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Note
Issue
Ann. For. Sci.
Volume 61, Number 6, September 2004
Page(s) 603 - 606
DOI http://dx.doi.org/10.1051/forest:2004056
Ann. For. Sci. 61 (2004) 603-606
DOI: 10.1051/forest:2004056

Note

Molecular markers provide evidence for long-distance planting material transfer during plantation establishment of Dalbergia sissoo Roxb. in Nepal

Madhav Pandey, Oliver Gailing, Ludger Leinemann and Reiner Finkeldey

Institute of Forest Genetics and Forest Tree Breeding, Georg-August-University Goettingen, Buesgenweg 2, 37077 Goettingen, Germany

(Received 16 May 2003; accepted 6 November 2003)

Abstract - We investigated five population pairs of Dalbergia sissoo in Nepal for variation of cpDNA and at the isozyme gene locus Gdh-A. Each population pair consisted of one natural population and a neighboring plantation. Two or three different cpDNA-haplotypes were observed in each population with a total of eight different haplotypes. The differentiation of cpDNA haplotypes between the group of natural populations and the group of plantations was almost complete. Thus, the plantations did not originate from any of the investigated natural populations, but reproductive material was transported over long distances during plantation establishment. All plantations proved to be fixed at the Gdh-A gene locus, which showed considerable polymorphism in natural populations indicating different adaptive potentials of plantations and natural stands.


Résumé - Mise en évidence de transferts à longue distance de matériel de reproduction utilisé pour des plantations de Dalbergia sissoo Roxb. au Népal par l'utilisation de marqueurs moléculaires. On a étudié la variabilité d'ADNcp et de l'isozyme du locus Gdh-A dans cinq paires de populations de Dalbergia sissoo situées au Népal. Chaque paire comportait une population naturelle et une plantation située à proximité ; on a observé l'existence de deux ou trois ADNcp haplotypes dans chaque population avec, au total, huit haplotypes différents. La différenciation pour les ADNcp haplotypes entre le groupe des populations naturelles et celui des plantations était presque générale. Il en résulte que les plantations ne sont pas issues des populations naturelles étudiées ; le matériel de reproduction a été transporté sur de longues distances au cours des opérations de plantation. Aucune variation du niveau du locus du gène Gdh-A n'a été trouvée pour toutes les plantations, alors qu'il existe un polymorphisme considérable dans les populations naturelles. Il en résulte un potentiel d'adaptation différent entre plantations et peuplements naturels.


Key words: cpDNA haplotpyes / isozymes / tropical tree / seed transfer / adaptive potential

Mots clés : haplotypes ADNcp / isozymes / arbre tropical / transfert de graine / potentiel d'adaptation

Corresponding author: Madhav Pandey mpandey@gwdg.de

© INRA, EDP Sciences 2004

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