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	Provedor de dados Infoteca-e (45) Genet. Mol. Biol. (8) Open Agri (7) PAB (7) Thai Agricultural (4) Colegio de Postgraduados (4) OceanDocs (3) ArchiMer (3) BJID (3) BJMBR (3) BJM (3) Electron. J. Biotechnol. (3) Rev. Ciênc. Agron. (2) PFB - Pesquisa Florestal Brasileira (2) Ecology and Society (2) Neotropical Ichthyology (2) Agronomy (1) CIGR Journal (1) Agricultura Técnica (1) Ciencia e Investigación Agraria (1) Mais... Autor FALEIRO, F. G. (26) BELLON, G. (16) KARIA, C. T. (10) ANDRADE, R. P. (8) JUNQUEIRA, N. T. V. (8) JUNQUEIRA, K. P. (7) FIALHO, J. de F. (6) RAMOS, A. K. B. (6) VIEIRA, E. A. (6) BARROS, A. M. (5) BRAGA, M. F. (5) FERNANDES, F. D. (4) FUKUDA, W. M. G. (4) PEIXOTO, J. R. (4) ANDRADE, R. P. de (3) MARTHA JÚNIOR, G. B. (3) MORETZSOHN, M. de C. (3) OLIVEIRA, M. N. de (3) PAULA, M. da S. (3) PEREIRA, A. V. (3) Mais... Palavra-chave Genetic variation (116) Variação Genética (39) Genetic markers (25) Marcador Molecular (24) Plant breeding (22) Melhoramento Genético Vegetal (18) Biotechnology (16) RAPD (16) Biotecnologia (14) Marcador Genético (12) Feed legumes (9) Leguminosa Forrageira (9) Variación genética (9) Germplasm (8) Cassava (5) Cerrado (5) Mandioca (5) Maracujá (5) Millets (5) Passiflora Edulis (5) Mais... Tipo do documento Info:eu-repo/semantics/article (38) Folders (27) Folhetos (17) Journal article (7) Journal Contribution (3) Text (3) Peer-Reviewed Reports (2) Tesis (2) Article / Letter to the editor (1) Collection (1) Info:eu-repo/semantics/other (1) Livros (1) PhysicalObject (1) Working or Discussion Paper (1) Mais... Ano 2020 (2) 2018 (2) 2017 (4) 2016 (4) 2015 (1) 2014 (3) 2013 (3) 2012 (5) 2011 (6) 2010 (4) 2009 (5) 2008 (3) 2007 (5) 2006 (15) 2005 (15) 2004 (9) 2003 (6) 2002 (3) 2001 (5) 2000 (4) Mais... País Brazil (81) Chile (7) India (7) Mexico (4) Thailand (4) Belgium (3) France (3) Argentina (2) Canada (2) China (1) Netherlands (1) United States (1) Mais... Idioma Inglês (55) Português (45) Espanhol (5) Thailandês (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 116 Primeira ... 1 2 3 4 5 6 ... Última Assessing Extinction Risk: Integrating Genetic Information Ecology and Society Dunham, Jason; University of Nevada-Reno; jdunham@proaxis.com; Peacock, Mary; University of Nevada-Reno; mpeacock@scs.unr.edu; Tracy, C. Richard; University of Nevada-Reno; dtracy@unr.edu; Nielsen, Jennifer; Stanford University; jnielsen@leland.stanford.edu; Vinyard, Gary; University of Nevada-Reno; gvinyard@med.unr.edu. Risks of population extinction have been estimated using a variety of methods incorporating information from different spatial and temporal scales. We briefly consider how several broad classes of extinction risk assessments, including population viability analysis, incidence functions, and ranking methods integrate information on different temporal and spatial scales. In many circumstances, data from surveys of neutral genetic variability within, and among, populations can provide information useful for assessing extinction risk. Patterns of genetic variability resulting from past and present ecological and demographic events, can indicate risks of extinction that are otherwise difficult to infer from ecological and demographic analyses alone. We provide... Tipo: Peer-Reviewed Reports Palavras-chave: Extinction risk; Genetic variation; Incidence function analysis; Population viability analysis; Ranking methods; Risk assessment; Spatial scale; Temporal scale.. Ano: 1999 &#321;egha&#769;gots'enete&#808; (learning together): the importance of indigenous perspectives in the identification of biological variation Ecology and Society Polfus, Jean L.; Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba, Canada; jeanpolfus@gmail.com; Manseau, Micheline; Office of the Chief Ecosystem Scientist, Parks Canada, Gatineau, Qu&#233;bec, Canada; Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba, Canada; Micheline.Manseau@pc.gc.ca; Bayha, Walter; De&#769;l&#305;&#808;ne&#808; Land Corporation, De&#769;l&#305;&#808;ne&#808;, Northwest Territories, Canada; nihtla321@gmail.com; Rice, Keren; Department of Linguistics, University of Toronto, Toronto, Ontario, Canada; rice@chass.utoronto.ca; Wilson, Paul; Biology Department, Trent University, Peterborough, Ontario, Canada; pawilson@trentu.ca. Tipo: Peer-Reviewed Reports Palavras-chave: