BMC Plant Biology

Table 3 Summary of QTL mapped in the RIL population derived from B73 × CML103 under MCB infestation using a genetic map with an average interval between markers of 10 cM

From: Identification of QTL for resistance to Mediterranean corn borer in a maize tropical line to improve temperate germplasm

QTL position					Genetic variability explained (%)				Additive mean effect^e
bin^a	cM	95 % CI^b (cM)	LOD^c	Flanking markers’ positions (bp)	DS^d	ES^d	TS^d	Bias^d	DS	ES	TS	Bias	Freq^f	\( \left({\widehat{R}}^2\right) \) ^g
Tunnel length (cm)
1.07-1.08	123	107-139	3.53	218577918-235278541	13.22	17.39	5.66	0.67	−3.00	−3.46	−1.91	0.45	0.49	6.5
5.03	77	68-86	6.63	30460922-73132746	24.14	21.57	16.77	0.22	−4.06	−3.88	−3.66	0.06	1.00	11.8
6.05-6.06	52	38-66	4.08	147913712- 156011668	14.83	18.11	9.82	0.46	−3.12	−3.60	−2.64	0.27	0.69	7.3
Stalk damaged (%)
1.07-1.08	121	103-139	3.16	218577918-235278541	18.09	25.64	1.01	0.96	−1.15	−1.47	−0.63	0.57	0.26	6.5
6.05-6.06	52	34-70	3.01	147913712-156011668	14.62	21.84	0.42	0.98	−1.06	−1.34	−0.51	0.62	0.24	5.3
Stalk lodging (%)
5.07-5.08	149	135-163	3.88	211274389-213564164	16.97	20.16	1.89	0.91	−4.08	−4.47	−2.2	0.51	0.41	5.8
Kernel resistance (1-9)^h
5.00-5.01	0	0-16	3.37	417591-3366862	10.1	15.09	−2.97	1.20	0.10	0.13	0.02	0.85	0.20	3.5
Shank resistance (1-9)^h
2.09	142	126-153	3.41	230206347-233622738	66.17	70.9	29.48	0.58	0.25	0.26	0.19	0.27	0.73	7.3
Plant height (cm)
5.03	75	67-83	7.51	30460922-73132746	15.64	15.29	9.48	0.38	−8.91	−8.79	−8.31	0.05	0.90	13.3
7.03	83	70-96	4.15	135637466-153719657	7.09	8.59	1.52	0.82	−5.70	−6.29	−2.51	0.60	0.38	6.0
Days to silking
6.05-6.06	51	35-67	3.55	147913712-156011668	5.34	8.42	1.35	0.84	0.62	0.83	0.39	0.53	0.29	4.3
8.00-8.01	3	0-20	3.22	578045-4383913	7.32	9.1	0.53	0.94	−0.78	−0.87	−0.30	0.66	0.28	5.9
9.02-9.04	53	35-71	3.09	20223300-110404915	11.59	12.67	3.95	0.69	0.99	1.04	0.74	0.29	0.55	9.3
Yield (Mg ha⁻¹)
1.10	159	144-174	3.69	274576136-281980858	8.43	10.43	2.23	0.79	0.43	0.48	0.21	0.56	0.34	5.9
6.01-6.02	1	0-9	6.74	9498146-88522572	16.76	17.11	12.01	0.30	−0.64	−0.60	−0.58	0.03	0.95	11.7
7.05-7.06	137	119-137	3.03	172883402-176785230	7.4	10.25	0.4	0.96	−0.40	−0.47	−0.06	0.87	0.17	5.2

^aBin 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 [16] . Bins were based on the physical position of flanking markers
^b95 % confidence interval as explained in Utz (17)
^cLOD score in the LOD-profile used in scanning for QTL
^dDS, estimation in the complete data set; ES, average values of the 1000 estimation sets (80 % of the genotypes of DS) in cross-validation; TS, average values of the 1000 validation sets (20 % of the genotypes of DS) in cross validation; Bias, estimation bias calculated as the difference between ES and TS estimations divided by ES estimation
^eAdditive effect of the QTL estimated as half the difference between the genotypic values f the two homozygotes. A positive estimation means that CML103 carries the allele with higher value
^fFrequency in cross-validation of QTL found within the 1-LOD support interval
^g Proportion of phenotypic variance which is explained by the QTL
^hsubjective visual resistance scale of 1 to 9 in which 1 indicates completely damaged and 9 indicate no damaged by the larvae

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