title: Facts and hypotheses on the origin of S mutations and on the function of the S gene in Nicotiana alata and Lycopersicum peruvianum.
mesh_terms: D002875:Chromosomes / Q000648:ultrastructure; D005796:Genes; D009154:Mutation; D018521:Plant Physiological Phenomena; D010947:Plants, Toxic; D014026:Nicotiana