Aboriginal; Biocultural diversity; Biodiversity; Caribou; Collaborative research; Ecology; First Nation; Genetic variation; Indigenous communities; Population genetics; Population structure; Rangifer tarandus; Resource management; Social-ecological systems; Traditional knowledge. Ano: 2016 Use of AFLP markers to estimate molecular diversity of Phakopsora pachyrhizi Electron. J. Biotechnol. Lourdes Rocha,Carla Maria; Vellicce,Gabriel Ricardo; García,María Gabriela; Pardo,Esteban Mariano; Racedo,Josefina; Perera,María Francisca; de Lucía,Adrian; Gilli,Javier; Bogado,Noelia; Bonnecarrère,Victoria; German,Silvia; Marcelino,Francismar; Ledesma,Fernando; Reznikov,Sebastián; Ploper,Leonardo Daniel; Welin,Bjorn; Castagnaro,Atilio Pedro. Background Asian soybean rust (SBR) caused by Phakopsora pachyrhizi Syd. &amp; Syd., is one of the main diseases affecting soybean and has been reported as one of the most economically important fungal pathogens worldwide. Knowledge of the genetic diversity of this fungus should be considered when developing resistance breeding strategies. We aimed to analyze the genetic diversity of P. pachyrhizi combining simple sampling with a powerful and reproducible molecular technique. Results We employed Amplified Fragment Length Polymorphism (AFLP) technique for the amplification of P. pachyrhizi DNA extracted from naturally SBR-infected plants from 23 production fields. From a total of 1919 markers obtained, 77% were polymorphic. The high percentage of... Tipo: Journal article Palavras-chave: Asian soybean rust; Genetic variation; Glycine max; Molecular markers. Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600009 Phylogenetic relationships among species of the subsection Dendrophlomis Bentham Electron. J. Biotechnol. Yuzbasioglu,Ertugrul; Dadandi,Mehmet Yasar. This study used randomly amplified polymorphic DNA markers to determine genetic relationships among species of the subsection Dendrophlomis. Twenty accessions of the eleven Phlomis taxa were evaluated to determine genetic variability using fourteen ten mer primers selected from a 125 random oligonucleotide set. These 14 selected primers generated 85 RAPD bands that ranged in size from 200 to 1200 base pairs. Of the total bands, 88% (75) were polymorphic among the samples. Genetic distances among accessions were computed to produce a dendrogram based on UPGMA. Genetic distances ranged from 0.133 (between P. amanica and P. monocephala) to 0.494 (between P. chimerae and P. lunariifolia). The UPGMA tree based on distances has two major groups. The first... Tipo: Journal article Palavras-chave: Genetic diversity; Genetic relationships; Genetic variation; Phlomis species; RAPDs. Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000400012 SSR genetic diversity assessment of popular pigeonpea varieties in Malawi reveals unique fingerprints Electron. J. Biotechnol. Njung'e,Vincent; Deshpande,Santosh; Siambi,Moses; Jones,Richard; Silim,Said; De Villiers,Santie. Background: Pigeonpea (Cajanus cajan (L.) Millsp.) is a drought tolerant legume of the Fabaceae family and the only cultivated species in the genus Cajanus. It is mainly cultivated in the semi-arid tropics of Asia and Oceania, Africa and America. In Malawi, it is grown as a source of food and income and for soil improvement in intercropping systems. However, varietal contamination due to natural outcrossing causes significant quality reduction and yield losses. In this study, 48 polymorphic SSR markers were used to assess the diversity among all pigeonpea varieties cultivated in Malawi to determine if a genetic fingerprint could be identified to distinguish the popular varieties. Results: A total of 212 alleles were observed with an average of 5.58 alleles... Tipo: Journal article Palavras-chave: Genetic variation; Genotyping; Microsatellites; Seed purity. Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000300008 Genetic variability in the Skyros pony and its relationship with other Greek and foreign horse breeds Genet. Mol. Biol. Bömcke,Elisabeth; Gengler,Nicolas; Cothran,E. Gus. In Greece, seven native horse breeds have been identified so far. Among these, the Skyros pony is outstanding through having a distinct phenotype. In the present study, the aim was to assess genetic diversity in this breed, by using different types of genetic loci and available genealogical information. Its relationships with the other Greek, as well as foreign, domestic breeds were also investigated. Through microsatellite and pedigree analysis it appeared that the Skyros presented a similar level of genetic diversity to the other European breeds. Nevertheless, comparisons between DNA-based and pedigree-based results revealed that a loss of genetic diversity had probably already occurred before the beginning of breed registration. Tests indicated the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic variation; Genetic markers; Pedigree; Horse. