Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1015836
Research center of Embrapa/Collection: Embrapa Acre - Artigo em periódico indexado (ALICE)
Date Issued: 2015
Type of Material: Artigo em periódico indexado (ALICE)
Authors: SUJII, P. S.
MARTINS, K.
WADT, L. H. de O.
AZEVEDO, V. C. R.
SOLFERINI, V. N.
Additional Information: Patricia Sanae Sujii, Unicamp; Karina Martins, Ufscar; LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO; VANIA CRISTINA RENNO AZEVEDO, CENARGEN; Vera Nisaka Solferini, Unicamp.
Title: Genetic structure of Bertholletia excelsa populations from the Amazon at different spatial scales.
Publisher: Conservation Genetics, Dordrecht, v. 16, n. 4, p. 955-964, Aug. 2015.
Language: en
Notes: Published online: 24 March 2015.
Keywords: Marcador microssatélite
Nuez del Brasil
Marcadores genéticos
Madera tropical
Fitomejoramiento
Dinámica poblacional
Repeticiones de microsatélite
Variación genética.
Description: 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.
Thesagro: Melhoramento genético vegetal
Essência florestal
Castanha do pará
Bertholletia excelsa
Variação genética
Dinâmica populacional
Marcador genético
NAL Thesaurus: Plant breeding
Tropical wood
Brazil nuts
Genetic variation
Population dynamics
Genetic markers
Microsatellite repeats.
Data Created: 2015-05-20
Appears in Collections:Artigo em periódico indexado (CPAF-AC)

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