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| Natura: | Artículo científico |
| Lingua: | en |
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Universidade Federal de Lavras
2011
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=74418601006 |
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| _version_ | 1866568160603275264 |
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| author | Mirian de Sousa Silva |
| author_facet | Mirian de Sousa Silva |
| contents | Diversity and genetic structure in natural populations of Geonoma schottiana Mart (Arecaceae): implications for conservation Mirian de Sousa Silva Fábio de Almeida Vieira Dulcinéia de Carvalho Agrociencias Allozymes genetic conservation spatial genetic structure Geonoma schottiana is an underbrush palm which is found in high densities in tropical forests. This species is known for having an asynchronous fruit producing pattern, over all seasons of the year, thus being an important food source for frugivores. This work aims to determine the diversity and spatial genetic structure of two natural populations, referred to as MC I and MC II, of which 60 individuals were sampled, in Poço Bonito Biological Reserve, Lavras, Minas Gerais state. Results of 10 polymorphic isozyme loci indicated a high genetic diversity for the species (¿e = 0.428 and ¿o = 0.570), with an mean number of alleles per locus of 2.0. Estimates of Cockerham¿s coancestry coeffi cients indicated an absence of intrapopulation (f ¿ = -0.343) and interpopulation inbreeding (F¿ = -0.161), suggesting that on average populations are not endogamous. A high genetic divergence was found between populations (¿¿p = 13.5%), in comparison to most tropical species (<5%). Consequently, the estimated historical gene fl ow was low ( m N¿ = 0.40). The analysis of spatial distribution of G. schottiana genotypes in MCI revealed a random distribution of genotypes. The high genetic diversity indices found suggest that the populations in question favor in situ genetic conservation, consequently favoring the conservation of riparian environments. 2011 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74418601006 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.2 Vol.17 |
| format | Artículo científico |
| id | redalyc_74418601006 |
| language | en |
| publishDate | 2011 |
| publisher | Universidade Federal de Lavras |
| spellingShingle | Diversity and genetic structure in natural populations of Geonoma schottiana Mart (Arecaceae): implications for conservation Mirian de Sousa Silva Agrociencias Allozymes genetic conservation spatial genetic structure Diversity and genetic structure in natural populations of Geonoma schottiana Mart (Arecaceae): implications for conservation Mirian de Sousa Silva Fábio de Almeida Vieira Dulcinéia de Carvalho Agrociencias Allozymes genetic conservation spatial genetic structure Geonoma schottiana is an underbrush palm which is found in high densities in tropical forests. This species is known for having an asynchronous fruit producing pattern, over all seasons of the year, thus being an important food source for frugivores. This work aims to determine the diversity and spatial genetic structure of two natural populations, referred to as MC I and MC II, of which 60 individuals were sampled, in Poço Bonito Biological Reserve, Lavras, Minas Gerais state. Results of 10 polymorphic isozyme loci indicated a high genetic diversity for the species (¿e = 0.428 and ¿o = 0.570), with an mean number of alleles per locus of 2.0. Estimates of Cockerham¿s coancestry coeffi cients indicated an absence of intrapopulation (f ¿ = -0.343) and interpopulation inbreeding (F¿ = -0.161), suggesting that on average populations are not endogamous. A high genetic divergence was found between populations (¿¿p = 13.5%), in comparison to most tropical species (<5%). Consequently, the estimated historical gene fl ow was low ( m N¿ = 0.40). The analysis of spatial distribution of G. schottiana genotypes in MCI revealed a random distribution of genotypes. The high genetic diversity indices found suggest that the populations in question favor in situ genetic conservation, consequently favoring the conservation of riparian environments. 2011 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74418601006 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.2 Vol.17 |
| title | Diversity and genetic structure in natural populations of Geonoma schottiana Mart (Arecaceae): implications for conservation |
| topic | Agrociencias Allozymes genetic conservation spatial genetic structure |
| url | https://www.redalyc.org/articulo.oa?id=74418601006 |