To facilitate fine mapping and gene cloning,variations of whole genome and dense QTL regions of Brassica napus were investigated by sequencing 2 parents(M083 and 888-5,with significant differences in plant height,branch numbers,flowering time and resistance to Sclerotinia disease) and their RIL(recombinant inbred line) population. Results showed that M083 and 888-5 genomes had large amount of variants,including1 941 397 and 2 046 009 SNPs,410 961 and 428 572 In Dels,90 384 and 88 456 SVs,46 655 and 46 008 C...