Comparing wMAS, GWAS, and genomic prediction for selecting powdery mildew-resistant spring barley genotypes.

ABSTRACT:

Background

Barley is one of the most widely cultivated cereals worldwide, and powdery mildew is among the major diseases threatening global barley production. Our study evaluated 370 spring barley breeding lines under controlled greenhouse growth conditions.

Results

Using genome-wide association study (GWAS), 21 quantitative trait loci (QTL) were identified associated with seedling-stage powdery mildew resistance. Of these, eight were newly identified in this study. Genetic merit was also calculated using major-effect markers, and a positive correlation (> 0.7) was observed between the genetic merit and BLUP (AUDPC) values in both the two subpopulations of two- and six-row barley. While evaluating the performance of genomic prediction (GP) models, a GWAS-incorporated GP mode

SUBMITTER: Noe SM 

PROVIDER: S-EPMC12690920 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature