Diversidade genética e tamanho efetivo de duas populações de Myracrodruon urundeuva Fr. All., sob conservação ex situ

Viegas, Michele Perez; Silva, Cristina Lacerda Soares Petrarolha; Moreira, Juliana Prado; Cardin, Laila Toniol; Azevedo, Vânia Cristina Rennó; Ciampi, A. Y.; Freitas, Miguel Luiz Menezes; Moraes, Mário Luiz Teixeira de; Sebbenn, Alexandre Magno

doi:10.1590/s0100-67622011000500002

Cited by 16 publications

(13 citation statements)

References 27 publications

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“…Ao estudar populações naturais de Myracrodruon urundeuva Fr. All., localizadas em Aramina, SP, e Selvíria, MS, Viegas et al (2011) detectaram alta diferenciação genética entre as duas populações, tanto a partir do pólen quanto dos óvulos (15,9% e 23,5%, respectivamente), e atribuiu esses resultados à grande distância que separa as populações, somada à deriva genética que cada uma experimenta.…”

Section: Discussionunclassified

Indicadores de sustentabilidade para conservação genética de Erythrina velutina Willd., em área de mata ciliar

2014

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RESUMO -Um dos grandes desafios para o sistema agropecuário é estabelecer a produção agrícola aliada à conservação dos recursos genéticos, principalmente visando à proteção de Áreas de Preservação Permanente. Nesse contexto, mulungu (Erythrina velutina Willd), entre outras espécies nativas, vem sofrendo com as pressões antrópicas nos mais diversos ecossistemas, o que causa reduções em sua base genética. Este trabalho foi realizado com o objetivo de utilizar parâmetros ecológicos e genéticos populacionais como indicadores de sustentabilidade em duas populações naturais de mulungu, situadas em áreas de floresta ciliar, no Estado de Sergipe, bem como avaliar a tendência à sustentabilidade delas, visando à conservação genética da espécie. Utilizou-se a matriz de Pressão-Estado-Impacto/Efeito-Resposta (PEI/ER) com a seleção de 13 indicadores, a partir do uso de marcadores moleculares RAPD e bioquímicos (enzimas) nas populações, de modo a apresentá-los como informações relevantes para medir o progresso quanto à sustentabilidade e conservação de mulungu. As populações estudadas apresentaram baixa tendência à sustentabilidade, necessitando de estratégias para mudança desse status.Palavras-chave: Mulungu; Espécie nativa; Genética de populações. INDICATORS OF SUSTAINABILITY FOR GENETIC CONSERVATION OF Erythrinavelutina Willd., IN RIPARIAN FOREST AREA ABSTRACT -One of the greatest challenges for the agricultural system is to establish agricultural production combined with the conservation of genetic resources, mainly aiming to protect the Permanent Preservation

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Section: Discussionunclassified

Indicadores de sustentabilidade para conservação genética de Erythrina velutina Willd., em área de mata ciliar

2014

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“…The teak genotypes, divided into two groups, showed moderate levels of genetic diversity ( A =3.8 -4.3 and H e = 0.37 -0.61), lower than the literature data for teak ( A = 2.1 -7.7 and H e = 0.28 -0.78) (FOFANA et al, 2009), ( A = 3.0 -5.9 and H e = 0.49 -0.70) , or when compared to other tree species as Eucalyptus globulus ( A = 8.2 -9.7, and H e = 0.77 -0.83) (MIMURA et al, 2009), Myracrodruon urundeuva ( A = 13.1 -13.8, and H e = 0.68 -0.75) (VIEGAS et al, 2011) and Carapa guianensis ( A = 5.1 -5.7, and H e = 0.57 -0.58) (RAPOSO et al, 2007), although higher when compared to other outcrossing trees, such as Vitellaria paradoxa ( A = 3.8 -4.2, and H e = 0.38 -0.44) (KELLY et al, 2004) and Grevillea macleayana ( A = 3.2 -4.2, and H e = 0.42 -0.53) (ENGLAND et al, 2002). The latter is a self-compatible species, whose mating system can vary among populations from random outcrossing to almost complete selfing (WHELAN et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of teak (Tectona grandis L.F.) from different provenances using microsatellite markers

Alcântara

Veasey

2013

Rev. Árvore

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-Teak (Tectona grandis) is one of the main timber species in the world with high economic value, famous for its beauty, strength and durability. The objective of this work was to characterize the genetic diversity of teak genotypes used in Brazilian plantations. Nine microsatellite primers were used to assess 60 teak genotypes, including 33 genotypes from seeds of plantations and 14 clones from Cáceres municipality, Mato Grosso State, Brazil, and 13 clones from Honduras, Malaysia, India, Indonesia, Ivory Coast and Solomon Islands. Two groups of genotypes were detected using the Bayesian Structure analysis: 80% were placed in group 1, represented by genotypes from Cáceres and one from Malaysia, and 20% allocated in group 2, composed of clones from India, Solomon Islands, Malaysia and Honduras and the clones from the Ivory Coast. Most of the genetic variability (73%) was concentrated within groups according to AMOVA analysis. Genetic parameters were estimated for the two groups obtained in the analysis of Structure. Moderate genetic diversity was found, with 4.1 alleles per locus, on average, and an average heterozygosity of 0.329, which was lower than the expected heterozygosity (H e = 0.492). Group 1 showed the lowest values for these parameters. Suggestions were made concerning the identification of contrasting genotypes to be used as parents in breeding programs.Keywords: Genetic characterization; Germplasm; Molecular markers. DIVERSIDADE GENÉTICA DE TECA (Tectona grandis L.F.) DE DIFERENTES PROCEDÊNCIAS USANDO MARCADORES MICROSSATÉLITES

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“…ISSRs are useful in detecting polymorphism because they have low cost, are abundant in the genome and easily repeatable between laboratories, therefore being frequently used in population genetics studies (ADHIKARI et al, 2017). Among the factors that can influence population genetic diversity are recent anthropic action, the population size, the population isolation, gene flow, reproductive system and environmental events (VIEGAS et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of long-established populations of Elaeis guineensis jacquin (Arecaceae)

et al. 2019

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This study aimed to estimate the genetic diversity of three Elaeis guineensis populations in Rio Grande do Norte state, as well as to verify the decreases in effective population size. The population with the highest polymorphism was MAT (Mata) with+ 57 loci (72%), followed by RIA (Riacho) with 54 loci (68%) and HOR (Horta) with 34 loci (43.03%). The RIA population was shown to be the most genetically diverse, with Nei (h = 0.28) and Shannon (I = 0.41) diversity indices. There was high genetic differentiation among populations (AMOVA, analysis of molecular variance = 42%), which was separated into three distinct genetic groups according to a Bayesian analysis. There was a significant population decrease (P < 0.05) for the HOR population in the IAM (infinite allele model) and SMM (stepwise mutation model), and for the RIA population in the IAM. The data obtained in this study may support ex-situ conservation projects for Elaeis guineensis, contributing to the selection of genotypes and their sustainable use.

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Diversidade genética e tamanho efetivo de duas populações de Myracrodruon urundeuva Fr. All., sob conservação ex situ

Cited by 16 publications

References 27 publications

Indicadores de sustentabilidade para conservação genética de Erythrina velutina Willd., em área de mata ciliar

Indicadores de sustentabilidade para conservação genética de Erythrina velutina Willd., em área de mata ciliar

Genetic diversity of teak (Tectona grandis L.F.) from different provenances using microsatellite markers

Genetic diversity of long-established populations of Elaeis guineensis jacquin (Arecaceae)

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