Construction of phylogenetic trees of plant species

With the above information, the v0.66839 Toolkit for Biologists integrating various biological data-handling tools (TBtools) was used to generate the Newick (nwk) files with Latin names of species as input files according to the previous methods under the default parameters (Chen et al. 2018). The nwk files were employed to construct phylogenetic trees using the v6 Molecular Evolutionary Genetics Analysis software under the default parameters (Tamura et al. 2013).

The polyploidy events, such as whole-genome triplication (WGT), whole-genome duplication (WGD) and whole-genome sextuplication (WGS), of plant species came from research in Qu et al. (2018).