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Map 5AL, CS x CS-TDIC DS5A
Species Triticum aestivum
Parent CS-TDIC DS5A
Chinese Spring
Type Genetic
Map_units cM (Kosambi)
Reference Genomic targeting and high-resolution mapping of the
domestication gene Q in wheat
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.
Image 5AL_Q_map
Locus[Show (25)]
Data_curated Carollo, Victoria 03.03
Breakpoint 5AL-7
5AL-23
Breakpoint_interval 5AL7-0.87-0.87
5AL23-0.87-1.00
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