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ultradense genetic recombination map for Brassica napus, consisting of 13551 SRAP markers
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ultradense genetic recombination map for Brassica napus, consisting of 13551 SRAP markers
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Journal Article
ultradense genetic recombination map for Brassica napus, consisting of 13551 SRAP markers
2007
Overview
Sequence related amplified polymorphism (SRAP) was used to construct an ultradense genetic recombination map for a doubled haploid (DH) population in B. napus. A total of 1,634 primer combinations including 12 fluorescently labeled primers and 442 unlabeled ones produced 13,551 mapped SRAP markers. All these SRAPs were assembled in 1,055 bins that were placed onto 19 linkage groups. Ten of the nineteen linkage groups were assigned to the A genome and the remaining nine to the C genome on the basis of the differential SRAP PCR amplification in two DH lines of B. rapa and B. oleracea. Furthermore, all 19 linkage groups were assigned to their corresponding N1-N19 groups of B. napus by comparison with 55 SSR markers used to construct previous maps in this species. In total, 1,663 crossovers were detected, resulting in a map length span of 1604.8 cM. The marker density is 8.45 SRAPs per cM, and there could be more than one marker in 100 kb physical distance. There are four linkage groups in the A genome with more than 800 SRAP markers each, and three linkage groups in the C genome with more 1,000 SRAP markers each. Our studies suggest that a single SRAP map might be applicable to the three Brassica species, B. napus, B. oleracea and B. rapa. The use of this ultra high-density genetic recombination map in marker development and map-based gene cloning is discussed.
Publisher
Berlin/Heidelberg : Springer-Verlag,Springer,Springer Nature B.V
Subject
Biological and medical sciences
/ Classical genetics, quantitative genetics, hybrids
/ Fundamental and applied biological sciences. Psychology
/ Genetics
/ Genetics of eukaryotes. Biological and molecular evolution
/ genome
/ Genomics
/ haploidy
/ Random Amplified Polymorphic DNA Technique
/ Vegetals
