inner Mongolia.
Pie charts show the frequency of haplotype in each population. Red dots represent the population of the northern group (NG), and black dots represent the population of the southern group (SG). The blue line outlines represent the location of Helan Mountain. The nomenclature of NG and SG populations (See Table 1) is: HLT, Hailiutu; DLS, Delingshan; CJSM, Chuanjinsumu; BYH, Bayinhua; BYHT, Bayinhatai; SQ, Shuiquan; SZ, Saizhen; BYT, Bayintu; WLJ, Wuliji; YG, Yingen; LSM, Lashenmiao; DZT, Dizhentai; BRBL, Barunbieli; QPJ, Qipanjing; QLG, Qianligou; HBW, Haibowan.
Fig 3.
Statistical parsimony network of 17 haplotypes of Tugarinovia mongolica based on two cpDNA regions.
The size of each circle is proportional to the frequency of the haplotype. The haplotypes H1-H11 are found exclusively in the northern group (NG), while haplotypes H12-H17 are found exclusively in the southern group (SG).
Table 2.
Estimation of gene diversity (HS, HT) and gene differentiation (GST, NST) values of the total populations, the northern group (NG) and southern group (SG).
Table 3.
Results of analysis of molecular variance of cpDNA sequence data of Tugarinovia mongolica.
Fig 4.
The divergence time (Mya) of 17 cpDNA haplotypes of the northern group (NG) and southern group (SG) of Tugarinovia mongolica based on BEAST analysis.