1. Linkage and QTL mapping for Sus scrofa chromosome 6.
- Author
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Yue, G., Stratil, A., Cepica, S., Schröffel Jr., J., Schröffelffelova, D., Fontanesi, L., Cagnazzo, M., Moser, G., Bartenschlager, H., Reiner, G., and Geldermann, H.
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WILD boar ,GENE mapping ,ANIMAL genome mapping ,CHROMOSOMES ,ANIMAL genetics ,ANIMAL breeding - Abstract
Linkage maps have been constructed for Sus scrofa chromosome 6 (SSC6) based on 17 markers, of which 10 were used in all three F
2 families of Wild Boar (W), Meishan (M) and Pietrain (P) crosses. The coverage of the linkage maps of SSC6 was almost complete. All loci were ordered identically in the families, but two intervals (RYR1-A1BG-EAH, S0146-S0003-SW824) differed from published maps. Major quantitative trait loci (QTLs) for meat quality, stress resistance and carcass composition explaining up to 59% of F2 phenotypic variance have been mapped in the M x P and W x P families centred on the segregating R YR1 T and C alleles. In the W × M family, which was homozygous for the RYR1 C allele, no QTL effects for meat quality and stress-resistance, but moderate effects for carcass composition have been observed in this region. These findings indicate further loci closely linked with the RYR1 or/and further alleles at the RYR1 locus, involved in the variation of carcass and growth traits. [ABSTRACT FROM AUTHOR]- Published
- 2003
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