The population genetics of the self-incompatibility polymorphism in papaver rhoeas. I. the number and distribution of S-alleles in families from three localities

Abstract

Though the self-incompatibility polymorphisms are as well-known as any and have been the subject of much theoretical investigation, little is known about their characteristics in natural populations. A preliminary survey of the extent of the polymorphism in P. rhoeas found 32 different S-alleles among eighteen full-sib families derived from natural populations growing in three widely separated localities in the West Midlands. Though most of these a'leles occurred in one or other of these populations only, an analysis of their distribution between localities failed to show any significant differentiation between them. These results are compared with those from other species and reasons are given for the apparent lack of differentiation between localities. © 1981 The Genetical Society of Great Britain.