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  • Title: Comparative mapping of wheat chromosome 1AS which contains the tiller inhibition gene (tin) with rice chromosome 5S.
    Author: Spielmeyer W, Richards RA.
    Journal: Theor Appl Genet; 2004 Oct; 109(6):1303-10. PubMed ID: 15448895.
    Abstract:
    The capacity to tiller is a key factor that determines plant architecture. Using molecular markers, a single major gene reducing tiller number, formally named the tiller inhibition gene ( tin), was mapped to the short arm of chromosome 1A in wheat. We identified a tightly linked microsatellite marker ( Xgwm136) that may be useful in future marker-assisted selection. The tin gene was mapped to the distal deletion bin of chromosome 1AS (FLM value 0.86) and wheat ESTs which were previously mapped to the same deletion bin were used to identify 18 closely related sequences in the syntenic region of rice chromosome 5. For a subset of wheat ESTs that detected flanking markers for tin, we identified closely related sequences within the most distal 300 kb of rice chromosome 5S. The synteny between the distal chromosome ends of wheat 1AS and rice 5S appeared to be disrupted at the hairy glume locus and seed storage protein loci. We compared map position of tin with other reduced tillering mutants characterised in other cereals to identify possible orthologous genes.
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