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Title: A consensus linkage map of oil palm and a major QTL for stem height
Authors: Lee, M
Xia, J.H
Zou, Z
Ye, J
Rahmadsyah, R AndD Department, Wilmar International Plantation, Palembang, Indonesia
Alfiko, Y
Jin, J 
Lieando, J.V
Purnamasari, M.I
Lim, C.H
Suwanto, A
Wong, L 
Chua, N.-H 
Yue, G.H 
Keywords: breeding
dura mater
genetic improvement
genetic linkage
genetic marker
phenotypic variation
single nucleotide polymorphism
stem elongation
chromosome map
genotyping technique
plant gene
quantitative trait
quantitative trait locus
microsatellite DNA
Chromosome Mapping
Genes, Plant
Genetic Linkage
Genotyping Techniques
Microsatellite Repeats
Polymorphism, Single Nucleotide
Quantitative Trait Loci
Quantitative Trait, Heritable
Issue Date: 2015
Citation: Lee, M, Xia, J.H, Zou, Z, Ye, J, Rahmadsyah, R AndD Department, Wilmar International Plantation, Palembang, Indonesia, Alfiko, Y, Jin, J, Lieando, J.V, Purnamasari, M.I, Lim, C.H, Suwanto, A, Wong, L, Chua, N.-H, Yue, G.H (2015). A consensus linkage map of oil palm and a major QTL for stem height. Scientific Reports 5 : 8232. ScholarBank@NUS Repository.
Abstract: Oil palm (Elaeis guinensis Jacquin) is the most important source of vegetable oil and fat. Several linkage maps had been constructed using dominant and co-dominant markers to facilitate mapping of QTL. However, dominant markers are not easily transferable among different laboratories. We constructed a consensus linkage map for oil palm using co-dominant markers (i.e. microsatellite and SNPs) and two F 1 breeding populations generated by crossing Dura and Pisifera individuals. Four hundreds and forty-four microsatellites and 36 SNPs were mapped onto 16 linkage groups. The map length was 1565.6 cM, with an average marker space of 3.72 cM. A genome-wide scan of QTL identified a major QTL for stem height on the linkage group 5, which explained 51% of the phenotypic variation. Genes in the QTL were predicted using the palm genome sequence and bioinformatic tools. The linkage map supplies a base for mapping QTL for accelerating the genetic improvement, and will be also useful in the improvement of the assembly of the genome sequences. Markers linked to the QTL may be used in selecting dwarf trees. Genes within the QTL will be characterized to understand the mechanisms underlying dwarfing.
Source Title: Scientific Reports
ISSN: 2045-2322
DOI: 10.1038/srep08232
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