Genomic prediction of threshability in naked barley

Abstract Threshability, defined here as the propensity of grains to lose their hull after harvest, is a key trait in naked barley ( Hordeum vulgare L.). While threshability defining characteristic and has been found be associated with grain size shape, its genetic architecture poorly described. The goals this study were identify quantitative loci evaluate utility covariates genomic prediction models. A genome‐wide association identified two on chromosomes 2H 3H threshability. locus chromosome accounted for 9.9% phenotypic variance explained (PVE). 7.8% PVE. With effects 0.18 0.29 each marker, respectively, these markers could have limited impact when implemented marker‐assisted selection. Predictive ability was 0.842 using structured best linear unbiased model. Incorporation significant associations model did not improve predictive ability. improved by use multi‐trait including test weight. high overall indicate that selection would useful barley.