The first genetic map of a synthesized allohexaploid Brassica with A, B and C genomes based on simple sequence repeat markers

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
S YangW J Zhou

Abstract

We present the first genetic map of an allohexaploid Brassica species, based on segregating microsatellite markers in a doubled haploid mapping population generated from a hybrid between two hexaploid parents. This study reports the first genetic map of trigenomic Brassica. A doubled haploid mapping population consisting of 189 lines was obtained via microspore culture from a hybrid H16-1 derived from a cross between two allohexaploid Brassica lines (7H170-1 and Y54-2). Simple sequence repeat primer pairs specific to the A genome (107), B genome (44) and C genome (109) were used to construct a genetic linkage map of the population. Twenty-seven linkage groups were resolved from 274 polymorphic loci on the A genome (109), B genome (49) and C genome (116) covering a total genetic distance of 3178.8 cM with an average distance between markers of 11.60 cM. This is the first genetic framework map for the artificially synthesized Brassica allohexaploids. The linkage groups represent the expected complement of chromosomes in the A, B and C genomes from the original diploid and tetraploid parents. This framework linkage map will be valuable for QTL analysis and future genetic improvement of a new allohexaploid Brassica species, and in ...Continue Reading

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Citations

Sep 9, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Chen TanZaiyun Li
Nov 25, 2016·Frontiers in Plant Science·Cunmin QuJia-Na Li
Jun 6, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kangni ZhangWeijun Zhou

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