STATISTICAL-METHODS FOR ESTIMATING THE EFFECTIVE NUMBER OF ALLELES, EXPECTED HETEROZYGOSITY AND GENETIC-DISTANCE IN SELF-INCOMPATIBILITY LOCUS

In order to understand the evolutionary process of self-incompatibilit y, we must know the genetic variability of the self-incompatibility ge nes within and between populations. Statistical methods for estimating the effective number of alleles, expected heterozygosity and genetic distance from pollination experiments were developed, which can be app lied to both gametophytic and sporophytic self-incompatibility systems . In these methods, bud-pollination, which is necessary for obtaining homozygotes, is not required. Since bud-pollination, which is time-con suming, is not required in the present methods, they might be useful.