Genetic diversity of Elaeis oleifera (HBK) Cortes populations using cross species SSRs

Implication's for germplasm utilization and conservation

Maizura Ithnin, Chee Keng Teh, R Wickneswari V Ratnam

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: The Elaeis oleifera genetic materials were assembled from its center of diversity in South and Central America. These materials are currently being preserved in Malaysia as ex situ living collections. Maintaining such collections is expensive and requires sizable land. Information on the genetic diversity of these collections can help achieve efficient conservation via maintenance of core collection. For this purpose, we have applied fourteen unlinked microsatellite markers to evaluate 532 E. oleifera palms representing 19 populations distributed across Honduras, Costa Rica, Panama and Colombia. Results: In general, the genetic diversity decreased from Costa Rica towards the north (Honduras) and south-east (Colombia). Principle coordinate analysis (PCoA) showed a single cluster indicating low divergence among palms. The phylogenetic tree and STRUCTURE analysis revealed clusters based on country of origin, indicating considerable gene flow among populations within countries. Based on the values of the genetic diversity parameters, some genetically diverse populations could be identified. Further, a total of 34 individual palms that collectively captured maximum allelic diversity with reduced redundancy were also identified. High pairwise genetic differentiation (Fst>0.250) among populations was evident, particularly between the Colombian populations and those from Honduras, Panama and Costa Rica. Crossing selected palms from highly differentiated populations could generate off-springs that retain more genetic diversity. Conclusion: The results attained are useful for selecting palms and populations for core collection. The selected materials can also be included into crossing scheme to generate offsprings that capture greater genetic diversity for selection gain in the future.

Original languageEnglish
Article number37
JournalBMC Genetics
Volume18
Issue number1
DOIs
Publication statusPublished - 19 Apr 2017

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Honduras
Costa Rica
Population
Panama
Colombia
Central America
Gene Flow
South America
Malaysia
Microsatellite Repeats
Cluster Analysis
Maintenance
Genes

Keywords

  • Elaeis oleifera
  • Germplasm conservation
  • Germplasm utilization
  • Microsatellites
  • Population structure

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Genetic diversity of Elaeis oleifera (HBK) Cortes populations using cross species SSRs : Implication's for germplasm utilization and conservation. / Ithnin, Maizura; Teh, Chee Keng; V Ratnam, R Wickneswari.

In: BMC Genetics, Vol. 18, No. 1, 37, 19.04.2017.

Research output: Contribution to journalArticle

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