GrainGenes Reference Report: TAG-97-721
Reference
TAG-97-721
Title
A genetic linkage map of durum wheat
Journal
Theoretical and Applied Genetics
Year
1998
Volume
97
Pages
721-728
Author
Blanco A
[ Show all 12 ]
Language
English
Abstract
A genetic linkage map of tetraploid wheat Triticum turgidum (L.) Thell.was constructed using segregation data from a population of 65 recombinant inbred lines (RILs) derived from a cross between the durum wheat cultivar Messapia and accession MG4343 of T. turgidum (L.) Thell. ssp dicoccoides (Korn.) Thell. A total of 259 loci were analysed, including 244 restriction fragment length polymorphisms (RFLPs), one PCR (polymerase chain reaction) marker (a sequence coding for a LMW (low-molecular-weight) glutenin subunit gene located at the Glu-B 3 locus), seven biochemical (six seed-storage protein loci and one isozyme locus) and seven morphological markers. A total of 213 loci were mapped at a LODgeq3 on all 14 chromosomes of the A and B genomes. The total length of the map is 1352 cM and the average distance between adjacent markers is 6.3 cM. Forty six loci could not be mapped at a LODgeq3. A fraction (18.6%) of the markers deviated significantly from the expected Mendelian ratios; clusters of loci showing distorted segregation were found on chromosomes 1B, 3AL, 4AL, 6AL and 7AL. The durum wheat map was compared with the published maps of bread wheat using several common RFLP markers and general features are discussed. The markers detected the known structural rearrangements involving chromosomes 4A, 5A and 7B as well as the translocation between 2B-6B, but not the deletion on 2BS. This map provides a useful tool for analysing and breeding economically important quantitative traits and for marker-assisted selection, as well as for studies of genome organisation in small grain cereal species.
External Databases
https://doi.org/10.1007/s001220050948
Allele
Rc-A1a (Triticum)
Gene
Pan2 (Triticum) Rc (Triticum) Gai1 (Triticum)
Map Data
T. turgidum, Messapia x dicoccoides
Probe
Keyword
Durum wheat Linkage map Mapping Morphological markers RFLP
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: TAG-97-721
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||