Table 1.

Amounts of single-locus dominance, overdominance, and digenic dominance in the IMF2 population identified in the entire genome on the basis of clusters

Trait	Year	Positive overdominance	Positive dominance	Negative dominance	Negative overdominance	Positive digenic dominance	Negative digenic dominance	Sum
Yield/plant	1998	4.509	0	−0.099	−1.214	1.242	−0.283	4.155
	1999	6.931	1.069	0	−0.875	1.352	−0.238	8.239
Tillers/plant	1998	1.308	0.123	−0.313	−2.222	1.519	−2.022	−1.607
	1999	2.021	0	−0.076	−0.763	2.561	−1.317	2.426
Grains/panicle	1998	4.241	0.458	−0.117	−0.806	0.423	−0.464	3.735
	1999	3.764	0.652	0	−0.460	0.157	−0.200	3.913
Grain weight	1998	1.122	0.419	−0.714	−0.772	0.950	−0.658	0.347
	1999	1.335	0.439	−0.597	−0.728	0.527	−0.446	0.530

The value presented for each component is the summation over loci divided by the trait mean. The single-locus effects were not included in the calculation if they are involved in dominance × dominance interactions.