Discrimination of candidate subgenome-specific loci by linkage map construction with an S₁ population of octoploid strawberry (Fragaria × ananassa).

ABSTRACT:

Background

The strawberry, Fragaria × ananassa, is an allo-octoploid (2n = 8x = 56) and outcrossing species. Although it is the most widely consumed berry crop in the world, its complex genome structure has hindered its genetic and genomic analysis, and thus discrimination of subgenome-specific loci among the homoeologous chromosomes is needed. In the present study, we identified candidate subgenome-specific single nucleotide polymorphism (SNP) and simple sequence repeat (SSR) loci, and constructed a linkage map using an S₁ mapping population of the cultivar 'Reikou' with an IStraw90 Axiom® SNP array and previously published SSR markers.

Results

The 'Reikou' linkage map consisted of 11,574 loci (11,002 SNPs and 572 SSR loci) spanning 2816.5 cM of 31 linkage groups

SUBMITTER: Nagano S 

PROVIDER: S-EPMC5429521 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature