Genomic Scan of Male Fertility Restoration Genes in a 'Gulzow' Type Hybrid Breeding System of Rye (Secale cereale L.).

ABSTRACT: Efficient and stable restoration of male fertility (Rf) is a prerequisite for large-scale hybrid seed production but remains an inherent issue in the predominant fertility control system of rye (Secale cereale L.). The 'Gülzow' (G)-type cytoplasmic male sterility (CMS) system in hybrid rye breeding exhibits a superior Rf. While having received little scientific attention, one major G-type Rf gene has been identified on 4RL (Rfg1) and two minor genes on 3R (Rfg2) and 6R (Rfg3) chromosomes. Here, we report a comprehensive investigation of the genetics underlying restoration of male fertility in a large G-type CMS breeding system using recent advents in rye genomic resources. This includes: (I) genome-wide association studies (GWAS) on G-type germplasm; (II)

SUBMITTER: Vendelbo NM 

PROVIDER: S-EPMC8431178 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature