Molecular evidence of RNA polymerase II gene reveals the origin of worldwide cultivated barley.

摘要: The origin and domestication of cultivated barley have long been under debate. A population-based resequencing phylogenetic analysis the single copy RPB2 gene was used to address domestication, explore genetic differentiation populations on worldwide scale, understand gene-pool exchanges during spread subsequent development cultivation. Our results revealed significant among three geographically distinct wild populations. Differences in haplotype composition from different geographical regions that modern originated two major populations: one Near East Fertile Crescent other Tibetan Plateau, supporting polyphyletic barley. frequencies supported multiple domestications coupled with widespread introgression events generated admixture between divergent pools. not only provide important insight into evolution barley, but also enhance our understanding selection pressures environments shaping diversity populations, thus further facilitating effective use germplasm.