Fig. 4From: Phylogenetic analysis and development of molecular markers for five medicinal Alpinia species based on complete plastome sequencesComparison of the variability of IGS regions among the plastomes of Alpinia galanga, A. hainanensis, A. nigra, A. officinarum, and A. oxyphylla. The X-axis indicates the IGS regions, and the Y-axis shows the range of K2p distances between different pairs of species. The diamond shows the average K2p distance of the IGS region, respectivelyBack to article page