Genotyping of DNA pools identifies untapped landraces and genomic regions to develop next-generation varieties.

ABSTRACT: Landraces, that is, traditional varieties, have a large diversity that is underexploited in modern breeding. A novel DNA pooling strategy was implemented to identify promising landraces and genomic regions to enlarge the genetic diversity of modern varieties. As proof of concept, DNA pools from 156 American and European maize landraces representing 2340 individuals were genotyped with an SNP array to assess their genome-wide diversity. They were compared to elite cultivars produced across the 20th century, represented by 327 inbred lines. Detection of selective footprints between landraces of different geographic origin identified genes involved in environmental adaptation (flowering times, growth) and tolerance to abiotic and biotic stress (drought, cold, salinity). Promising landraces we

SUBMITTER: Arca M 

PROVIDER: S-EPMC10214759 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature