Table 1. Proportion of S-locus homozygous offspring having reached the reproductive stage for three different S-alleles.

The test is performed relative to the expected proportion of homozygous genotypes in the offspring (25% when both parents are heterozygous; 50% when one of the parents is homozygous and the other heterozygous).

S-allele	Level of dominance	Number of seedlings having reached the reproductive stage	Observed proportion of homozygotes	Ratio of the observed to expected proportion of homozygous genotypes (p-value*)	Number of heterozygotes with the S-allele (p-values*)
Ah01	I	35	0.29	1.14 (0.76)	19 (0.40; 0.90)
Ah03	II	27	0.074	0.3 (0.02)	17 (1; 0.69)
Ah04	III	96	0.479	0.96 (0.39)	50

Values departing from Mendelian expectations are figured in bold. For Ah04, the maternal parent was Ah04/Ah04, so all heterozygous offspring carried the S-allele.

^*p-Values were obtained after 10,000 random permutations, respectively.