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Linkage and QTL mapping for Sus scrofa chromosome 1
Author(s) -
Beeckmann P.,
Schröffel J.,
Moser G.,
Bartenschlager H.,
Reiner G.,
Geldermann H.
Publication year - 2003
Publication title -
journal of animal breeding and genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.689
H-Index - 51
eISSN - 1439-0388
pISSN - 0931-2668
DOI - 10.1046/j.0931-2668.2003.00418.x
Subject(s) - quantitative trait locus , biology , genetics , allele , genetic linkage , dominance (genetics) , chromosome , gene
Summary Linkage maps of Sus scrofa chromosome 1 (SSC1) have been produced using 10 markers in three different F 2 families based on crosses of Meishan (M), Pietrain (P) and Wild Boar (W). The maps were similar for the different families and show higher paternal recombination, especially in the interval SW2130 – SW803 . Quantitative trait loci (QTLs) affecting body conformation, carcass composition, fat deposition and numbers of teats were identified in all three families. Major QTLs were mapped in chromosomal intervals centred at approximately 60, 120 and 170 cM. The QTLs explain up to 8.4% of phenotypic variance in the F 2 generation. Pietrain QTL alleles were superior in comparison with Wild Boar and Meishan alleles for most of the trait values. Meishan alleles were associated with highest fat deposition. Additive gene effects were generally larger than dominance effects. QTL profiles on SSC1 differed between families, with the W × P family being most distinct.