Genetic Characterization of Barley Nested Association Mapping Population using Genotype by Sequencing

Barley (Hordeum vulgare) is one of the major small grain cereals grown worldwide. Previous studies have reported a loss of genetic diversity in barley germplasm. In such scenario, Nested Association Mapping (NAM) population developed from a set of diverse parents is an invaluable resource for barley breeding and genetics research. We used Genotype by sequencing to characterize a large Barley NAM population developed using 99 diverse accessions from the core subset of National Small Grains Collection (NSGC) crossed to the cultivar Conlon. We report the patterns of linkage disequilibrium and recombination across the barley genome. This study provides useful data for future association mapping studies in Barley.