Panicinae(BEAST)CAL1

xml file for phylogenetic analyses and divergence time estimation in BEAST 1.8.4 using the nucleotide substitution models unlinked across codon position, a birth-death model with incomplete sampling as tree prior, an uncorrelated lognormal clock model for the rate variation among tree branches, and a calibration based only on external angiosperm fossils (eudicots and non-grass monocots) (calibration scheme 1). We used secondary calibrations in normal prior distributions for the following six crown nodes: subfamily Panicoideae (scheme 1: mean= 38.18 Mya, SD= 3.86), most recent common ancestor (MRCA) of supertribes Andropogonodae –Panicodae (mean= 30.31 Mya, SD= 3.27), supertribe Andropogonodae (mean= 28.5 Mya, SD= 3.33), tribe Andropogoneae (mean= 11.79 Mya, SD= 2.95), tribe Paspaleae (mean= 22.6 Mya, SD= 3.13), and supertribe Panicodae (mean= 25.46 Mya, SD= 7.76). Analyses were conducted using three independent runs of 100 million generations, sampling every 50,000, and discarding the first 25% of each run as burn-in.