Rate of double reduction and genetic variability in yield, quality, and senescence related traits in tetraploid potato (<i>Solanum tuberosum L.</i>).

ABSTRACT: The amount of genetic variability is the foundation for genetic change in any plant breeding program, and the amount of double reduction can influence genetic gain and the amount of future genetic diversity in polyploid species. Our study investigates these factors using variance components analysis on a dataset comprising 13,131 potato breeding lines and phenotypic data from Scandinavian environments spanning 17 years (2003 to 2021). Pedigree information was used in quantitative genetic models to estimate additive genetic variance and the relative importance of additive and non-additive genetic variance. We used two models, a baseline model (M1) without effects due to specific combining ability (SCA) and M2 (including SCA due to interaction between parental genomes). Two cross-validation

SUBMITTER: Yousaf MF 

PROVIDER: S-EPMC12007407 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature