QTL mapping of egg albumen quality in egg layers

Table 2 Best results from the initial QTL mapping based on 668 F ₂ individuals and HU

Chr	Marker map	Markers flanking the QTL and their genomic positions	F-ratios and corresponding boundaries for p-level (CI length in brackets)	Additive effect (SE)	Dominance effect (SE)	R²
7	MCW361-(1)- ADL326 -(54)- MCW183 -(31)-MCW236 -(10)- ADL0315	MCW183-MCW236 (24.25-29.72 Mb)	F = 8.32 (T01 8.76; T05 7.17) (CI = 57 cM)	14.0 (3.45)	1.83 (5.32)	0.04
26	MCW355-(13)- MCW285-(35)- ADL885	MCW285-ADL285 (2.50-4.91 Mb)	F = 6.04 (T05 7.01; T10 4.61) (CI = 49 cM)	12.51 (5.24)	27.22 (11.70)	0.02
4	MCW47-(43)- MCW5-(37)- ADL266-(15)- LEI94-(6)- MCW284-(12)- ADL331-(11)- MCW170-(5)- MCW180-(12)- MCW122-(6)- LEI119-(15)- MCW99-(9)- LEI73	MCW122-LEI119 (76.43-80.94 Mb)	F = 6.49 (T05 8.02; T10 5.02) (CI = 146 cM)	12.83 (3.66)	4.84 (5.74)	0.02
Z	ADL117-(22)- MCW331-(12)- MCW55-(6)- MCW258-(28)- LEI171-(4)- ADL201-(6)- MCW241-(5)- LEI229-(1)- MCW154-(1)- MCW246-(5)- LEI254-(1)- MCW294-(3)- ROS117-(3)- LEI111-(1)- LEI144-(1)- LEI121-(28)- LEI75-(5)- MCW269	MCW258-MCW241 (21.40-34.26 Mb)	F = 39.20 (T0001 19.03; T00119.98; T01 9.55; T05 6.52)	15.28 (2.44)	NA	0.02

Chr chromosome number; distances between markers (in parentheses) are based on Haldane’s mapping function; markers genotyped in the commercial line are indicated in bold; the markers flanking the QTL and their locations are indicated in Mb (WASHUC2), followed by F-ratios and corresponding boundaries for p-values, where T0001 to T10 represent p-level thresholds from 0.0001 to 0.05 (boundary for genome-wide mapping, T10 is a suggestive level QTL ); CI confidence interval, SE standard error; R² = proportion of phenotypic variance explained by QTL for the additive effect.

ISSN: 1297-9686