THE POPULATION-GENETICS OF THE SELF-INCOMPATIBILITY POLYMORPHISM IN PAPAVER RHOEAS .10. AN ASSOCIATION BETWEEN INCOMPATIBILITY GENOTYPE ANDSEED DORMANCY

Further analysis of data presented in a previous paper (Lane and Lawre nce, 1995) has revealed an association between incompatibility genotyp e and seed dormancy such that the seed of crosses in which the wild-ty pe allele, S-10, was segregating was a little less dormant, and those in which S-11 was segregating was slightly more dormant, than the aver age for the families in which these crosses occurred. It is argued tha t this association is caused by the linkage of the S-locus to one or m ore genes that determine seed dormancy in this species and that this l inkage is one possible cause of the unequal S-allele frequencies obser ved in the natural population from which the wild-type parents of thes e progenies were obtained.