Exploring GWAS and genomic prediction to improve Septoria tritici blotch resistance in wheat.

ABSTRACT: Septoria tritici blotch (STB) is a destructive foliar diseases threatening wheat grain yield. Wheat breeding for STB disease resistance has been identified as the most sustainable and environment-friendly approach. In this work, a panel of 316 winter wheat breeding lines from a commercial breeding program were evaluated for STB resistance at the seedling stage under controlled conditions followed by genome-wide association study (GWAS) and genomic prediction (GP). The study revealed a significant genotypic variation for STB seedling resistance, while disease severity scores exhibited a normal frequency distribution. Moreover, we calculated a broad-sense heritability of 0.62 for the trait. Nine single- and multi-locus GWAS models identified 24 marker-trait associations grouped into 20 quant

SUBMITTER: Zakieh M 

PROVIDER: S-EPMC10511425 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature