Genetic structure and mating system of Piper hispidinervum

Detalhes bibliográficos
Autor(a) principal: Wadt, Lúcia Helena de Oliveira
Data de Publicação: 2004
Outros Autores: Kageyama, Paulo Yoshio
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6750
Resumo: Long pepper (Piper hispidinervum C. DC.) is a small tree with high commercial value found in areas under anthropic influence in the State of Acre, Brazil. The genetic structure and mating system of P. hispidinervum were evaluated using RAPD markers. The genetic diversity within and between natural populations were evaluated in 13 populations in the Basin Acre River - Western Brazilian Amazon. Twenty five open-pollinating families in a population located in Assis Brasil were evaluated to estimate the preferential crossing rate. Genetic diversity was observed, revealing that this species is spatially structured according to a pattern of isolation by distance. Most of the genetic variability was found within populations, and the variation between populations was also high (θP = 0.28). Two distinct groups were formed, based on genetic distances (φST), representing the Upper Acre and Lower Acre watersheds. By AMOVA, 20.61% of the total variability occurs between those two watershed regions. The multilocus crossing rate was estimated at 1.033, the estimate of the inbreeding coefficient (F) did not vary from zero, and the crosses preferentially occurred between unrelated individuals.
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spelling Genetic structure and mating system of Piper hispidinervumEstrutura genética e sistema de acasalamento de Piper hispidinervumpepper; RAPD; genetic variation; crossbreedingpimenta; RAPD; variação genética; cruzamentoLong pepper (Piper hispidinervum C. DC.) is a small tree with high commercial value found in areas under anthropic influence in the State of Acre, Brazil. The genetic structure and mating system of P. hispidinervum were evaluated using RAPD markers. The genetic diversity within and between natural populations were evaluated in 13 populations in the Basin Acre River - Western Brazilian Amazon. Twenty five open-pollinating families in a population located in Assis Brasil were evaluated to estimate the preferential crossing rate. Genetic diversity was observed, revealing that this species is spatially structured according to a pattern of isolation by distance. Most of the genetic variability was found within populations, and the variation between populations was also high (θP = 0.28). Two distinct groups were formed, based on genetic distances (φST), representing the Upper Acre and Lower Acre watersheds. By AMOVA, 20.61% of the total variability occurs between those two watershed regions. The multilocus crossing rate was estimated at 1.033, the estimate of the inbreeding coefficient (F) did not vary from zero, and the crosses preferentially occurred between unrelated individuals.A pimenta-longa (Piper hispidinervum C. DC.) arbusto encontrado em áreas antropizadas no Estado do Acre, possui expressiva importância econômica decorrente da presença de safrol em seu óleo essencial. O objetivo deste trabalho foi avaliar a estrutura genética e o sistema de acasalamento dessa espécie, utilizando marcadores RAPD (polimorfismo de DNA amplificado ao acaso). A diversidade genética entre e dentro de populações naturais foi avaliada em 13 populações do Vale do Rio Acre, distribuídas nas Regiões do Baixo e Alto Acre. A taxa preferencial de cruzamento foi estimada em 25 famílias de polinização livre de uma população do Município de Assis Brasil, Acre. A espécie apresentou diversidade genética estruturada no espaço segundo um padrão de isolamento por distância. A maior parte da variabilidade genética foi encontrada dentro das populações, porém a diferenciação entre populações, como um todo, foi alta (θP = 0,28). O agrupamento das populações, pela distância genética (φST) entre elas, mostrou dois grupos distintos, os quais representam as regiões do Alto Acre e Baixo Acre. A AMOVA mostrou que 20,61% da variabilidade total está entre essas duas regiões. A taxa de cruzamento multilocos foi estimada em 1,033, evidenciando que a espécie é alógama. A estimativa do coeficiente de endogamia F não diferiu de zero e os cruzamentos ocorreram preferencialmente entre indivíduos não-aparentados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraWadt, Lúcia Helena de OliveiraKageyama, Paulo Yoshio2004-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6750Pesquisa Agropecuaria Brasileira; v.39, n.2, fev. 2004; 151-157Pesquisa Agropecuária Brasileira; v.39, n.2, fev. 2004; 151-1571678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6750/3806info:eu-repo/semantics/openAccess2014-07-03T17:57:39Zoai:ojs.seer.sct.embrapa.br:article/6750Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-07-03T17:57:39Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Genetic structure and mating system of Piper hispidinervum
Estrutura genética e sistema de acasalamento de Piper hispidinervum
title Genetic structure and mating system of Piper hispidinervum
spellingShingle Genetic structure and mating system of Piper hispidinervum
Wadt, Lúcia Helena de Oliveira
pepper; RAPD; genetic variation; crossbreeding
pimenta; RAPD; variação genética; cruzamento
title_short Genetic structure and mating system of Piper hispidinervum
title_full Genetic structure and mating system of Piper hispidinervum
title_fullStr Genetic structure and mating system of Piper hispidinervum
title_full_unstemmed Genetic structure and mating system of Piper hispidinervum
title_sort Genetic structure and mating system of Piper hispidinervum
author Wadt, Lúcia Helena de Oliveira
author_facet Wadt, Lúcia Helena de Oliveira
Kageyama, Paulo Yoshio
author_role author
author2 Kageyama, Paulo Yoshio
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Wadt, Lúcia Helena de Oliveira
Kageyama, Paulo Yoshio
dc.subject.por.fl_str_mv pepper; RAPD; genetic variation; crossbreeding
pimenta; RAPD; variação genética; cruzamento
topic pepper; RAPD; genetic variation; crossbreeding
pimenta; RAPD; variação genética; cruzamento
description Long pepper (Piper hispidinervum C. DC.) is a small tree with high commercial value found in areas under anthropic influence in the State of Acre, Brazil. The genetic structure and mating system of P. hispidinervum were evaluated using RAPD markers. The genetic diversity within and between natural populations were evaluated in 13 populations in the Basin Acre River - Western Brazilian Amazon. Twenty five open-pollinating families in a population located in Assis Brasil were evaluated to estimate the preferential crossing rate. Genetic diversity was observed, revealing that this species is spatially structured according to a pattern of isolation by distance. Most of the genetic variability was found within populations, and the variation between populations was also high (θP = 0.28). Two distinct groups were formed, based on genetic distances (φST), representing the Upper Acre and Lower Acre watersheds. By AMOVA, 20.61% of the total variability occurs between those two watershed regions. The multilocus crossing rate was estimated at 1.033, the estimate of the inbreeding coefficient (F) did not vary from zero, and the crosses preferentially occurred between unrelated individuals.
publishDate 2004
dc.date.none.fl_str_mv 2004-02-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6750
url https://seer.sct.embrapa.br/index.php/pab/article/view/6750
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6750/3806
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.39, n.2, fev. 2004; 151-157
Pesquisa Agropecuária Brasileira; v.39, n.2, fev. 2004; 151-157
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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