Selecting populations for gene conservation purposes in forestry: a study case with Alnus acuminata in Costa Rica and Panama

  • O. Murillo Instituto Tecnológico de Costa Rica. Escuela de Ingeniería Forestal.
Keywords: gene conservation, conservation genetics, population genetics, Alnus acuminata, Costa Rica, Panama, isozymes

Abstract

In forest gene conservation programs there is a continuous discussion on criteria for population elections. Before actions are initiated, it is necessary to define what is a gene resource and which of the particular populations (entries) deserve highest priority. Most gene conservation programs are oriented to 1) yield potential: genetic potential for expressions of desirable phenotypic characters; (2) genetic adaptability: the ability of populations to survive and reproduce even in a changed environment; (3) conservation of as much variation as possible. This work presents the study case of Alnus acuminata in Costa Rica and Panama and an extensive discussion on different criteria for population selection. Variables evenness deviation, proposed in this study {ed = Σpi – p-/[2(n – 1)/n]} and genetic diversity [v = ( p2i )-1], both as culling levels, showed the best criteria for populations selection. At least there was found one good candidate population in each of the three most important geographical region (breeding region), suitable for gene conservation purposes: Vara Blanca (Region Poás II), San Gerardo (Region Talamanca) and Boquete (Region Panama). Possibilities of in situ gene conservation in natural protected areas are also discussed.

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Published
2005-04-01
How to Cite
Murillo, O. (2005). Selecting populations for gene conservation purposes in forestry: a study case with Alnus acuminata in Costa Rica and Panama. Forest Systems, 14(1), 27-35. https://doi.org/10.5424/srf/2005141-00871
Section
Research Articles