Genetic Dissecting Complex Traits via Conventional QTL Analysis and Association Mapping

  • Chee-Keng TehEmail author
  • Nurshazwani Amalina Sudirman
  • Fairuz Farhana Mohd Rodzik
  • Ai-Ling Ong
  • Qi-Bin Kwong
  • David Ross Appleton
Part of the Compendium of Plant Genomes book series (CPG)


Oil palm yield has been stagnated for decades due to long selection cycle; therefore, marker-assisted selection was initiated. Many quantitative trait loci (QTL) for complex traits were dissected using conventional linkage analyses, but the results were inconsistent and unreproducible across families. The largest challenge is mainly limited recombination in small families leading to detection failure of QTLs. To enhance the detection power, genome-wide association studies (GWAS) access total recombination that accumulated in large multi-parental populations. However, false-positive signals must be monitored and controlled. The recent GWAS for mesocarp oil content revealed the major QTLs on Chromosome 5. This is where the researcher can start mining the candidate genes for further functional studies. In addition, prediction accuracy of genomic selection also can be improved by understanding the QTLs that have been investigated in GWAS. Many genetic tools and knowledge are well established now. This is the time for researchers to pick the right tools and plant materials to address the needs of the oil palm industry.


Genetic variation Linkage mapping GWAS Genomic selection 



We would like to express our appreciation to the book editor, Dr. Maizura Ithnin for inviting us. We also thank Sime Darby Plantation for supporting all the research works.


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Chee-Keng Teh
    • 1
    Email author
  • Nurshazwani Amalina Sudirman
    • 1
  • Fairuz Farhana Mohd Rodzik
    • 1
  • Ai-Ling Ong
    • 1
  • Qi-Bin Kwong
    • 1
  • David Ross Appleton
    • 1
  1. 1.Biotechnology and Breeding DepartmentSime Darby Plantation R&D CentreSerdangMalaysia

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