Association mapping and favourable QTL alleles for fibre quality traits in Upland cotton (Gossypium hirsutum L.)

  • Cheng-Guang Dong
  • Juan Wang
  • Yu Yu
  • Bao-Cheng Li
  • Quan-Jia Chen
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Improving cotton fibre quality is a major breeding goal for Upland cotton in China. To investigate the genetic mechanisms of fibre quality, a diverse panel of 403 Upland cotton accessions was grown, and the fibre quality traits were measured in six different environments. Genotyping was performed with genomewide simple sequence repeats. A total of 201 markers were polymorphic and generated 394 allele loci, and 403 accessions were arranged into two subgroups using Structure software. Of the marker loci, 18.94% showed significant linkage disequilibrium (\(P< 0.05\)). A mixed linear model in association mapping showed that 51 associations were significant between 39 polymorphic loci and five fibre quality traits, according to best linear unbiased prediction, and in at least three of six environments. Of the 39 associated marker loci, 12 were coincident with previous studies. There were 41 typical accessions identified as containing favourable allele loci related to fibre quality traits. The identified favourable QTL alleles and typical accessions for fibre quality are excellent genetic resources for future cotton breeding in China.


Upland cotton fibre quality association mapping favourable allele Gossypium hirsutum



This programme was financially supported by The National Natural Science Foundation of China (31260340). We thank Fang Lei, Zeng Yanda, and Wang Qun from Nanjing Agricultural University for help with analysis.

Supplementary material

12041_2017_878_MOESM1_ESM.docx (421 kb)
Supplementary material 1 (docx 421 KB)


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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  • Cheng-Guang Dong
    • 1
    • 2
  • Juan Wang
    • 2
  • Yu Yu
    • 2
  • Bao-Cheng Li
    • 2
  • Quan-Jia Chen
    • 1
  1. 1.College of AgricultureXinjiang Agricultural University, Xinjiang Uygur Autonomous RegionUrumqiPeople’s Republic of China
  2. 2.Cotton Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Key Laboratory of China Northwesten Inland RegionMinistry of AgricultureShiheziPeople’s Republic of China

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