title: COMPUTER PROGRAMS: nessi: a program for numerical estimations in sporophytic self-incompatibility genetic systems.
abstract: nessi is a computer program generating predictions about allelic and genotypic frequencies at the S-locus in sporophytic self-incompatibility systems under finite and infinite populations. For any pattern of dominance relationships among self-incompatibility alleles, nessi computes deterministic equilibrium frequencies and estimates distributions in samples from finite populations of the number of alleles at equilibrium, allelic and genotypic frequencies at equilibrium and allelic and genotypic frequency changes in a single generation. These predictions can be used to rigorously test the impact of negative frequency-dependent selection on diversity patterns in natural populations.
authors.affiliation: GEPV - Laboratoire de Génétique et Evolution des Populations Végétales, UMR CNRS 8016, Université des Sciences et Technologies de Lille 1, F-59655 Villeneuve d'Ascq cedex, France.
authors.forename: S
authors.initials: S
authors.lastname: Billiard