Dataset Information


GRAS-Di system facilitates high-density genetic map construction and QTL identification in recombinant inbred lines of the wheat progenitor Aegilops tauschii.

ABSTRACT: Due to large and complex genomes of Triticeae species, skim sequencing approaches have cost and analytical advantages for detecting genetic markers and building linkage maps. Here, we develop a high-density linkage map and identify quantitative trait loci (QTLs) for recombinant inbred lines of Aegilops tauschii, a D-genome donor of bread wheat, using the recently developed genotyping by Random Amplicon Sequencing-Direct (GRAS-Di) system, which facilitates skimming of the large and complicated genome and generates a large number of genetic markers. The deduced linkage groups based on the GRAS-Di genetic markers corresponded to the chromosome number of Ae. tauschii. We successfully identified stable QTLs for flowering time and spikelet shape-related traits. Genotype differences of RILs at the QTL-linked markers were significantly associated with the trait variations. In particular, one of the QTL-linked markers for flowering time was mapped close to VRN3 (also known as FLOWERING LOCUS T), which controls flowering. The GRAS-Di system is, therefore, an efficient and useful application for genotyping and linkage mapping in species with large and complex genomes, such as Triticeae species.

PROVIDER: S-EPMC7723059 | BioStudies |

REPOSITORIES: biostudies

Similar Datasets

| S-EPMC2780953 | BioStudies
| S-EPMC4935800 | BioStudies
| S-EPMC5180193 | BioStudies
| S-EPMC8573551 | BioStudies
| S-EPMC5338802 | BioStudies
| S-EPMC8085556 | BioStudies
| S-EPMC3972243 | BioStudies
| S-EPMC8305928 | BioStudies
| S-EPMC5291526 | BioStudies
| S-EPMC4145202 | BioStudies