Fig. 2

(a) TCS-derived network of genealogical relationships between the 75 ITS haplotypes. (b) TCS-derived network of genealogical relationships between the 22 haplotypes (rps16). The circle size of the two network diagrams is proportional to the sample size of each haplotype. Black filled dots indicate missing haplotypes. The haplotypes from the four regions are represented by four different colours. The dashes on the straight line represent the number of abrupt steps. (c) Sampling distribution map of 61 populations of Akebia trifoliata. Red, yellow, green and blue represent the different geographical locations of A (the eastern Tibetan Plateau), B (central northern China), C (central China) and D (eastern China), respectively