Skip to Main content Skip to Navigation
New interface
Conference poster

Evolution of inbreeding depression in species combining self-incompatibility and partial asexual reproduction

Abstract : The origin and maintaining of self-incompatibility systems in angiosperms are still debated questions. Based on the study of interactions between viability loci, causing inbreeding depression, and the S-locus, Charlesworth and Charlesworth (1979) demonstrated that self-compatibility can secondarily evolve through the breakdown of a SI system if inbreeding depression is small enough. The level of inbreeding depression in species that show a self-incompatibility system is a key parameter for the maintenance of the system. Several studies were developed to predict when the system can breakdown. In species combining both self-incompatibility and asexual reproduction, we hypothesize that the maintenance of the SI system may be due to the maintenance of inbreeding depression not only on locus directly linked to the S locus, but at the genome level due to asexual reproduction. We developed a model to simulate the evolution of inbreeding depression in a diploid species that reproduce both asexually and sexually with a self-incompatibility system. Four loci were studied: the S-locus that determines self-incompatibility, a viability locus and two neutral loci. We simulated different scenario, varying the population size, the selection intensity and the asexual reproduction rate. Results of this model will be presented.
Complete list of metadata
Contributor : Migration ProdInra Connect in order to contact the contributor
Submitted on : Thursday, April 1, 2021 - 11:23:12 AM
Last modification on : Wednesday, April 6, 2022 - 4:08:19 PM
Long-term archiving on: : Friday, July 2, 2021 - 6:24:06 PM


Files produced by the author(s)


  • HAL Id : hal-02755474, version 1
  • PRODINRA : 435014


Miguel Navascués, Solenn Stoeckel, Stéphanie Mariette. Evolution of inbreeding depression in species combining self-incompatibility and partial asexual reproduction. 11. Congress of the European Society of Evolutionary Biology (ESEB), Aug 2007, Uppsala, Sweden. 2007. ⟨hal-02755474⟩



Record views


Files downloads