Fine analysis of a genomic region involved in resistance to Mediterranean corn borer

BMC Plant Biology

Table 1 Summary of QTL mapped in the HIFs derived from EP42xEP39 which were evaluated in a three-year experiment under MCB infestation

QTL position	LOD	Flanking marker’s positions (bp)	Additive mean effect^c
bin^a	LOD	Flanking marker’s positions (bp)	DS^b (\( \widehat{\alpha} \))	ES	TS	Bias	Freq^d	Phenot. V. (R²)^e
Stalk tunnel length (cm)
8.03–8.04	1.5	27,637,188–35,814,899	1.6	1.7	0.37	0.79	0.49	11.4
Plant height (cm)
8.03–8.04	3.0	108,499,269–112,617,651	5.5	5.4	4.7	0.13	0.95	26.7
Silking (days)
8.04	1.4	112,617,651–116,854,699	−0.44	−0.51	− 0.19	0.63	0.48	10.7
Yield (Mg ha⁻¹)
8.04	3.9	112,617,651–116,854,699	0.31	0.32	0.21	0.23	0.87	34.9

^aBin locations were designed by an X.Y code, where X was the linkage group containing the bin and Y was the location of the bin within the linkage group [53]
^bDS was the estimation for the complete data set; ES was the average value for the 1000 estimation sets; TS was the average value of the 1000 validation sets in cross validation; the bias was calculated as the difference between ES and TS estimations divided by the ES estimation
^cAdditive effect of the QTL estimated as half the difference between the genotypic values of the two homozygotes. A positive estimation means that EP42 carried the allele with higher value
^dDetection frequency of the QTL in the cross-validation test
^eProportion of phenotypic variance explained by each QTL

ISSN: 1471-2229