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100013 Evidence of lack of population substructuring in the Brazilian freshwater fish Prochilodus costatus Genet. Mol. Biol. Carvalho-Costa,Luis F.; Hatanaka,Terumi; Galetti Jr.,Pedro M.. Curimbatá-pióa (Prochilodus costatus Valenciennes, 1850) is an endemic species from the São Francisco River Basin with migratory habits, important ecological role in the ecosystem and relevant fishing importance. The present study aimed to assess the genetic variation in P. costatus in order to investigate its population genetic structure. Genetic variation was studied at three sites downstream the Três Marias dam (Upper-middle São Francisco River, State of Minas Gerais) through six specific microsatellite loci. Fish from the three sites had quite similar genetic diversity levels and no genetic differentiation was detected, suggesting that P. costatus might represent a single reproductive unit in the studied area. Alternatively, the present study was not... Tipo: Info:eu-repo/semantics/article Palavras-chave: Prochilodontidae; Curimbatá; Microsatellites; Genetic variation. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200036 Genetic variation among species, races, forms and inbred lines of lac insects belonging to the genus Kerria (Homoptera, Tachardiidae) Genet. Mol. Biol. Ranjan,Sanjeev Kumar; Mallick,Chandana Basu; Saha,Dipnarayan; Vidyarthi,Ambarish S; Ramani,Ranganathan. The lac insects (Homoptera: Tachardiidae), belonging to the genus Kerria, are commercially exploited for the production of lac. Kerria lacca is the most commonly used species in India. RAPD markers were used for assessing genetic variation in forty-eight lines of Kerria, especially among geographic races, infrasubspecific forms, cultivated lines, inbred lines, etc., of K. lacca. In the 48 lines studied, the 26 RAPD primers generated 173 loci, showing 97.7% polymorphism. By using neighbor-joining, the dendrogram generated from the similarity matrix resolved the lines into basically two clusters and outgroups. The major cluster, comprising 32 lines, included mainly cultivated lines of the rangeeni form, geographic races and inbred lines of K. lacca. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: DNA fingerprinting; Genetic variation; Kerria; Lac insects; RAPD; Tachardiidae. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300023 Genetic variation of wild and hatchery populations of the catla Indian major carp (Catla catla Hamilton 1822: Cypriniformes, Cyprinidae) revealed by RAPD markers Genet. Mol. Biol. Rahman,S.M. Zakiur; Khan,Mukhlesur Rahman; Islam,Shahidul; Alam,Samsul. Genetic variation is a key component for improving a stock through selective breeding programs. Randomly amplified polymorphic DNA (RAPD) markers were used to assess genetic variation in three wild population of the catla carp (Catla catla Hamilton 1822) in the Halda, Jamuna and Padma rivers and one hatchery population in Bangladesh. Five decamer random primers were used to amplify RAPD markers from 30 fish from each population. Thirty of the 55 scorable bands were polymorphic, indicating some degree of genetic variation in all the populations. The proportion of polymorphic loci and gene diversity values reflected a relatively higher level of genetic variation in the Halda population. Sixteen of the 30 polymorphic loci showed a significant (p < 0.05, p... Tipo: Info:eu-repo/semantics/article Palavras-chave: Catla catla; Genetic variation; RAPD markers. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100030 A novel statistical method for assessing SSR variation in autotetraploid alfalfa (Medicago sativa L.) Genet. Mol. Biol. Liu,Zhi-Peng; Liu,Gong-She; Yang,Qing-Chuan. The level of variation of simple sequence repeat (SSR) markers in cultivated alfalfa from American, Australian and Chinese sources was evaluated using a novel autotetraploid statistical method to calculate the effective number of alleles, the allele frequencies and heterozygosity. We used 19 SSR primers to screen seven polymorphic SSR loci in 320 plants from eight populations. The genetic distance and phylogenetic analysis (DISPAN) program was used to calculate the inter- and intra-population genetic relationships using the conventional binary absence/presence (0/1) method and our novel autotetraploid method. The autotetraploid method resulted in significantly higher heterozygosity (p < 0.01), average effective number (p < 0.01) and lower standard... Tipo: Info:eu-repo/semantics/article Palavras-chave: Autotetraploid; Genetic variation; Medicago sativa L.; SSR; Statistical genetics. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300015 Genetic distance between broodstocks of the marine shrimp Litopenaeus vannamei (Decapoda, Penaeidae) by mtDNA analyses Genet. Mol. Biol. Francisco,Ana Karina de; Galetti Junior,Pedro Manoel. In the constantly growing Brazilian shrimp industry the evaluation of genetic relationships between broodstocks is an useful tool for shrimp culture management programs. We established the genetic relationships between five broodstocks of the white marine shrimp Litopenaeus vannamei (Penaeidae) based on the sequencing of the mtDNA 16S rRNA and cytochrome oxidase I (COI) regions. Although no divergence was found between the broodstocks for the highly conservative 16S rRNA gene, we did find an 8.2% distance between L. vannamei and the Farfantepenaeus subtilis. Analyses of the COI region showed genetic distances of only 0.2 to 1% between the broodstocks, which contrasted with the 10.9% mean distance found between L. vannamei and F. subtilis. The small genetic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Shrimp; Litopenaeus vannamei; Genetic variation; MtDNA. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200014 Genetic variation in cultivated Rheum tanguticum populations Genet. Mol. Biol. Hu,Yanping; Xie,Xiaolong; Wang,Li; Zhang,Huaigang; Yang,Jian; Li,Yi. To examine whether cultivation reduced genetic variation in the important Chinese medicinal plant Rheum tanguticum, the levels and distribution of genetic variation were investigated using ISSR markers. Fifty-eight R. tanguticum individuals from five cultivated populations were studied. Thirteen primers were used and a total of 320 DNA bands were scored. High levels of genetic diversity were detected in cultivated R. tanguticum (PPB = 82.19, H = 0.2498, H B = 0.3231, I = 0.3812) and could be explained by the outcrossing system, as well as long-lived and human-mediated seed exchanges. Analysis of molecular variance (AMOVA) showed that more genetic variation was found within populations (76.1%) than among them (23.9%). This was supported by the coefficient... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cultivated populations; Genetic variation; ISSR; Polygonaceae; Rheum tanguticum Maxim. ex Balf. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000400010 Demarcation of informative chromosomes in tropical sweet corn inbred lines using microsatellite DNA markers Genet. Mol. Biol. Kashiani,Pedram; Saleh,Ghizan; Panandam,Jothi Malar; Abdullah,Nur Ashikin Psyquay; Selamat,Ahmad. A study of genetic variation among 10 pairs of chromosomes extracted from 13 tropical sweet corn inbred lines, using 99 microsatellite markers, revealed a wide range of genetic diversity. Allelic richness and the number of effective alleles per chromosome ranged from 2.78 to 4.33 and 1.96 to 3.47, respectively, with respective mean values of 3.62 and 2.73. According to the Shannon's information index (I) and Nei's gene diversity coefficient (Nei), Chromosome 10 was the most informative chromosome (I = 1.311 and Nei = 0.703), while Chromosome 2 possessed the least (I = 0.762 and Nei = 0.456). Based on linkage disequilibrium (LD) measurements for loci less than 50 cM apart on the same chromosome, all loci on Chromosomes 1, 6 and 7 were in equilibrium. Even... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microsatellite; Inbred line; Chromosome; Genetic variation; Linkage disequilibrium. