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GrainGenes Map Data Report: 5AL, CS x CS-TDIC DS5A

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Map Data
5AL, CS x CS-TDIC DS5A
Map
5AL, CS x CS-TDIC DS5A
Species
Triticum aestivum
Parent
CS-TDIC DS5A
Chinese Spring
Type
Genetic
Map Units
cM (Kosambi)
Reference
ReferenceFaris JD and Gill BS (2002) Genomic targeting and high-resolution mapping of the domestication gene Q in wheat Genome 45:706-718.
Contact
Faris, Justin
Remarks
The Q gene is thought to be involved in gene regulation and has effects on the free-threshing character of the spike and influences agronomic characters such as glume keeledness, rachis toughness, spike length, spike type and culm height. Several studies have mapped the Q gene to the long arm of chromosome 5A, and recently, Endo and Gill mapped Q to a cytological submicroscopic deletion interval on 5AL. See GrainGenes reference JHT-87-295.
In this study, AFLP and mRNA differential display were performed on deletion lines 5AL-23 and 5AL-7. Clones that were present in the interval between breakpoints 5AL-7 and 5AL-23 (which flanked the Q locus) were then used as RFLP probes to produce a high resolution map using a population of 190 F2s from Chinese Spring crossed with Chinese Spring with Triticum dicoccoides 5A chromosomes substituted into the genome (CS-TDIC DS5A). Markers were identified as close as 0.7 cM to the Q gene. This population was also scored for spike morphology.
The linkage map was produced using Mapmaker (v. 2.0) using the Kosambi mapping function and an LOD of 3.00.
Data Curator
Carollo, Victoria03.03
Image
5AL_Q_map
Locus
Q
[ Show all 25 ]
Breakpoint
5AL-7
5AL-23
Breakpoint Interval
5AL23-0.87-1.00
5AL7-0.87-0.87