Genetic diversity of Pimenta Longa genotypes (Piper spp., Piperaceae) of the Embrapa Acre germplasm collection
Genet. mol. biol
;
27(1): 74-82, 2004. ilus, mapas, tab
Artículo
en Inglés
| LILACS
| ID: lil-357887
RESUMO
The commonly known Pimenta longa is a commercially valuable natural resource found wild in Acre, Brazil. Specifically, three Piperaceae species with contested taxonomic status were studied, Piper hispidinervum, Piper aduncum, and Piper hispidum, to assesses the inter- and intra-specific genetic relationship of 49 Piper genotypes kept in the Pimenta longa germplasm collection at Embrapa Acre, using sixty six Random Amplified Polymorphic DNA (RAPD) markers. The DNA polymorphism level detected was high (96.97 percent), but the marker frequencies for each species showed polymorphism levels of 79.4 percent for Piper hispidinervum and 5.3 percent for P. aduncum. The genetic similarity clustering analysis resulted in three distinct groups corresponding to Piper hispidinervum, Piper aduncum, and Piper hispidum. Four and nine characteristic RAPD markers were identified for P. hispidinervum and P. aduncum, respectively, supporting the existence of two separate species. However, six genotypes collected in Tarauacá county formed a distinct subgroup within the P. hispidinervum group and may be considered as an ecotype of this species or an intermediate between the P. hispidinervum and P. aduncum groups. More extensive sampling of both P. hispidinervum and P. aduncum populations throughout the region are needed to further establish their relation and its implication for breeding efforts.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Polimorfismo Genético
/
Variación Genética
/
Técnica del ADN Polimorfo Amplificado Aleatorio
/
Piperaceae
Tipo de estudio:
Estudio pronóstico
Idioma:
Inglés
Revista:
Genet. mol. biol
Asunto de la revista:
Genética
Año:
2004
Tipo del documento:
Artículo
País de afiliación:
Brasil
/
Estados Unidos
Institución/País de afiliación:
Embrapa/BR
/
Universidade de São Paulo/BR
/
Yale School of Forestry and Environmental Studies/US
Similares
MEDLINE
...
LILACS
LIS