Table 6.

Examples of testing double reduction at four randomly chosen SNPs in a full-sib family of autohexaploid chrysanthemum

SNP ID	SNP-5			SNP-130			SNP-406			SNP-558
Genotype	6A	A_a_	6a	6A	A_a_	6a	6A	A_a_	6a	6A	A_a_	6a
Observed frequency	0.1539	0.6593	0.1868	0.6308	0.3385	0.0308	0.5303	0.3030	0.1667	0.0421	0.3053	0.6526
Expected frequency	0.0099	0.9662	0.0239	0.5186	0.4814	1.24 × 10−06	0.1628	0.0369	0.0003	1.64 × 10−06	0.4984	0.5016
Chi-square value	3.31			763.6			88.5			1078.39
p-value	0.19			1.53 × 10−166			5.94 × 10−20			6.76 × 10−235