Project description:A wheat–Thinopyrum chromosome substitution line (GLA3) was characterized at the genomic level using genotyping-by-sequencing (GBS). In the GLA3 line, a Thinopyrum-derived group 3 chromosome (3J) replaces wheat chromosome 3D. To confirm the chromosomal composition, identify the homoeologous relationships of the alien chromosome, and detect potential chromosomal rearrangements or deletions, GBS read coverage analysis was performed. Short reads from the GLA3 introgression line were aligned to the wheat (Triticum aestivum IWGSC RefSeq v2.1) and Thinopyrum intermedium (v3.1) reference genomes, revealing the absence of chromosome 3D and the presence of Thinopyrum group 3 chromatin predominantly of J-genome origin.
