Fine Mapping of Two Interacting Loci for Transmission Ratio Distortion in Rice (Oryza sativa L.).

ABSTRACT: Transmission ratio distortion (TRD) denotes the observed allelic or genotypic frequency deviation from the expected Mendelian segregation ratios in the offspring of a heterozygote. TRD can severely hamper gene flow between and within rice species. Here, we report the fine mapping and characterization of two loci (TRD4.1 and TRD4.2) for TRD using large F₂ segregating populations, which are derived from rice chromosome segment substitution lines, each containing a particular genomic segment introduced from the japonica cultivar Nipponbare (NIP) into the indica cultivar Zhenshan (ZS97). The two loci exhibited a preferential transmission of ZS97 alleles in the derived progeny. Reciprocal crossing experiments using near-isogenic lines harboring three diffe

SUBMITTER: Zhang C 

PROVIDER: S-EPMC9002327 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature