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Genetic diversity in populations of Lupinus elegans kunth, implications for ecological restoration Translated title: Diversidad genética de poblaciones de Lupinus elegans kunth, implicaciones para restauración ecológica

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      Abstract

      Lupinus elegans Kunth is a common species in the West-Central region of México. L. elegans has been used for the restoration of degraded conifer forests because it creates microenvironments suitable for the establishment of coniferous species by increasing nitrogen concentrations in the soil. In this study we determined the genetic variation of L. elegans populations using RAPD markers. One hundred and fifty individuals were collected from five populations in Michoacán: Llano de Pario, Charapan, Pico de Tancítaro, San Nicolás and Villa Madero. Results indicate genetic variation (h) about 0.20 with 60 % polymorphism. The molecular analysis showed higher genetic variation within (59 %) than between (41 %) populations. A Neighbor Joining tree was generated based on Nei's genetic distances, and the resulting tree clustered the populations of Llano de Pario and San Nicolás, followed by populations of Tancí taro, and lastly clustered Villa Madero and Charapan. No correlation was found between genetic and geographic distances. Common garden experiments indicate that plants from the local population outperform introduced plants. These results suggest that although L. elegans is a species with a considerable geographic range, seed collection for restoration purposes should be done from the closest (geographical) population possible.

      Translated abstract

      Lupinus elegans Kunth es una especie común de la región Centro-Occidental de México. L. elegans se ha utilizado para la restauración de bosques de coníferas degradados porque crea un microambiente apropiado para el establecimiento de especies de coníferas al aumentar las concentraciones de nitrógeno del suelo. En este estudio se determinó la variación genética de poblaciones de L. elegans mediante marcadores moleculares RAPD. Se colectaron 150 individuos para cinco poblaciones de Michoacán: Llano de Pario, Charapan, Pico de Tancítaro, San Nicolás y Villa Madero. Los resultados indicaron una variación genética (h) alrededor de 0.20 con 60 % de polimorfismos. El análisis molecular mostró que la variación genética dentro de poblaciones (59 %) es mayor que entre poblaciones (41 %). Con las distancias genéticas de Nei se generó un árbol "Neighbor Joining" que agrupa a las poblaciones de Llano de Pario y de San Nicolás, seguidas de las de Tancítaro, y finalmente agruparon las de Villa Madero y Charapan. No se encontró correlación entre las distancias genéticas y geográficas. Plantas provenientes de la población local se desarrollaron mejor que las introducidas en los experimentos de jardín común. Estos resultados sugieren que a pesar del amplio rango de distribución de L. elegans, la colecta de semillas para proyectos de restauración se debe realizar lo más cerca (geográficamente) a la población local posible.

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      Most cited references 52

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        Analysis of gene diversity in subdivided populations.

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        A method is presented by which the gene diversity (heterozygosity) of a subdivided population can be analyzed into its components, i.e., the gene diversities within and between subpopulations. This method is applicable to any population without regard to the number of alleles per locus, the pattern of evolutionary forces such as mutation, selection, and migration, and the reproductive method of the organism used. Measures of the absolute and relative magnitudes of gene differentiation among subpopulations are also proposed.
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            Author and article information

            Affiliations
            [1 ] Universidad Michoacana de San Nicolás de Hidalgo México
            [2 ] Universidad Nacional Autónoma de México México
            Contributors
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Journal
            rfm
            Revista fitotecnia mexicana
            Rev. fitotec. mex
            Sociedad Mexicana de Fitogenética A.C. (Chapingo )
            0187-7380
            June 2009
            : 32
            : 2
            : 79-86
            S0187-73802009000200002

            http://creativecommons.org/licenses/by/4.0/

            Product
            Product Information: SciELO Mexico
            Categories
            Agronomy

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