TABLE 1.

Estimated parameters of QTL identified in the genome scan for the corn pedigree data

		Single QTL model								Multi-QTL model
QTL	Linkage group	Position (cM)	Flanking markers	Confidence interval	σ2u	σ2v	σ2	ĥ2u (%)	LOD	Variance	Heritability (%)
qtl1	1	55.8	M098–M188	54.8–60.8	95.51	47.13	2.29	65.90	4.66	4.72	2.62
qtl2	4	142.0	M153–M178	140.0–144.0	124.74	64.18	2.30	65.23	5.05	97.18	53.85
qtl3	5	140.9	M156–M157	138.9–146.9	93.01	58.12	3.23	60.26	3.81	7.73	4.28
qtl4	5	175.9	M076–M007	172.9–191.9	81.79	50.56	2.08	60.84	5.80	13.48	7.47
qtl5	8	86.8	M035–M174	86.3–88.2	237.09	56.52	1.49	80.34	4.84	6.14	3.40
qtl6	9	122.9	M133–M015	120.9–126.9	99.38	52.05	1.94	64.80	5.78	16.16	8.95
qtl7	—	M097	M097	—	57.66	77.29	0.00	72.73	3.94	1.69	0.94
qtl8	—	M028	M028	—	79.29	63.41	0.90	55.22	5.44	2.81	1.56
Polygene	27.86	15.44
Residual										2.69	1.49

σ²_u is the estimated genetic variance for QTL, σ²_v is the polygenic variance, σ² is the residual variance, and ĥ²_u is the proportion of the total variance contributed by the QTL and is expressed as .