Fig. 1From: Towards the plastome evolution and phylogeny of Cycas L. (Cycadaceae): molecular-morphology discordance and gene tree space analysisSliding-window analysis of the whole chloroplast genomes for 47 Cycas. The window length is set as 600Â bp with the step size as 100Â bp. The X-axis denotes the midpoint position of a window. Y-axis shows nucleotide diversity (Pi) of each window. The orange line denotes a Pi threshold of 0.006 to screen high variation regionsBack to article page