QTL mapping for Mediterranean corn borer resistance in European flint germplasm using recombinant inbred lines

BMC Genomics

Table 3 Summary of QTLs detected in the RIL population derived from a EP39 × EP42 evaluated in two environments under artificial infestation with corn borer eggs.

							Cross validation â_TS.ES^d
QTL bin^a	Confidence interval	LOD score	Flanking markers	R²_adj	p ^b	â^c	Median	Percentile (10, 90)	Frequency (%)	P
Stalk tunnel length (cm)
1.02	4-30	4.25	bnlg1014 umc1222	11.6		-2.83	-2.85	(-3.33, -2.42)	91.9
3.05	71-98	3.87	umc1174 umc1539	9.6		2.40	2.47	(2.14, 3.01)	78.7
8.05	4-21	3.46	umc1984 umc1858	9.6		2.57	2.63	(2.22, 3.22)	77.7
Final fit					33.2					8.7
Relative stalk tunnel length
8.05	9-21	4.91	umc1984 umc1858	15.0		0.02	0.02	(0.018, 0.027)	65.0
Final fit					28.4					0.0
Cob damage (1-9 scale) ^e
1.12	297-301	2.54	umc1725 umc1797	7.5		0.29	0.33	(0.29, 0.37)	29.0
Final fit					7.0					0.0
Silking (days)
1.03	51-70	3.22	umc1003 phi001	9.5		-0.94	-0.98	(-1.19, -0.85)	34.9
2.08	148-196	3.48	phi127 bnlg1520	11.2		2.11	2.19	(1.86, 2.63)	50.4
4.04	64-86	4.87	umc1963 umc1142	13.7		1.58	1.43	(1.19, 1.71)	55.3
4.06	124-138	2.80	umc1329 umc1847	8.2		-0.87	-1.07	(-1.29, -0.91)	59.7
8.05	22-30	10.8	umc1858 bnlg1812	29.4		-1.62	-1.41	(-1.64, -1.13)	92.1
9.05	61-85	5.49	umc1492 bnlg1812	15.9		1.35	1.27	(1.06, 1.55)	63.3
Final fit					45.5					18.9
Plant height (cm)
3.05	71-98	5.97	umc1174 umc1539	16.6		5.04	5.27	(4.18, 6.94)	98.4
Final fit					16.1					12.8
Grain humidity (%)
3.05	71-101	5.60	umc1539 bnlg197	16.0		0.63	0.66	(0.51, 0.89)	95.8
Final fit					11.7					0.7
Yield (t ha ^-1 )
4.08	158-192	2.44	umc1667 umc1573	7.3		0.21	0.22	(0.18, 0.26)	36.5
5.05	93-128	2.85	umc1591 umc1019	8.5		-0.18	-0.22	(-0.28, -0.19)	44.6
8.05	10-30	3.46	umc1858 bnlg1821	10.3		0.23	0.23	(0.20, 0.28)	39.8
8.08	55-66	4.07	umc1055 umc1384	12.5		0.25	0.24	(0.20, 0.32)	51.4
Final fit					22.5					9.06

^a Bin locations are designed by an X.Y code, where X is the linkage group containing the Bin and Y is the location of the Bin within the linkage group (Gardiner et al., 1993).
^b Proportion of the genotypic variance explained by detected QTL, adjusted for QTL × Environment interaction, and calculated using the whole data set.
^c Additive effects calculated in the whole data set. Positive additive effects indicate that the EP42 allele increases the value of the trait.
^d Median and percentiles of the additive effects, frequency of QTL detection and proportion of the genotypic variance explained by detected QTL alculated in 200 cross-validation runs.
^e Cob damage was estimated on a 9 point scale (9 = without injury; 1 = wholly damaged)

ISSN: 1471-2164