Journal of Applied Genetics

, Volume 49, Issue 4, pp 333–341 | Cite as

Mapping QTLs for pre-harvest sprouting tolerance on chromosome 2D in a synthetic hexaploid wheat×common wheat cross

  • Ren Xiao-bo
  • Lan Xiu-jin
  • Liu Deng-cai
  • Wang Jia-li
  • Zheng You-liang
Original Article


Based on segregation distortion of simple sequence repeat (SSR) molecular markers, we detected a significant quantitative trait loci (QTL) for pre-harvest sprouting (PHS) tolerance on the short arm of chromosome 2D (2DS) in the extremely susceptible population of F2 progeny generated from the cross of PHS tolerant synthetic hexaploid wheat cultivar ‘RSP’ and PHS susceptible bread wheat cultivar ‘88–1643’. To identify the QTL of PHS tolerance, we constructed two SSR-based genetic maps of 2DS in 2004 and 2005. One putative QTL associated with PHS tolerance, designatedQphs.sau-2D, was identified within the marker intervalsXgwm261-Xgwm484 in 2004 and in the next year, nearly in the same position, between markerswmc112 andXgwm484. Confidence intervals based on the LOD-drop-off method ranged from 9 cM to 15.4 cM and almost completely overlapped with marker intervalXgwm261-Xgwm484. Flanking markers near this QTL could be assigned to the C-2DS1-0.33 chromosome bin, suggesting that the gene(s) controlling PHS tolerance is located in that chromosome region. The phenotypic variation explained by this QTL was about 25.73–27.50%. Genotyping of 48 F6 PHS tolerant plants derived from the cross between PHS tolerant wheat cultivar ‘RSP’ and PHS susceptible bread wheat cultivar ‘MY11’ showed that the allele ofQphs.sau-2D found in the ‘RSP’ genome may prove useful for the improvement of PHS tolerance.


Pre-harvest sprouting QTL mapping segregation distortion simple sequence repeat synthetic hexaploid wheat Triticum aestivum 


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Copyright information

© Institute of Plant Genetics, Polish Academy of Sciences, Poznan 2008

Authors and Affiliations

  • Ren Xiao-bo
    • 1
  • Lan Xiu-jin
    • 1
    • 2
  • Liu Deng-cai
    • 1
    • 2
  • Wang Jia-li
    • 1
  • Zheng You-liang
    • 1
  1. 1.Triticeae Research InstituteSichuan Agricultural UniversitySichuanChina
  2. 2.Key Laboratory of Crop Genetic Resources and ImprovementMinistry of Education, Sichuan Agricultural UniversitySichuanChina

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