High Differentiation among Populations of Green Foxtail, Setaria viridis, in Taiwan and Adjacent Islands Revealed by Microsatellite Markers

Setaria viridis (L.) Beauv., or green foxtail, is native to Eurasia and the putative ancestor of foxtail millet. Due advantageous genetic characteristics S. viridis, it a model species for C4 plants. However, has seriously spread agricultural system around world because its wide adaptability. This study aimed understand distribution in Taiwan, also investigate diversity relationships among different wild populations. A total 141 collected at 10 sites with sampling sizes ranging from 8 24 plants Taiwan were analyzed by 13 highly polymorphic SSR markers, 6.1 alleles per locus detected our study. The mostly corresponded parts revealed PCoA phylogenetic tree. Similarly, results population structure showed significance collecting site geographical factors. Finally, extent gene flow was studied differentiation (FST) Nm values, two populations found significantly contain existence gene-flow events. In conclusion, pattern low heterozygosity within population, but high selfing attribute barriers sea mountain range flow. addition, founder effect may be other reason this structure.