Phylogenetic analyses of bamboo subgenomes revealing massive discordance among individual gene trees. The coalescent-based tree reconstructed from 430 perfect-copy syntenic genes is shown in heavy black lines with backbone nodes without 100% bootstrap support marked in red circles. The 430 individual gene trees are colored by the Robinson-Foulds distances relative to the coalescent tree. Pie charts along the backbone phylogeny present the proportion of gene trees supporting the represented topology (blue), the main alternative topology (green) and the remaining alternatives (purple).
