Dispersed emergence and protracted domestication of polyploid wheat uncovered by mosaic ancestral haploblock inference.

ABSTRACT: Major crops are all survivors of domestication bottlenecks. Studies have focused on the genetic loci related to the domestication syndrome, while the contribution of ancient haplotypes remains largely unknown. Here, an ancestral genomic haploblock dissection method is developed and applied to a resequencing dataset of 386 tetraploid/hexaploid wheat accessions, generating a pan-ancestry haploblock map. Together with cytoplastic evidences, we reveal that domesticated polyploid wheat emerged from the admixture of six founder wild emmer lineages, which contributed the foundation of ancestral mosaics. The key domestication-related loci, originated over a wide geographical range, were gradually pyramided through a protracted process. Diverse stable-inheritance ancestral haplotype groups of the c

SUBMITTER: Wang Z 

PROVIDER: S-EPMC9259585 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature