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

Fofana I.J., Ofori D., Poitel M., Verhaegen D.. 2009. New Forests, 37 (2) : p. 175-195.

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. (Résumé d'auteur)

Mots-clés : conservation des ressources génétiques; variation génétique; marqueur génétique; microsatellite; génétique des populations; tectona grandis; ghana; côte d'ivoire; thaïlande; république démocratique populaire lao; inde; ssr

Thématique : Génétique et amélioration des plantes; Production forestière; Méthodes de relevé

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