Tree Genetics & Genomes

, Volume 6, Issue 1, pp 73–81

Characterization of the genetic diversity of the Tall coconut (Cocos nucifera L.) in the Dominican Republic using microsatellite (SSR) markers

  • Reina Teresa Martinez
  • Luc Baudouin
  • Angélique Berger
  • Michel Dollet
Original Paper

DOI: 10.1007/s11295-009-0229-6

Cite this article as:
Martinez, R.T., Baudouin, L., Berger, A. et al. Tree Genetics & Genomes (2010) 6: 73. doi:10.1007/s11295-009-0229-6

Abstract

The predominant coconut variety cultivated in the Dominican Republic is a local Tall, known as criollo. It was never characterized genetically. The Malayan Dwarf and its hybrid with the local Tall are also present. Thirteen accessions, representing nine localities, are planted in a collection at the Instituto Dominicano de Investigaciones Agropecuarias y Forestales (IDIAF). We explored genetic diversity in 114 individuals from this collection. The main aim was to detect possible relationship with resistant varieties to coconut lethal yellowing (LY) disease. Contrarily to what happened in other Caribbean countries, LY never became an epidemic in the Dominican Republic. Thirteen simple sequence repeats markers from a kit dedicated to coconut diversity were used. In addition to diversity parameters, we used Bayesian assignment tests and cluster analysis to determine its population structure and its relationship with other coconut populations. The criollo coconut proved to be a typical Indo-Atlantic variety and is probably highly susceptible to the usual LY pathogens. Local conditions and the nature of the local phytoplasma strain probably explain the particular epidemiology of LY in the Dominican Republic. As a cross-pollinating variety, the criollo presents polymorphism within a population, but there is little if any variation among populations. The marker study confirmed the hybrid status of each member of two accessions and, thus, the reliability of the sampling.

Keywords

Genetic diversity Cocos nucifera Lethal yellowing disease Microsatellite SSR 

Abbreviations

Coconut population abbreviations: full name–country

 

 

Pacific group = A

MYD

Malayan Yellow Dwarf–Malaysia

Indo-Atlantic group (typical) = B1

BRTxx

various populations from the Brazilian Tall–Brazil

CALT

Calangute Tall–India

CKT

Cameroon Kribi Tall–Cameroon

DRT

Dominican Republic Tall–Dominican Republic

JMT

Jamaica Tall–Jamaica

LMT

Laccadive Micro Tall–India

MXAT

Mexican Atlantic Tall–Mexico

SCT

Seychelles Tall–Seychelles Islands

SKGT

Sakhi Ghopal Tall–India

SLT

Sri Lanka Tall–Sri Lanka

TTOT

Trinidad and Tobago Tall–Trinidad and Tobago

WAT4+, WAT6

West African Tall–Côte d'Ivoire and Benin, respectively

WCT

Indian West Coast Tall–India

Indo-Atlantic group (introgressed) = B2

ADOT

Andaman Ordinary Tall–India

CMT

Comoro Moheli Tall–Comoros

EAT, EAT12

Two populations of the East African Tall–Tanzania

EAT15

East African Tall–Kenya

ECT

Indian East Coast Tall–India

KPDT

Kappadam Tall–India

LCT

Laccadives Ordinary Tall–India

MZT, MZTa, MZTb, MZTc, MZTd

various populations of the Mozambique Tall–Mozambique

SLT12

“Margaret” population of the Sri Lanka Tall–Sri Lanka

SNRT01

“Clovis” population of the San Ramon Tall–Sri Lanka

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Reina Teresa Martinez
    • 1
  • Luc Baudouin
    • 2
  • Angélique Berger
    • 2
  • Michel Dollet
    • 3
  1. 1.Instituto Dominicano de Investigaciones Agropecuarias y Forestales (IDIAF), Proteccion VegetalSanto DomingoDominican Republic
  2. 2.Centre International de Recherches en Agronomie pour le Développement (CIRAD)Montpellier Cedex 5France
  3. 3.Centre International de Recherches en Agronomie pour le Développement (CIRAD)Montpellier Cedex 5France

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