A major quantitative trait locus on chromosome A9, BnaPh1, controls homoeologous recombination in Brassica napus.

ABSTRACT: Ensuring faithful homologous recombination in allopolyploids is essential to maintain optimal fertility of the species. Variation in the ability to control aberrant pairing between homoeologous chromosomes in Brassica napus has been identified. The current study exploited the extremes of such variation to identify genetic factors that differentiate newly resynthesised B. napus, which is inherently unstable, and established B. napus, which has adapted to largely control homoeologous recombination. A segregating B. napus mapping population was analysed utilising both cytogenetic observations and high-throughput genotyping to quantify the levels of homoeologous recombination. Three quantitative trait loci (QTL) were identified that contributed to the control of homoeologous recombination in t

SUBMITTER: Higgins EE 

PROVIDER: S-EPMC7984352 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature