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Registros recuperados: 35 | |
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Veasey,Elizabeth Ann; Cardin,Daruska; Silva,Rainério Meireles; Bressan,Eduardo de Andrade; Vencovsky,Roland. |
To assess the genetic diversity and genetic structure parameters, nine populations of Oryza glumaepatula from the Amazon biome, four from the Pantanal biome, and one collected at Rio Xingu, Mato Grosso, totaling 14 populations and 333 individuals were studied with isozyme markers. Six loci were evaluated showing a moderate allozyme variability (A = 1.21, P = 20.7%, Ho = 0.005, He = 0.060). The populations from the Pantanal biome showed higher diversity levels than the Amazon biome. High genetic differentiation among the populations, expected for self-fertilizing species, was observed (F ST=0.763), with lower differentiation found among the Pantanal populations (F ST=0.501). The average apparent outcrossing rate was higher for the Pantanal populations (t a... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Isozymes; Oryza glumaepatula; Outcrossing rate; Populations. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500001 |
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TELLES,MARIANA P. DE C.; DINIZ-FILHO,JOSÉ ALEXANDRE F.; COELHO,ALEXANDRE S.G.; CHAVES,LÁZARO J.. |
Dentre as diversas árvores frutíferas nativas dos cerrados, a cagaiteira (Eugenia dysenterica DC.) merece destaque pelo seu amplo potencial econômico. A fim de fornecer algumas informações relativas ao padrão espacial da variabilidade genética desta espécie, foram realizadas análises de autocorrelação espacial das freqüências alélicas em dez subpopulações locais da região sudeste do Estado de Goiás. Foram utilizados marcadores isoenzimáticos, em um total de seis sistemas enzimáticos (SKDH, 6-PGD, alfa-EST, MDH, PGI e PGM), com oito locos polimórficos. Foi realizada uma análise de autocorrelação espacial, utilizando índices I de Moran estimados em quatro classes de distância geográfica. Os correlogramas mostraram que, de fato, a divergência genética está... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eugenia dysenterica; Isozymes; Neutral evolution; Spatial autocorrelation. |
Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200003 |
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Lázzari,Sonia M. N.. |
Seventeen clones of Rhopalosiphum padi (Linnaeus, 1758), 14 of R. maidis (Fitch, 1856), and two of R. insertum (Walker, 1849), representing a wide range of host plants and geographic distribution, were examined electrophoretically to determine intra and interspecific variation. Twenty-one enzyme systems were tested using starch-gel techniques. The electromorph variation within species was low, as expected for parthenogenetic organisms. Frequency of heterozygotes was also relatively low for most populations. The percentage of polymorphic loci ranged from 0% to 27.3% in R. padi, but it was lower (0% to 18.2%) in the completely an holocyclic R. maidis. No consistent correlation between band patterns and host plant or geographic origin could be established for... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rhopalosiphum; Aphididae; Homoptera; Isozymes. |
Ano: 1992 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000100015 |
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Collares,Eliana Antonia Silveira; Choer,Eva; Pereira,Arione da Silva. |
The objective of this work was to characterize 27 potato genotypes, using molecular markers. Polyacrylamide gel electrophoresis, RAPD techniques and isozymes of esterase, phosphoglucomutase and soluble proteins were analyzed in tubers, and isocitrate dehydrogenase, aspartate transaminase, phosphoglucomutase and peroxidase, in leaves. Eighteen primers were tested and four were chosen, kits OPX (01, 04 and 09) and OPY (07), to analyze RAPD markers in leaf extracts. Similarity and cluster analysis were conducted using Jaccard coefficient and the unweighted pair-group method using arithmetic average. Despite the differences detected in the analysis of proteins and isozymes in the tubers, as well as of isozymes in the leaves, the characterization of all... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Electrophoresis; Isozymes; RAPD; Genetic similarity. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000900006 |
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González González, Miguel. |
Para diseñar estrategias de conservación in situ de la diversidad genética del maíz, se requiere de valorar tanto a la diversidad como al potencial para incrementar la producción bajo el esquema de la agricultura tradicional como punto de referencia. Dado que el intercambio de semilla se da principalmente dentro de las comunidades rurales, se consideró al municipio de Ayapango, Edo. de Méx., para colectar las poblaciones de maíz que se manejan en aproximadamente el 20% de los hogares. Se colectaron 97 poblaciones de la raza Chalqueño, y dos de Cacahuacintle. Dentro de Chalqueño hubo poblaciones del tipo de grano cremoso (49), del conocido localmente como Palomo (19), del azul (24), del rojo (4) denominado localmente como “xitocle”, y una población de... |
Tipo: Tesis |
Palavras-chave: Diversidad genética; Maíz; Chalqueño; Conservación in situ; Isoenzimas; Doctorado; Genética; Genetic diversity; Maize; Chalqueño; In situ conservation; Isozymes. |
Ano: 2007 |
URL: http://hdl.handle.net/10521/1585 |
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SANTOS,Jaselita M.M. dos; TADEI,Wanderli Pedro; CONTEL,Eucléia P.B. |
Of eleven proteins analyzed in four Amazonian populations, the esterases showed the greatest variation, with five activity zones. EST1, EST2 and EST5 showed variation in each of the populations studied. EST1 and EST2 are each controlled by two, and EST5 by four, codomi-nant alleles. LAP presented six activity zones, with codominant variation in LAP5and LAP6.oc—GPDH was monomorphic with one activity band on starch gel and two on polyacrylamide gel. 1DH presented two activity zones, with variation in the IDHl region. PGM had a single activity zone, with variation in all populations. The Ariquemes populations showed five alleles and the other populations three, all of then codominant. Three activity zones with two codominant alleles were observed for ODH.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anopheles darlingi; Isozymes; Electrophoresis. |
Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671996000200097 |
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Orasmo, Gleice Ribeiro; Oliveira-Collet, Sandra Aparecida; Mangolin, Claudete Aparecida; Lapenta, Ana Silvia; Machado, Maria de Fátima Pires da Silva. |
Current analysis characterizes the effect of different fungicides often applied for pest control on a-and b-esterase patterns of four economically important table-wine grape cultivars (Italia, Rubi, Benitaka and Brasil) of Vitis vinifera. The a- and b-esterase patterns in bud leaves of the cultivars were assessed by native PAGE analysis. Cabrio Top® compound inhibited Est-2, Est-5, Est-6, Est-7, Est-8, Est-9 and Est-10 carboxylesterases, whereas Est-4, Est-11, Est-12, Est-13, Est-14 acetylesterases and Est-16 carboxylesterase were detected as weakly stained bands. Carboxylesterases and acetylesterases were also detected as weakly stained bands when exposed to fungicides Orthocide 500®, Positron Duo® and Folicur PM®. No changes in a- and b-esterase patterns... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.02.00.00-5 esterases; Isozymes; Fungicides; Vine clones; Differential patterns. Genética. |
Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/23400 |
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Teodoro Pardo, Claudia Verónica de. |
El objetivo de este estudio fue analizar la variabilidad genética en diferentes especies del género Anastrepha (Anastrepha ludens, A. obliqua, A. serpentina y A. striata), estudiar el flujo genético en A. ludens entre diferentes poblaciones de México y de Guatemala mediante un análisis isoenzimático, cuantificar ADN del ganglio cerebral y glándulas salivales y explorar la hibridación genómica in situ (GISH) en cada una de las especies de moscas en condiciones de laboratorio. Se analizaron los sistemas isoenzimáticos 6PGDH, IDH, ME, MDH, GPI y GOT en las cuatro especies de moscas en condiciones de laboratorio y campo, y para el flujo genético sólo cuatro sistemas fueron estudiados. Se examinaron 30 individuos (15 hembras y 15 machos) de cada población. Los... |
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Palavras-chave: Anastrepha; Contenido de ADN; Citometría de flujo; Electroforesis; GISH; Isoenzimas; Flujo genético; Variabilidad genética; DNA content; Flow cytometry; Electrophoresis; Isozymes; Gene flow; Genetic variability; Doctorado; Genética. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/569 |
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Teodoro Pardo, Claudia Verónica de. |
El objetivo de este estudio fue analizar la variabilidad genética en diferentes especies del género Anastrepha (Anastrepha ludens, A. obliqua, A. serpentina y A. striata), estudiar el flujo genético en A. ludens entre diferentes poblaciones de México y de Guatemala mediante un análisis isoenzimático, cuantificar ADN del ganglio cerebral y glándulas salivales y explorar la hibridación genómica in situ (GISH) en cada una de las especies de moscas en condiciones de laboratorio. Se analizaron los sistemas isoenzimáticos 6PGDH, IDH, ME, MDH, GPI y GOT en las cuatro especies de moscas en condiciones de laboratorio y campo, y para el flujo genético sólo cuatro sistemas fueron estudiados. Se examinaron 30 individuos (15 hembras y 15 machos) de cada población. Los... |
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Palavras-chave: Anastrepha; Contenido de ADN; Citometría de flujo; Electroforesis; GISH; Isoenzimas; Flujo genético; Variabilidad genética; DNA content; Flow cytometry; Electrophoresis; Isozymes; Gene flow; Genetic variability; Doctorado; Genética. |
Ano: 2011 |
URL: http://hdl.handle.net/10521/569 |
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Registros recuperados: 35 | |
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