Abstract
ABSTRACTTwo hundred F2:3 families of rapeseed (Brassica napus L.) derived from crossing between cv. SLMO46 (winter type and cold resistant) and cv. Quantum (spring type and susceptible to low temperature) were used as genetic material. Winter survival of F3 plants was measured in a complete block design with two replications. The polymorphism of parental lines was assessed using RAPD method and 47 RAPD markers, polymorphic between parental lines were used to screen F2 individuals. By using of the polymorphic markers linkage map was constructed as the markers were assigned into 9 linkage groups with total length of 860.8 cM and an average distance of 20.49 cM between adjacent markers. The relationship between winter survival and genotypic data was analyzed using composite interval mapping (CIM) method and one putative QTL was detected that explained five percents of phenotypic variances of this trait. This QTL is located on 6th linkage group and had negative additive effect.
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