Evolutionary patterns of ploidy and genome size variations show positive correlations with taxonomic diversity in tropical gingers (Zingiberaceae)

Premise: Cytogenetic traits such as an organism's chromosome number and genome size are taxonomically critical and can define angiosperm diversity. Variations in these cytogenetic traits by evolutionary processes such as polyploidization are known to be common, although underexplored in tropical plants. Zingiberaceae is a pantropical monocot family with ~1500 species where cytogenetic characters have often been used to define taxonomic boundaries, but a family-wide synthesis of cytogenetic patterns is absent.
Methods: A time-calibrated Bayesian phylogenetic tree was constructed to test for different models of chromosome number and genome size evolution in Zingiberaceae. We next tested how chromosome number and genome size variations differed with lineage-age, taxonomic diversity, and distributional range at two taxonomic ranks: within the family Zingiberaceae, and in the genus Hedychium using correlations, generalized linear models and phylogenetic least square models.
Key results: The ..., , , # Data from: Evolutionary patterns of chromosome counts and genome size variations show positive correlations with taxonomic diversity in tropical gingers (Zingiberaceae)

[https://doi.org/10.5061/dryad.g79cnp5w8](https://doi.org/10.5061/dryad.g79cnp5w8)

This dataset contains the following items:

* Complied table of genome sizes for Zingiberaceae containing data from the literature as well as primary data
* Complied table of chromosome counts for Zingiberaceae containing data from the literature as well as primary data
* A table containing accession details for all the sequences used to build Zingiberaceae phylogeny in this study (this is an output from OneTwoTree).
* Alignment file in fasta format used to reconstruct the Zingiberaceae phylogeny

**Supplementary data:**
* Figure showing the divergence dated tree of Zingiberaceae with bars on the node labels representing the divergence time and the bars representing the 95% HPD
* Figure showing chronogram of the Zingibe...