Molecular basis of heterosis and related breeding strategies reveal its importance in vegetable breeding.

ABSTRACT: Heterosis has historically been exploited in plants; however, its underlying genetic mechanisms and molecular basis remain elusive. In recent years, due to advances in molecular biotechnology at the genome, transcriptome, proteome, and epigenome levels, the study of heterosis in vegetables has made significant progress. Here, we present an extensive literature review on the genetic and epigenetic regulation of heterosis in vegetables. We summarize six hypotheses to explain the mechanism by which genes regulate heterosis, improve upon a possible model of heterosis that is triggered by epigenetics, and analyze previous studies on quantitative trait locus effects and gene actions related to heterosis based on analyses of differential gene expression in vegetables. We also discuss the contribu

SUBMITTER: Yu D 

PROVIDER: S-EPMC8166827 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature