Open AccessGenome‐Wide Association Analysis of Grain Yield‐Associated Traits in a Pan‐European Barley Cultivar Collection
Author(s) -
Xu Xin,
Sharma Rajiv,
Tondelli Alessandro,
Russell Joanne,
Comadran Jordi,
Schnaithmann Florian,
Pillen Klaus,
Kilian Benjamin,
Cattivelli Luigi,
Thomas William T. B.,
Flavell Andrew J.
Publication year - 2018
Publication title -
the plant genome
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.403
H-Index - 41
ISSN - 1940-3372
DOI - 10.3835/plantgenome2017.08.0073
Subject(s) - biology , hordeum vulgare , quantitative trait locus , single nucleotide polymorphism , cultivar , genome wide association study , candidate gene , association mapping , genome , gene , genetics , trait , hordeum , agronomy , genotype , poaceae , computer science , programming language
A collection of 379 Hordeum vulgare cultivars, comprising all combinations of spring and winter growth habits with two and six row ear type, was screened by genome wide association analysis to discover alleles controlling traits related to grain yield. Genotypes were obtained at 6,810 segregating gene‐based single nucleotide polymorphism (SNP) loci and corresponding field trial data were obtained for eight traits related to grain yield at four European sites in three countries over two growth years. The combined data were analyzed and statistically significant associations between the traits and regions of the barley genomes were obtained. Combining this information with the high resolution gene map for barley allowed the identification of candidate genes underlying all scored traits and superposition of this information with the known genomics of grain trait genes in rice resulted in the assignation of 13 putative barley genes controlling grain traits in European cultivated barley. Several of these genes are associated with grain traits in both winter and spring barley.