Diversidade genética entre indivíduos de Spondias lutea L. procedentes do baixo são francisco sergipano, por meio de marcadores rapd

Góis, Itamara Bomfim; Ferreira, Robério Anastácio; Silva-Mann, Renata; Blank, Maria de Fátima Arrigoni; Neto, Elísio Marinho Santos

doi:10.1590/s0100-67622014000200006

Cited by 10 publications

(17 citation statements)

References 10 publications

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“…For the restoration of forests, it is important to maintain the genetic diversity found in natural populations to ensure the conservation of new populations inserted in the reforested area (Gois et al, 2014). The success of programs for the recovery of areas depends on the genetic potential of the material used in reforestation (Sebbenn, 2002).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity among Hymenaea courbaril L. genotypes naturally occurring in the north of Mato Grosso State, Brazil

Rocha¹,

Tiago²,

Tiago³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Hymenaea courbaril L. is a tropical tree species with economic and medicinal potential largely used in programs for the recovery of degraded areas. The use of molecular markers in genetic studies can 2 V.D. Rocha et al. Genetics and Molecular Research 16 (3): gmr16039706 help in the definition of forest restoration strategies. This study was conducted to analyze the genetic diversity among H. courbaril ('jatobá') genotypes naturally occurring in the north of Mato Grosso State, Brazil, using ISSR markers, aiming to contribute to the development of seed collection and seedling production strategies. Twenty-four H. courbaril individuals were sampled by collecting leaves for DNA extraction by the CTAB method. The individuals were genotyped using 14 ISSR primers, resulting in the amplification of 87 bands in total, 65 of which were polymorphic. The ISSR markers presented average polymorphism information content of 0.44. Dissimilarity values based on the Jaccard coefficient ranged from 0.12 to 0.52. The most divergent individuals were 3 and 22, whereas 14 and 19 were the most genetically similar. The UPGMA and Tocher clustering methods indicated the formation of four distinct groups, revealing genetic variability among the 24 H. courbaril genotypes. Therefore, all the evaluated genotypes can be used for seed collection and seedling production, but the most divergent individuals should be prioritized.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity among Hymenaea courbaril L. genotypes naturally occurring in the north of Mato Grosso State, Brazil

Rocha¹,

Tiago²,

Tiago³

et al. 2017

Genet. Mol. Res.

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“…The production of seeds of forest species should be based on two basic points: obtaining seeds with sufficient genetic representation of the population from which they were harvested (Gemaque;Davide;Faria, 2002), which is essential when the aim is the reconstruction of natural forests (Gois et al, 2014), and knowledge of the factors that affect the physiological quality of the seeds (Gemaque;Davide;Faria, 2002). Regarding the physiological quality, studies must involve the determination of: the point of collection of fruits and seeds, the most suitable method for its processing, the definition of ideal conditions for germination, and seed storage Cuquel;Panobianco, 2010).…”

Section: Introductionmentioning

confidence: 99%

Maturation and germination of Vernonanthura discolor seeds

et al. 2016

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Vernonanthura discolor is a native species with potential for reclamation of degraded lands, and the manufacture of wood panels. This study has aimed to evaluate the process of maturation and germination of Vernonanthura discolor seeds, determining the harvest time, and conducting the germination test. A periodic monitoring of the reproductive development of sources of Vernonanthura discolor was conducted, located in the municipality of Bocaiúva do Sul, PR, Brazil; and starting from the anthesis, weekly collections of seeds were performed to evaluate the percentage of dry matter, germinating power, and vigor, in order to identify the physiological maturity of the seeds. In the germination test, two combinations of four temperatures (20, 30, 20-30 and 30 °C), and two light regimes were tested, seeking to define the best methodology and evaluation dates of the test. It was concluded that the seeds physiological maturity Vernonanthura discolor reached 45 days after the anthesis, when the maximum values of dry weight, germination and vigor are achieved. Germination test may be conducted on blotting paper at 20 or 25 °C with a supply of light, or at 25 °C in the dark, the first count being on the 13th and the last one on the 29th day after seeding.Index terms: Physiological quality; dry matter; seed harvest. RESUMOVassourão-preto é uma espécie nativa com potencial para a recuperação de áreas degradadas e confecção de painéis de madeira. No trabalho, objetivou-se avaliar o processo de maturação e germinação de sementes de vassourão-preto, definindo o ponto de colheita e a condução do teste de germinação. Realizou-se acompanhamento periódico do desenvolvimento reprodutivo de matrizes de vassourão-preto, localizadas no município de Bocaiúva do Sul, PR, Brasil, sendo que, a partir da antese foram realizadas coletas semanais das sementes, avaliando-se a porcentagem de matéria seca, o poder germinativo e o vigor, a fim de identificar o ponto de maturidade fisiológica das sementes. No teste de germinação, foram testadas combinações de quatro temperaturas (20, 30, 20-30 e 30 °C) e dois regimes de luz, procurando-se definir a melhor metodologia e as datas de avaliação do teste. Conclui-se que a maturidade fisiológica das sementes é atingida, aos 45 dias após a antese, quando os máximos valores de massa seca, poder germinativo e vigor são alcançados; o teste de germinação pode ser conduzido sobre papel mata-borrão, a 20 ou 25 °C com fornecimento de luz, ou a 25 °C no escuro, sendo a primeira contagem aos 13 e a última aos 29 dias após a semeadura.Termos para indexação: Qualidade fisiológica; matéria seca; coleta de sementes.

