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GrainGenes Reference Report: TAG-100-519

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Reference	TAG-100-519
Title	Extended physical maps and a consensus physical map of the homoeologous group-6 chromosomes of wheat (Triticum aestivum L-em Thell.)
Journal	Theoretical and Applied Genetics
Year	2000
Volume	100
Pages	519-527
Author	Weng Y Tuleen NA Hart GE
Abstract	Summary: Extended physical maps of chromosomes 6A, 6B and 6D of common wheat (Triticum aestivum L. em Thell., 2n=6x=42, AABBDD) were constructed with 107 DNA clones and 45 homoeologous group-6 deletion lines. Two-hundred and ten RFLP loci were mapped, including three orthologous loci with each of 34 clones, two orthologous loci with each of 31 clones, one locus with 40 clones, two paralogous loci with one clone, and four loci, including three orthologs and one paralog, with one clone. Fifty five, 74 and 81 loci were mapped in 6A, 6B and 6D, respectively. The linear orders of the mapped orthologous loci in 6A, 6B and 6D appear to be identical and 65 loci were placed on a group-6 consensus physical map. Comparison of the consensus physical map with eight linkage maps of homoeologous group-6 chromosomes from six Triticeae species disclosed that the linear orders of the loci on the maps are largely, if not entirely, conserved. The relative distributions of loci on the physical and linkage maps differ markedly, however. On most of the linkage maps, the loci are either distributed relatively evenly or clustered around the centromere. In contrast, approximately 90% of the loci on the three physical maps are located either in the distal one-half or the distal two-thirds of the six chromosome arms and most of the loci are clustered in two or three segments in each chromosome
External Databases	http://link.springer.de/link/service/journals/00122/bibs/0100003/01000519.htm
Keyword	[ Hide all but 1 of 29 ] animal c-bands centromere chromosome maps common wheat deletion deletion lines dna gene-rich regions genetic mapping genetic markers genome hexaploid wheat hordeum vulgare l em thell linkage linkage groups linkage map linkage maps loci locus map molecular mapping physical mapping rflp rna multigene family triticeae triticum triticum aestivum

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