Diversity and genetic structure of teak (Tectona grandis L.f) in its natural range using DNA microsatellite markers

Fofana Inza Jésus, Ofori Daniel, Poitel Mireille, Verhaegen Daniel. 2009. Diversity and genetic structure of teak (Tectona grandis L.f) in its natural range using DNA microsatellite markers. New Forests, 37 (2) : 175-195.

Quartile : Q3, Sujet : FORESTRY

Résumé : Teak (Tectona grandis L.f.) is considered to be an extraordinarily durable building timber with a worldwide reputation. Its widespread use has entailed the overexploitation of natural forests and a large reduction in natural diversity. Fifteen microsatellite markers were used to study the genetic variability and structure of 166 teak trees distributed over the whole natural area of teak. Analysis showed that in the teak natural area there were four main centers of genetic variability. Two clusters were in India and could be considered as main centers of genetic diversity in teak. The third cluster mainly consisting of populations in Thailand and Laos was genetically very distinct from the Indian populations but presented only half as much allelic variability. A fourth cluster from Central Laos showed even less genetic variability. The use of SSR markers for conservation of teak forest diversity is discussed.

Mots-clés Agrovoc : Tectona grandis, génétique des populations, microsatellite, marqueur génétique, variation génétique, conservation des ressources génétiques

Mots-clés géographiques Agrovoc : Inde, République démocratique populaire lao, Thaïlande, Côte d'Ivoire, Ghana

Mots-clés complémentaires : SSR

Classification Agris : F30 - Génétique et amélioration des plantes
K10 - Production forestière
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Fofana Inza Jésus, Université de Cocody (CIV)
• Ofori Daniel, Forest Research Institute (GHA)
• Poitel Mireille, CIRAD-PERSYST-UPR SCA (FRA)
• Verhaegen Daniel, CIRAD-BIOS-UPR Génétique forestière (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/558601/)

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