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“…Studies based on the polymorphism of genetic markers allow investigations on genetic structure and genetic variability but also could be used to estimate gene flow between populations (SHAW; ALLARD, 1981;HAMRICK, 1982). This methodology was used in studies of natural populations of several fruit species, such as Sirigueleira (Spondias lutea L.) by Gois et al (2009) The information generated in studies of genetic structure and genetic diversity provide important parameters that facilitate the definition of conservation strategies, in order to ensure continuity of the evolutionary process of the species through times (RAO; HODGKIM, 2002). The objective of this research was the study and the knowledge of the genetic diversity and structure of six natural populations of H. speciosa var.…”

Section: Introductionmentioning

confidence: 99%

Diversity and genetic structure in natural populations of Hancornia speciosa var. speciosa Gomes in northeastern Brazil

Martins¹,

Martins

Veasey

et al. 2012

Rev. Bras. Frutic.

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-Hancornia speciosa Gomes is a fruit tree native from Brazil that belongs to Apocinaceae family, and is popularly known as Mangabeira. Its fruits are widely consumed raw or processed as fruit jam, juices and ice creams, which have made it a target of intense exploitation. The extractive activities and intense human activity on the environment of natural occurrence of H. speciosa has caused genetic erosion in the species and little is known about the ecology or genetic structure of natural populations. The objective of this research was the evaluation of the genetic diversity and genetic structure of H. speciosa var. speciosa. The genetic variability was assessed using 11 allozyme loci with a sample of 164 individuals distributed in six natural populations located in the States of Pernambuco and Alagoas, Northeastern Brazil. The results showed a high level of genetic diversity within the species (H e = 0.36) seeing that the most of the genetic variability of H. speciosa var. speciosa is within its natural populations with low difference among populations ( q p = 0.081). The inbreeding values within ( f = -0.555) and among populations ( F =-0.428) were low showing lacking of endogamy and a surplus of heterozygotes. The estimated gene flow ( N m ) was high, ranging from 2.20 to 13.18, indicating to be enough to prevent the effects of genetic drift and genetic differentiation among populations. The multivariate analyses indicated that there is a relationship between genetic and geographical distances, which was confirmed by a spatial pattern analysis using Mantel test (r = 0.3598; p = 0.0920) with 1000 random permutations. The high genetic diversity index in these populations indicates potential for in situ genetic conservation. Index terms: Conservation, gene flow, genetic resources, genetic variability, isozyme, mangabeira. DIVERSIDADE E ESTRUTURA GENÉTICA EM POPULAÇÕES NATURAIS DE Hancornia speciosa var. speciosa GOMES NO NORDESTE DO BRASILRESUMO -Hancornia speciosa Gomes é uma árvore frutífera nativa do Brasil, pertencente à família Apocinaceae, e é conhecida popularmente como Mangabeira. Seus frutos são amplamente consumidos in natura ou processados como sucos, sorvetes e geleias. O extrativismo e a intensa atividade antrópica no ambiente de ocorrência natural da Mangabeira, no Nordeste do Brasil, têm causado erosão genética na espécie e pouco se conhece sobre a estrutura genética das populações desta espécie. O objetivo deste trabalho foi avaliar a diversidade e a estrutura genética de populações naturais de H. speciosa var. speciosa. Utilizando 11 locos isoenzimáticos, avaliaram-se 164 indivíduos, amostrados em seis populações naturais localizadas nos Estados de Pernambuco e Alagoas, Nordeste do Brasil. Os resultados mostraram um alto nível de diversidade genética dentro da espécie (H e = 0,36), sendo verificado que a maior parte da variabilidade genética se encontra dentro das populações, com pequena diferenciação entre as mesmas (q p = 0,081). A endogamia dentro das populações ( f = -0,555) e entre...

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Diversidade genética entre indivíduos de Spondias lutea L. procedentes do baixo são francisco sergipano, por meio de marcadores rapd

Cited by 10 publications

References 10 publications

Genetic diversity among Hymenaea courbaril L. genotypes naturally occurring in the north of Mato Grosso State, Brazil

Genetic diversity among Hymenaea courbaril L. genotypes naturally occurring in the north of Mato Grosso State, Brazil

Maturation and germination of Vernonanthura discolor seeds

Diversity and genetic structure in natural populations of Hancornia speciosa var. speciosa Gomes in northeastern Brazil

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