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000400012 Variabilidade fenotípica entre cultivares brasileiras, americanas e canadenses de aveia branca. Infoteca-e VIEIRA, E. A.; CARVALHO, F. I. F. de; SILVA, M. S.; FIALHO, J. de F.. RESUMO: A variabilidade genética em programas de melhoramento pode ser incrementada pela introdução de germoplasma. Entretanto, é necessário que se conheça a distância genética entre esses e os genótipos locais, para que se maximizem as chances de êxito. O trabalho objetivou estimar a disância genética entre 15 cultivares de aveia branca, das quais 11 são estrangeiras (10 americanas e 1 canadense) e 4, brasileiras. O experimento foi conduzido em 2004 na área experimental da UFPel. O delineamento experimental foi o de blocos casualizados com três repetições. Os dados aferidos foram submetidos à análise de variância e foi estimada a matriz de distâncias de Mahalanobis entre os genótipos. A partir da matriz de distâncias foi construído um dendrograma, que... Tipo: Folhetos Palavras-chave: Cultura anual; Avena Sativa; Aveia; Genética Vegetal; Melhoramento Genético Vegetal; Variedade; Variação Genética; Annuals; Genetic variation; Genetics; Plant breeding; Oats; Varieties. Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570250 Variabilidade genética em populações de copaíba (Copaifera langsdorffii Desf. - Caesaelpiniaceae) estimada com polimorfismo de AFLP, microssatelites e sequenciamento de cpDNA. Infoteca-e CIAMPI, A. Y.; GRATTAPAGLIA, D.. Tipo: Folhetos Palavras-chave: Copaifera langsdorfii; Marcadores moleculares; Molecular markers; Copaíba; Variação Genética; Genetic variation. Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/183616 Variabilidade genética de matrizes de pequizeiro selecionadas para estudos na Embrapa Cerrados e na UPIS- Faculdades Integradas, com base nos marcadores RAPD. Infoteca-e BELLON, G.; FALEIRO, F. G.; CAMARGO, J. T.; ANDRADE, S. R. M. de; PEREIRA, A. V.; PEREIRA, E. B. C.. Tipo: Folders Palavras-chave: RAPD; Indigenous organisms; Caryocar Brasiliense; Espécie Nativa; Marcador Molecular; Melhoramento Genético Vegetal; Pequi; Variação Genética; Genetic variation; Genetic markers; Plant breeding. Ano: 2005 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569475 Variabilidade genética de acessos de Arachis pintoi avaliados em diferentes centros de pesquisa da Embrapa com base em marcadores RAPD. Infoteca-e FALEIRO, F. G.; ANDRADE, R. P. de; KARIA, C. T.; VALENTIM, J. F.; ANDRADE, C. M. S. de; RAMOS, A. K. B.; BELLON, G.; PENALOZA, A. D. P. de S.; VALLS, J. F. M.. Tipo: Folders Palavras-chave: RAPD; Feed legumes; Leguminosa Forrageira; Marcador Molecular; Melhoramento Genético Vegetal; Variação Genética; Genetic variation; Genetic markers; Plant breeding. Ano: 2005 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/555267 Análise da variabilidade genética molecular de uma coleção de trabalho de guandu (Cajanus cajan) como apoio na seleção de acessos para testes agronômicos em sistemas de integração lavoura-pecuária e recuperação de pastagens degradadas. Infoteca-e FALEIRO, F. G.; FERNANDES, F. D.; BARCELLOS, A. O.; ANDRADE, R. P.; BELLON, G.; JUNQUEIRA, K. P.; AMABILE, R. F.; MARTHA JÚNIOR, G. B.; VILELA, L.; RAMOS, A. K. B.; KARIA, C. T.; GODOY, R.. Tipo: Folders Palavras-chave: Feed legumes; Biotecnologia; Marcador Genético; Leguminosa Forrageira; Marcador Molecular; Variação Genética; Genetic variation; Genetic markers; Biotechnology. Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570173 Variabilidade genética para caracteres morfológicos entre acessos do banco de germoplasma de mandioca da Embrapa Cerrados. Infoteca-e VIEIRA, E. A.; FIALHO, J. de F.; FALEIRO, F. G.; FUKUDA, W. M. G.; JUNQUEIRA, N. T. V.. Tipo: Folders Palavras-chave: Germoplasma; Mandioca; Manihot Esculenta; Melhoramento Genético Vegetal; Variação Genética; Germplasm; Genetic variation; Cassava; Plant breeding. Ano: 2005 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569423 Diversidade genética em populações de Daubulus maidis (DeLong & Wolcott) (Hemiptera: cicadellidae) do Brasil através de marcadores RAPD-PCR. Infoteca-e OLIVEIRA, C. M. de; LOPES, J. R. S.; CAMARGO, L. E. A.; FUNGARO, M. H. P.; NAULT, L. R.. Tipo: Folders Palavras-chave: RAPD; Pests of plants; Maize; Cigarrinha; Marcador Molecular; Milho; Praga de Planta; Variação Genética; Zea Mays; Genetic markers; Genetic variation. Ano: 2004 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568343 Registros recuperados: 116 Primeira ... 1 2 3 4 5 6 ... Última

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