Artigo

Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers

The hybrid populations of peach palm (Bactris gasipaes Kunth) have accumulated genetic variability from adjacent landraces, which is expected to increase their variability. To test this hypothesis, 176 plants maintained in the peach palm Germplasm Bank at INPA, including four hybrid populations [Bel...

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Autor principal: Santos, Ronaldo Pereira
Outros Autores: Cristo-Araújo, Michelly de, Picanço-Rodrigues, Doriane, Filho, Spartaco Astolfi, Clement, Charles Roland
Grau: Artigo
Idioma: pt_BR
Publicado em: Revista Brasileira de Fruticultura 2020
Assuntos:
Bactris Gasipaes
Prunus Persica
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/16159
id oai:repositorio:1-16159
recordtype dspace
spelling oai:repositorio:1-16159 Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers Variabilidade genética e fluxo gênico em populações híbridas e silvestres de pupunha acessada com marcadores RAPD Santos, Ronaldo Pereira Cristo-Araújo, Michelly de Picanço-Rodrigues, Doriane Filho, Spartaco Astolfi Clement, Charles Roland Bactris Gasipaes Prunus Persica The hybrid populations of peach palm (Bactris gasipaes Kunth) have accumulated genetic variability from adjacent landraces, which is expected to increase their variability. To test this hypothesis, 176 plants maintained in the peach palm Germplasm Bank at INPA, including four hybrid populations [Belém (n=26); Manaus (n=38); Iquitos, Peru (n=41); Yurimáguas, Peru (n=41)], two wild populations (B. gasipaes variety chichagui) types 1 (n=21) and 3 (n=7), and two samples of a related species, B. riparia, were genotyped with RAPD markers and compared to adjacent landraces reported in other studies. Eight RAPD primers generated 88 polymorphic and 11 monomorphic markers. The replicability test presented a Dice similarity of 0.67, considered acceptable. The average heterozygosity of the hybrid populations was 0.34 and the polymorphism was 87.9%, greater than in the wild populations (0.31; 74.7%). The dendrogram of Dice similarities did not present groups that clearly correspond to the hybrid populations. The gene flow between Iquitos and Yurimáguas (Nm=12.75), and between Iquitos and Manaus (Nm=9.47) was high, while between Belém and Manaus it was lower than expected (Nm=7.72), probably due to the influence of the Solimões landrace near Manaus. The high value of heterozygosity in Manaus seems to be the result of the union of two dispersals after domestication: the western Amazonian dispersal, with Iquitos and Yurimáguas, and the eastern Amazonian, with Belém, joining in Manaus. However, these hybrid populations did not present an accumulation of genetic variability expressive enough to differentiate them from the landraces. 2020-05-25T19:10:49Z 2020-05-25T19:10:49Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/16159 10.1590/S0100-29452011000400019 pt_BR Volume 33, Número 4, Pags. 1200-1208 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Revista Brasileira de Fruticultura
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language pt_BR
topic Bactris Gasipaes
Prunus Persica
spellingShingle Bactris Gasipaes
Prunus Persica
Santos, Ronaldo Pereira
Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers
topic_facet Bactris Gasipaes
Prunus Persica
description The hybrid populations of peach palm (Bactris gasipaes Kunth) have accumulated genetic variability from adjacent landraces, which is expected to increase their variability. To test this hypothesis, 176 plants maintained in the peach palm Germplasm Bank at INPA, including four hybrid populations [Belém (n=26); Manaus (n=38); Iquitos, Peru (n=41); Yurimáguas, Peru (n=41)], two wild populations (B. gasipaes variety chichagui) types 1 (n=21) and 3 (n=7), and two samples of a related species, B. riparia, were genotyped with RAPD markers and compared to adjacent landraces reported in other studies. Eight RAPD primers generated 88 polymorphic and 11 monomorphic markers. The replicability test presented a Dice similarity of 0.67, considered acceptable. The average heterozygosity of the hybrid populations was 0.34 and the polymorphism was 87.9%, greater than in the wild populations (0.31; 74.7%). The dendrogram of Dice similarities did not present groups that clearly correspond to the hybrid populations. The gene flow between Iquitos and Yurimáguas (Nm=12.75), and between Iquitos and Manaus (Nm=9.47) was high, while between Belém and Manaus it was lower than expected (Nm=7.72), probably due to the influence of the Solimões landrace near Manaus. The high value of heterozygosity in Manaus seems to be the result of the union of two dispersals after domestication: the western Amazonian dispersal, with Iquitos and Yurimáguas, and the eastern Amazonian, with Belém, joining in Manaus. However, these hybrid populations did not present an accumulation of genetic variability expressive enough to differentiate them from the landraces.
format Artigo
author Santos, Ronaldo Pereira
author2 Cristo-Araújo, Michelly de
Picanço-Rodrigues, Doriane
Filho, Spartaco Astolfi
Clement, Charles Roland
author2Str Cristo-Araújo, Michelly de
Picanço-Rodrigues, Doriane
Filho, Spartaco Astolfi
Clement, Charles Roland
title Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers
title_short Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers
title_full Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers
title_fullStr Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers
title_full_unstemmed Genetic variability and gene flow in hybrid and wild populations of peach palm accessed with RAPD markers
title_sort genetic variability and gene flow in hybrid and wild populations of peach palm accessed with rapd markers
publisher Revista Brasileira de Fruticultura
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/16159
_version_ 1787141766680412160
score 11.755432

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