Data/hora: 02/06/2024 17:38:11

Biblioteca(s): | Embrapa Acre; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia.
Data corrente: | 20/05/2015
Data da última atualização: | 16/03/2023
Autoria: | SUJII, P. S.; MARTINS, K.; WADT, L. H. de O.; AZEVEDO, V. C. R.; SOLFERINI, V. N.
Afiliação: | Patricia Sanae Sujii, Unicamp; Karina Martins, Ufscar; LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO; VANIA CRISTINA RENNO AZEVEDO, CENARGEN; Vera Nisaka Solferini, Unicamp.
Título: | Genetic structure of Bertholletia excelsa populations from the Amazon at different spatial scales.
Ano de publicação: | 2015
Fonte/Imprenta: | Conservation Genetics, v. 16, n. 4, p. 955-964, 2015.
DOI: | 10.1007/s10592-015-0714-4

Idioma:

Inglês
Português

Conteúdo: | Population genetic structure and genetic diversity levels are important issues to understand population dynamics and to guide forest management plans. The Brazil nut tree (Bertholletia excelsa Bonpl.) is an endemic species, widely distributed through Amazonian upland forests and also an important species for the local extractive economy. Our aim was to analyze the genetic structure of Brazil nut trees at both fine and large scales throughout the Amazon Basin, contributing to the knowledge base on this species and to generate information to support plans for its conservation. We genotyped individuals from nine sites distributed in five regions of the Brazilian Amazon using 11 microsatellite loci. We found an excess of heterozygotes in most populations, with significant negative inbreeding coefficients (f) for five of them and the finescale structure, when present, was very small. These results, as a consequence of self-incompatibility, indicate that conservation plans for B. excelsa must include the maintenance of genetic diversity within populations to ensure viable amounts of seeds for both economic purposes and for the local persistence of the species.
Palavras-Chave: | Brazil nut tree; Castanha-do-brasil; Dinámica poblacional; Diversidade genética; Estrutura genética; Fitomejoramiento; Genetic diversity; Madera tropical; Manejo florestal; Marcador microssatélite; Marcadores genéticos; Nuez del Brasil; Repeticiones de microsatélite; SSR; Variación genética.
Thesagro: | Bertholletia Excelsa; Castanha do pará; Dinâmica populacional; Essência florestal; Marcador genético; Melhoramento genético vegetal; Variação genética.
Thesaurus Nal: | Brazil nuts; gene flow; Genetic markers; Genetic variation; Microsatellite repeats; Plant breeding; plant genetics; Population dynamics; Tropical wood.

Categoria do assunto:

--
G Melhoramento Genético

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/160957/1/25488-publicado.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/124199/1/25488.pdf

Registro original: | Embrapa Recursos Genéticos e Biotecnologia (CENARGEN)

Exemplares:

CPAF-AC - (25488-1) - UPC - AP - DD -  -  -  - DIS
CENARGEN - (35939-1) - UPC - AP - DD - SP 20726 -  - SP 20726 - DIS
CPAF-RO - (17520-1) - UPC - AP - DD -  -  -  - DIS