QTLs maintaining grain fertility under salt stress detected by exome QTL-seq and interval mapping in barley.

ABSTRACT: Enhancing salt stress tolerance is a key strategy for increasing global food production. We previously found that long-term salinity stress significantly reduced grain fertility in the salt-sensitive barley (Hordeum vulgare) accession, 'OUC613', but not in the salt-tolerant accession, 'OUE812', resulting in large differences in grain yield. Here, we examined the underlying causes of the difference in grain fertility between these accessions under long-term treatment with 150 or 200 mM NaCl from the seedling stage to harvest and identified quantitative trait loci (QTLs) for maintaining grain fertility. In an artificial pollination experiment of the two accessions, grain fertility was significantly reduced only in OUC613 plants produced using pollen from plants grown under NaCl stress

SUBMITTER: Kodama A 

PROVIDER: S-EPMC6345237 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature