Extent and structure of linkage disequilibrium in canola quality winter rapeseed (Brassica napus L.).

ABSTRACT: Linkage disequilibrium was investigated in canola quality winter rapeseed to analyze (1) the prospects for whole-genome association analyses and (2) the impact of the recent breeding history of rapeseed on linkage disequilibrium. A total of 845 mapped AFLP markers with allele frequencies >or=0.1 were used for the analysis of linkage disequilibrium in a population of 85 canola quality winter rapeseed genotypes. A low overall level of linkage disequilibrium was found with a mean r (2) of only 0.027 over all 356,590 possible marker pairs. At a significance threshold of P = 2.8 x 10(-7), which was derived by a Bonferroni correction from a global alpha-level of 0.1, only 0.78% of the marker pairs were in significant linkage disequilibrium. Among physically linked marker pairs, the level of link

SUBMITTER: Ecke W 

PROVIDER: S-EPMC2820662 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature