Interplay between extreme drift and selection intensities favors the fixation of beneficial mutations in selfing maize populations.

ABSTRACT: Population and quantitative genetic models provide useful approximations to predict long-term selection responses sustaining phenotypic shifts, and underlying multilocus adaptive dynamics. Valid across a broad range of parameters, their use for understanding the adaptive dynamics of small selfing populations undergoing strong selection intensity (thereafter High Drift-High selection regime, HDHS) remains to be explored. Saclay Divergent Selection Experiments (DSEs) on maize flowering time provide an interesting example of populations evolving under HDHS, with significant selection responses over 20 generations in two directions. We combined experimental data from Saclay DSEs, forward individual-based simulations, and theoretical predictions to dissect the evolutionary mechanisms at play in

SUBMITTER: Desbiez-Piat A 

PROVIDER: S-EPMC8633138 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature