Theoretical and Applied Genetics

, Volume 127, Issue 4, pp 957–968 | Cite as

Quantitative trait loci that control the oil content variation of rapeseed (Brassica napus L.)

  • Congcong Jiang
  • Jiaqin Shi
  • Ruiyuan Li
  • Yan Long
  • Hao Wang
  • Dianrong Li
  • Jianyi Zhao
  • Jinling MengEmail author
Original Paper


Key message

This report describes an integrative analysis of seed-oil-content quantitative trait loci (QTL) in Brassica napus , using a high-density genetic map to align QTL among different populations.


Rapeseed (Brassica napus) is an important source of edible oil and sustainable energy. Given the challenge involved in using only a few genes to substantially increase the oil content of rapeseed without affecting the fatty acid composition, exploitation of a greater number of genetic loci that regulate the oil content variation among rapeseed germplasm is of fundamental importance. In this study, we investigated variation in the seed-oil content among two related genetic populations of Brassica napus, the TN double-haploid population and its derivative reconstructed-F2 population. Each population was grown in multiple experiments under different environmental conditions. Mapping of quantitative trait loci (QTL) identified 41 QTL in the TN populations. Furthermore, of the 20 pairs of epistatic interaction loci detected, approximately one-third were located within the QTL intervals. The use of common markers on different genetic maps and the TN genetic map as a reference enabled us to project QTL from an additional three genetic populations onto the TN genetic map. In summary, we used the TN genetic map of the B. napus genome to identify 46 distinct QTL regions that control seed-oil content on 16 of the 19 linkage groups of B. napus. Of these, 18 were each detected in multiple populations. The present results are of value for ongoing efforts to breed rapeseed with high oil content, and alignment of the QTL makes an important contribution to the development of an integrative system for genetic studies of rapeseed.


Quantitative Trait Locus Linkage Group Quantitative Trait Locus Mapping Epistatic Interaction Quantitative Trait Locus Region 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by the National Basic Research and Development Program (2006CB101600), P. R. China.

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

122_2014_2271_MOESM1_ESM.xlsx (10 kb)
Supplementary material 1. Temporal and spatial details of the 15 independent experiments that based on TN population (XLSX 10 kb)
122_2014_2271_MOESM2_ESM.xlsx (50 kb)
Supplementary material 2. The TN genetic map that used in this study (XLSX 50 kb)
122_2014_2271_MOESM3_ESM.xlsx (20 kb)
Supplementary material 3. Seed oil content QTL that identified in TN population (XLSX 20 kb)
122_2014_2271_MOESM4_ESM.xlsx (10 kb)
Supplementary material 4. Projected locations on TN genetic map of the QTL that identified in other populations (XLSX 10 kb)


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Congcong Jiang
    • 1
  • Jiaqin Shi
    • 1
  • Ruiyuan Li
    • 1
  • Yan Long
    • 1
  • Hao Wang
    • 2
  • Dianrong Li
    • 2
  • Jianyi Zhao
    • 3
  • Jinling Meng
    • 1
    Email author
  1. 1.National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanPeople’s Republic of China
  2. 2.Hybrid Rapeseed Research Centre of ShaanxiDaliPeople’s Republic of China
  3. 3.Institute of Crop and Nuclear Technology UtilizationZhejiang Academy of Agricultural SciencesHangzhouPeople’s Republic of China

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