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Fig. 2. | BMC Biology

Fig. 2.

From: Genomic analysis of field pennycress (Thlaspi arvense) provides insights into mechanisms of adaptation to high elevation

Fig. 2.

Population genetic structure and demographic history of field pennycress. a Sampling locations. For four site names and two groups, refer to Table 2. b Population structure plots with the number of ancestral clusters (K) = 2. c Principal component analysis (PCA) plot of all samples in four populations. d Maximum likelihood (ML) tree of all samples based on high-quality single nucleotide polymorphisms (SNPs). e Effective population size inferred based on SNPs for four populations. f Linkage disequilibrium (LD) patterns for the four pennycress populations. X-axis: physical distances between two SNPs marked in kb; Y-axis: R2 used to measure linkage disequilibrium

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