Unraveling the genetic architecture of grain size in einkorn wheat through linkage and homology mapping and transcriptomic profiling.

ABSTRACT: Understanding the genetic architecture of grain size is a prerequisite to manipulating grain development and improving the potential crop yield. In this study, we conducted a whole genome-wide quantitative trait locus (QTL) mapping of grain-size-related traits by constructing a high-density genetic map using 109 recombinant inbred lines of einkorn wheat. We explored the candidate genes underlying QTLs through homologous analysis and RNA sequencing. The high-density genetic map spanned 1873 cM and contained 9937 single nucleotide polymorphism markers assigned to 1551 bins on seven chromosomes. Strong collinearity and high genome coverage of this map were revealed by comparison with physical maps of wheat and barley. Six grain size-related traits were surveyed in five environments. In total,

SUBMITTER: Yu K 

PROVIDER: S-EPMC6760303 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature