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| Registros recuperados: 291 | |
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| PONTES,Lígia Cristine Gonçalves; MOURA,Elisa Ferreira; MOURA,Mônika Fecury; RODRIGUES,Simone de Miranda; OLIVEIRA,Maria do Socorro Padilha de; CARVALHO,José Edmar Urano de; THERRIER,Josette. |
| ABSTRACT The bacurizeiro (Platonia insignis Mart.) is a tree native to the Amazon whose fruit is much used in the gastronomy in the North and Northeast regions of Brazil. Due to its great economic potential for these regions, the species is being conserved in germplasm banks to support genetic breeding programs. The aim of this work was the molecular characterization of P. insignis accessions belonging to the germplasm bank of the Embrapa Eastern Amazon research unit using ISSR (Inter Simple Sequence Repeat) markers. Seventy-eight accessions of P. insignis belonging to 16 progenies were sampled in two different localities on Marajó Island, state of Pará, Brazil. Among the 16 progenies, seven were collected in Soure and nine in Salvaterra. The 78 accessions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Germplasm bank; Clusiaceae. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400293 |
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| VARGAS-ARBOLEDA,Andrés; CUADRADO-RÍOS,Sebastian; MANTILLA-MELUK,Hugo. |
| ABSTRACT As a product of recent revisions of the nectivore bat genus Anoura (Glossophaginae: Anourina), new species have been described, and several taxa have been elevated to the specific level in the so-called Anoura caudifer and A. geoffroyi species complexes in the last four decades. The genus has a wide distribution across regions of high ecological complexity, including geographic features, such as the Andes and the Isthmus of Panamá, previously identified as natural barriers that restrict gene flow in other phyllostomid bat genera. Up to date, no analyses have been conducted to investigate the contribution of biogeographic factors on the genetic divergence of the genus. In this work, we analyze barcoding DNA sequences (cytochrome oxidase subunit I,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecuadorian pacific; Gene flow; Genetic diversity; Tailless bat. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000200194 |
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| Fagundes,Bruna Saviatto; Poersch,Maria Augusta; Santos,Jaqueline dos; Gaglioti,André Luiz; Labiak,Paulo Henrique; Muschner,Valeria Cunha. |
| ABSTRACT Dicksonia sellowiana is the only species of the genus occurring in Brazil. Its distribution is restricted to humid areas of the Atlantic Forest biome. The distribution pattern of biodiversity in this biome is known to have been influenced by historical and environmental factors, although the pattern for ferns remains unknown. This study is first to describe the genetic structure of D. sellowiana along the latitudinal gradient of the Atlantic Forest biome. We use microsatellite markers to estimate genetic diversity and structure for 267 individuals representing 14 populations of D. sellowiana from the Atlantic Forest. The results (Ho, He, Fst, Fis, distance genetic) support the hypothesis of a pattern of biodiversity discontinuity. We found greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Neotropics; Gene flow; Genetic diversity; Microsatellites; Tree fern. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400712 |
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| Miranda,Kássia Marques Corrêa; Guimarães,Rejane Araújo; Silva,Marcos José da; Oliveira,Patrícia Rasteiro Ordiale; Ribeiro,Thania Gonçalves; Mendes,Thainara Policarpo; Telles,Mariana Pires de Campos; Soares,Thannya Nascimento. |
| ABSTRACT The genus Manihot Mill. contains about 120 species of which about 104 occur in Brazil. We tested the cross-amplification of ten microsatellite markers developed for Manihot esculenta in 15 species of Manihot endemic to the Brazilian Cerrado. We also evaluated the genetic diversity of Manihot irwinii, M. orbicularis, and M. purpureocostata. Ten pairs of primers were amplified among 14 species of Manihot. The percentage of polymorphic loci per species varied from 70 to 100 %. Nine markers showed amplification and polymorphism when evaluated on polyacrylamide gel. The markers were combined to form three sets for multiplex genotyping for genetic diversity analysis, and showed 51, 75, and 75 alleles in M. irwinii, M. orbicularis, and M.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Polymorphism; SSR; Transferability wild cassava. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400772 |
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| Reichmann,Manuel Castilhos; Zanella,Camila Ângela; Valério Júnior,Cláudio; Borges,Ana Claudia Piovezan; Sausen,Tanise Luisa; Paroul,Natalia; Mielniczki-Pereira,Albanin Aparecida; Teixeira,Amito José; Budke,Jean Carlos; Mossi,Altemir José; Cansian,Rogério Luis. |
| ABSTRACT Understanding the genetic structure and diversity of plants is fundamental to their conservation and permits their sustainable use by local communities. The genus Maytenus (Celastraceae) is composed of plants possessing pharmacological and antioxidant properties. However, the genetic and economic properties of the species M. dasyclada, a typical species of Araucaria forests in Brazil and Uruguay, have been little studied. In this work, the genetic structure and diversity of natural populations of M. dasyclada located in unprotected and preserved forest remnants were investigated using RAPD and isozymes markers. The results demonstrated that in areas of preservation, populations of M. dasyclada possess a relatively high degree of polymorphism and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Forest reserves; Genetic diversity; Maytenus dasyclada; Molecular markers. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100093 |
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| Pati,Prakash G; Datta,Subhojit; Agbagwa,Ikechukwu O; Singh,Indra Prakash; Soren,Khela Ram; Das,Alok; Choudhary,Arbind Kumar; Chaturvedi,Sushil Kumar. |
| Resistance gene analog (RGA)-anchored amplified fragment length polymorphism (AFLP-RGA) marker system was used in order to evaluate genetic relationships among 22 pigeon pea genotypes with varied responses to Fusarium wilt and sterility mosaic disease. Five AFLP-RGA primer combinations (E-CAG/wlrk-S, M-GTG/wlrk-S, M-GTG/wlrk-AS, E-CAT/S1-INV and E-CAG/wlrk-AS) produced 173 scorable fragments, of which 157 (90.7%) were polymorphic, with an average of 31.4 fragments per primer combination. The polymorphism rates obtained with the five primers were 83.3%, 92.0%, 92.3%, 93.0% and 93.1%, respectively. Mean polymorphic information content (PIC) values ranged from 0.24 (with E-CAT/S1-INV) to 0.30 (with E-CAG/wlrk-AS), whereas resolving power (RP) values varied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AFLP-RGA; Cajanus cajan; Genetic diversity; Molecular markers; Polymorphism. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000200007 |
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| Teixeira,Marcelo C.; Turchetto,Caroline; Hartke,Sara; Schnitzler,Carolina K.; Freitas,Loreta B.. |
| ABSTRACT Interspecific hybridization has several consequences for parental species, from blurring species limits to the emergence of new taxa. Petunia axillaris and P. exserta occur in sympatry in southernmost Brazil and naturally hybridize despite their different pollination syndromes and habitat requirements. We employed genetic and morphological analyses to characterize two contact zones between the species with the aim of determining the effect of interspecific hybridization. Microsatellite loci and a morphometric evaluation of the corolla shape were used to classify individuals based on their origin as pure parental or hybrids. Corolla color was used to classify individuals a priori (white, red or intermediate, for P. axillaris, P. exserta or hybrid,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Hybridization; Introgression; Morphometric analysis; Petunia. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400734 |
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| Moura,Tânia Maria de; Sebbenn,Alexandre Magno; Martins,Karina; Moreno,Maria Andreia; Oliveira,Giancarlo Conde Xavier; Chaves,Lázaro José; Kageyama,Paulo Yoshio. |
| This study aimed to compare the genetic diversity of populations of Solanum lycocarpum A.St.-Hil between natural and human disturbed environments, with the assumption that protected areas have greater genetic diversity than disturbed areas. For this study, two populations were sampled in Goiás State, Brazil. One was located in a conservation unit, Serra de Caldas Novas State Park, in the Caldas Novas municipality. The other was located in a pasture area in the municipality of Morrinhos. The two populations are 41 km apart. We sampled 60 individuals from each population, which were genotyped with five microsatellite loci (SSR). The highest number of alleles was recorded in the population of the conservation unit, where we found 11 exclusive and five rare... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Gene flow; Conservation genetics; Genetic diversity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000400023 |
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| Andrade, Elisângela Knoblauch Viega de; Andrade júnior, Valter Carvalho de; Laia, Marcelo Luiz de; Fernandes, José Sebastião Cunha; Oliveira, Altino Junior Mendes; Azevedo, Alcinei Mistico. |
| This study aimed to evaluate the genetic dissimilarity among sweet potato genotypes using morphological and molecular descriptors. The experiment was conducted in the Olericulture Sector at Federal University of Jequitinhonha and Mucuri Valleys (UFVJM) and evaluated 60 sweet potato genotypes. For morphological characterization, 24 descriptors were used. For molecular characterization, 11 microsatellite primers specific for sweet potatoes were used, obtaining 210 polymorphic bands. Morphological and molecular diversity was obtained by dissimilarity matrices based on the coefficient of simple matching and the Jaccard index for morphological and molecular data, respectively. From these matrices, dendrograms were built. There is a large amount of genetic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitotecnia Ipomoea batatas (L.) Lam.; Morphological markers; Microsatellites; Genetic diversity; Germplasm bank. Melhoramento genético de plantas. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32847 |
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| Bezerra, Cíntia Souza; Universidade Federal Rural de Pernambuco; Correia, Kamila Câmara; Universidade Federal Rural de Pernambuco; Câmara, Marcos Paz Saraiva; Universidade Federal Rural de Pernambuco; Sales Junior, Rui; Universidade Federal Rural do Semi-Árido; Armengol, Josep; Instituto Agroforestal Mediterráneo; Michereff, Sami Jorge; Universidade Federal Rural de Pernambuco. |
| The population structure of Monosporascus cannonballus, which causes vine decline in melons, was assessed based on the determination of mycelial compatibility groups (MCGs) in a collection of 58 isolates obtained from seven melon fields in three municipalities of Northeastern Brazil. For comparison, an additional 11 isolates of M. cannonballus from Spain were included in the analysis. MCGs were determined through comparisons of paired isolates growing on PDA culture media in the dark at 30ºC in various combinations. The Brazilian isolates were assigned into four MCGs: MCG-1 (n = 35 isolates), MCG-2 (n = 20), MCG-3 (n = 2), and MGC-4 (n = 1). MCG-1 and MCG-2 included isolates from all surveyed areas. The Spanish isolates were assigned into six different... |
| Tipo: Pesquisa científica |
Palavras-chave: 5.01.02.01-0 Cucumis melo; Melon; Vine decline; Soilborne pathogen; Genetic diversity Fitopatologia Cucumis melo; Melon; Vine decline; Soilborne pathogen; Genetic diversity. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15182 |
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| Góes, Bruna Delgado; Ruas, Eduardo Augusto; Benício, Lucas Milanez; Cassiano, Daniele; Souza, Felipe Pinheiro de; Ruas, Paulo Maurício. |
| Campomanesia xanthocarpa is a native tree, of common occurrence in almost all Brazilian Forest formations, which has its fruits and timber with high commercial value. Using an enriched genomic library we isolated and characterized microsatellite loci for C. xanthocarpa (Myrtaceae), in order to estimate genetic diversity parameters for this and related species. Twenty-eight microsatellite loci were identified and ten of them successfully amplified and showed polymorphism in a sample of 96 individuals, from four natural populations. The number of alleles per locus ranged from two to eight, and the observed and expected heterozygosities varied from 0.042 to 1.000 and from 0.294 to 0.855, respectively. These markers were tested and validated in two related... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas gabiroba; Genetic diversity; Molecular marker; Native tree; Simple sequence repeat (SSR) Desenvolvimento de Marcadores Simple Sequence Repeats. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43454 |
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| Santos, Michele Rocha dos; Universidade Estadual de Maringá; Renesto, Erasmo; Universidade Estadual de Maringá. |
| The genetic variability of Oligosarcus paranensis was estimated from a population collected in São Francisco river, Prudentópolis county in Paraná State (Brazil) using the electrophoresis in starch gel technique. Eleven enzymatic systems were analyzed: Aspartate aminotransaminase (AAT; E. C. 2.6.1), Alcohol dehydrogenase (ADH; E. C. 1.1.1.1), Esterase (EST; E. C. 3.1.1.1), Glucose-6-phosphate isomerase (GPI; E. C. 5.3.1.9), Glycerol-3-Phosphate dehydrogenase (G3PDH; E. C. 1.1.1), Isocitrate dehydrogenase (IDH; E. C. 1.1.1.42), L-lactate dehydrogenase (LDH; E. C. 1.1.1.27), Malate dehydrogenase (MDH; E. C. 1.1.1.37 ), Malate dehydrogenase NADP (ME; E. C. 1.1.1.40), Phosphoglucomutase (PGM; E. C. 5.4.2.2) and Sorbitol dehydrogenase (SORB; E.C. 1.1.1.14).... |
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Palavras-chave: Allozyme; Genetic diversity; Heterozygosity; Polymorphism; Pisces. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14179 |
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| Bandeira, Juliana Magalhães; UFPel; Bianchi, Valmor João; UFPel; Rubin, Sílvia; UFPel; Peters, José Antonio; UFPel; Braga, Eugenia Jacira Bolacel; UFPel. |
| The Plectranthus genus comprises several species generally referred to as boldo, which are highly used in popular medicine due to their anti-dyspeptic, analgesic and digestion-stimulating properties. The amount of natural active principles can vary greatly in the related genotypes, which may lead to the inappropriate use of these plants. This work aimed to analyze the interspecific diversity among four species of the Plectranthus genus (P. grandis, P. barbatus, P. neochilus and P. amboinicus) and the intraspecific diversity of P. barbatus collected from different places in southern Brazil, by means of the RAPD technique. A higher genetic similarity was observed between the P. neochilus and P. amboinicus species (80%), followed by P. grandis and P. barbatus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RAPD; Boldo; Genetic diversity; Medicinal plants Botânica; Genética Vegetal; Genética Molecular e de Microrganismos; Ciências Biológicas. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/880 |
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| Registros recuperados: 291 | |
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