Genetic linkage analysis using DNA markers in sweetpotato

Yuki Monden, Makoto Tahara

Research output: Contribution to journalReview article

5 Citations (Scopus)

Abstract

Sweetpotato is one of the most important food crop species in the world, with more than 104,000,000 tons produced each year, and the breeding of superior cultivars with agronomically important traits, such as improved disease resistance, yield, and nutrient richness, is necessary, especially in developing countries. However, as a result of the crop’s complex genomic architecture, which results from its hexaploidy (2n = 6x = 90), high heterozygosity, huge genome, and outcrossing nature, the analysis of genetic linkage in sweetpotato has been challenging. In addition, the lack of whole genome sequences or gene annotations for cultivated hexaploids has interrupted the validation of mapped QTL regions and gene cloning. In spite of these technical difficulties, linkage map construction and QTL mapping analysis have been reported. This review summarizes the results of these linkage analyses, which used SSR, AFLP, and retrotransposon-based molecular markers, and describes future directions for the genetic analysis and marker-assisted breeding of this important but genetically complex crop species.

Original languageEnglish
Pages (from-to)41-51
Number of pages11
JournalBreeding Science
Volume67
Issue number1
DOIs
Publication statusPublished - 2017

Fingerprint

Genetic Linkage
hexaploidy
Genetic Markers
Breeding
linkage (genetics)
genetic techniques and protocols
quantitative trait loci
Genome
Molecular Sequence Annotation
Food
Retroelements
genetic markers
Disease Resistance
genome
retrotransposons
breeding
food crops
crops
outcrossing
Developing Countries

Keywords

  • DNA marker
  • Linkage map
  • Polyploidy
  • QTL mapping
  • Sweetpotato

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Plant Science

Cite this

Genetic linkage analysis using DNA markers in sweetpotato. / Monden, Yuki; Tahara, Makoto.

In: Breeding Science, Vol. 67, No. 1, 2017, p. 41-51.

Research output: Contribution to journalReview article

Monden, Yuki ; Tahara, Makoto. / Genetic linkage analysis using DNA markers in sweetpotato. In: Breeding Science. 2017 ; Vol. 67, No. 1. pp. 41-51.
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