Molecular Breeding

, Volume 34, Issue 4, pp 1797–1804 | Cite as

Quantitative trait loci analyses for resistance to Sclerotinia sclerotiorum and flowering time in Brassica napus

  • Dayong Wei
  • Jiaqin Mei
  • Ying Fu
  • Joseph O. Disi
  • Jiana Li
  • Wei Qian
Article
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Accepted:

Abstract

Sclerotinia stem rot of rapeseed (Brassica napus) has strong negative impacts on seed yield and quality. To elucidate the link between Sclerotinia disease resistance and flowering time in rapeseed, quantitative trait loci (QTL) analyses for resistance against Sclerotinia sclerotiorum and flowering time were carried out in a doubled haploid population derived from a cross between European winter and Chinese semi-winter rapeseed. Six and five QTL for resistance in the field (FR) and under controlled condition (SR) were identified, while 17 QTL were found for flowering time (FT) over 2 years. Among these, four FR QTL, two SR QTL, and three FT QTL clustered within an 8.1-cM region on linkage group C02, which was found to be homeologous with a region on A02 carrying one SR QTL and two FT QTL. The association between Sclerotinia resistance and FT was discussed.

Keywords

Brassica napus Sclerotinia sclerotiorum Quantitative trait loci Flowering time 
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Notes

Acknowledgments

We thank Norddeutsche Pflanzenzucht Hans-Georg Lembke KG, Germany, for developing the DH population. This study was supported by the Fundamental Research Funds for the Central Universities (XDJK2013A013, SWU113106), the Key Projects in the National Science & Technology (2010BAD01B02), National Natural Science Foundation of China (31171585), and Special Fund for Agro scientific Research in the Public Interest (201103016).

Supplementary material

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Dayong Wei
    • 1
  • Jiaqin Mei
    • 1
  • Ying Fu
    • 1
  • Joseph O. Disi
    • 1
    • 2
  • Jiana Li
    • 1
  • Wei Qian
    • 1
  1. 1.College of Agronomy and BiotechnologySouthwest UniversityChongqingChina
  2. 2.Department of Entomology and Plant PathologyAuburn UniversityAuburnUSA

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