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| Registros recuperados: 29 | |
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| Ferreira,Mariane Gonçalves; Azevedo,Alcinei Mistico; Siman,Luhan Isaac; da Silva,Gustavo Henrique; Carneiro,Clebson dos Santos; Alves,Flávia Maria; Delazari,Fábio Teixeira; da Silva,Derly José Henriques; Nick,Carlos. |
| ABSTRACT Germplasm classification by species requires specific knowledge on/of the culture of interest. Therefore, efforts aimed at automation of this process are necessary for the efficient management of collections. Automation of germplasm classification through artificial neural networks may be a viable and less laborious strategy. The aims of this study were to verify the classification potential of Capsicum accessions regarding/ the species based on morphological descriptors and artificial neural networks, and to establish the most important descriptors and the best network architecture for this purpose. Five hundred and sixty-four plants from 47 Brazilian Capsicum accessions were evaluated. Neural networks of multilayer perceptron type were used in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum spp.; Garson’s method; Artificial intelligence; Taxonomy; Germplasm bank. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300203 |
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| FACCIOLI-MARTINS, P. Y.; SOUZA, V. de; PINHEIRO, R. R.. |
| Resumo: Esta publicação tem por objetivo descrever a história, a composição da Coleção de trabalho de Microrganismos Patogênicos a Caprinos e Ovinos, e de que forma ela tem conservado, caracterizado, documentado e utilizado seus isolados. A coleção foi criada em 2012 e atualmente é composta por 141 cepas bacterianas e seis cepas virais, pertencentes às espécies Corynebacterium pseudotuberculosis, Staphylococcus aureus e ao gênero Lentivirus. Esses isolados são utilizados para produção de antígenos para imunodiagnósticos, em diagnósticos moleculares e na avaliação de resistência a antimicrobianos e ação de anti-sépticos e antimicrobianos. Participa de projetos das coleções institucionais e de gestão da qualidade. [Collection of Goat and Sheep Pathogenic... |
| Tipo: Artigo na mídia |
Palavras-chave: Caracterização; Germplasm bank; Characterization; Diagnosis; Quality; Pathogenic Microorganisms; Caprino; Ovino; Banco de Germoplasma; Conservação; Resistência Genética; Diagnostico; Qualidade; Sheep diseases; Goat diseases; Germplasm conservation; Conservation banks; Genetic resistance; Small ruminants; Brazil. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1123793 |
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| KALIL FILHO, A. N.; LUZ, A. I. R.; SÁ SOBRINHO, A. F. de; WOLTER, E. L. A.; PEREIRA JÚNIOR, O. L.. |
| Visando o melhoramento genetico da sacaca, foi instalado um Banco Ativo de Germoplasma (BAG) na Embrapa Amazonia Ocidental. Estao sendo feitas coletas e multiplicacao vegetativa de acesso de sacaca de diversos locais da Amazonia. O BAG-Sacaca visa nao somente a conservacao do germoplasma, mas o estudo da variabilidade genetica entre acesso, para selecao de genotipos superiores para producao de biomassa (folhas), e com maior potencial de producao de oleos essenciais. Ate o presente, foram coletados 15 acessos. Dentro de procedencias foram detectados dois ecotipos: sacaca branca e roxa ou vermelha. Esta com folhas maiores e de cor verde-escura, parecendo possuir maior teor de oleo. Entretanto, analise preliminar de oleo, sujeito a confirmacao, evidencia a... |
| Tipo: Folhetos |
Palavras-chave: Sacaca; Brasil; Amazonas; Germplasm bank; Oil; Banco de Germoplasma; Óleo; Croton cajucara. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667997 |
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| Vettorazzi, Renato Gobbi; Carvalho, Virginia Silva; Sudré, Cláudia Pombo; Rodrigues, Rosana. |
| This study aimed to develop a protocol for the in vitro conservation of 30 accessions of sweet potato collected in the northern region of Rio de Janeiro State, Brazil, aiming to extend the period between subcultures for this species. An in vitro minimal growth experiment was established with accession UENF 1931 in a factorial arrangement consisting of four concentrations of mineral salts in MS medium and four concentrations of sucrose, at two temperatures. The others accessions were grown in medium containing 100% MS salts and 2% sucrose, which was the medium that allowed the in vitro conservation of accession UENF 1931 for a longer time period. For this second experiment, 30 accessions of sweet potato and two temperatures were used. Plant height, number... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.00-8 Ipomoea batatas; Minimal growth; Germplasm bank; Maintenance of diversity; Fitotecnia. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32700 |
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| Gill-Langarica,Homar R.; Muruaga-Martínez,José S.; Vargas-Vázquez,M.L. Patricia; Rosales-Serna,Rigoberto; Mayek-Pérez,Netzahualcoyotl. |
| A core collection of the common bean (Phaseolus vulgaris L.), representing genetic diversity in the entire Mexican holding, is kept at the INIFAP (Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Mexico) Germplasm Bank. After evaluation, the genetic structure of this collection (200 accessions) was compared with that of landraces from the states of Oaxaca, Chiapas and Veracruz (10 genotypes from each), as well as a further 10 cultivars, by means of four amplified fragment length polymorphisms (AFLP) +3/+3 primer combinations and seven simple sequence repeats (SSR) loci, in order to define genetic diversity, variability and mutual relationships. Data underwent cluster (UPGMA) and molecular variance (AMOVA) analyses. AFLP analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Amplified fragment length polymorphisms (AFLP); Germplasm bank; Genetic relationships; Simple sequence repeats (SSR). |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400012 |
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| Chiorato,Alisson Fernando; Carbonell,Sérgio Augusto Morais; Benchimol,Luciana Lasry; Chiavegato,Marilia Barbosa; Dias,Luiz Antonio dos Santos; Colombo,Carlos Augusto. |
| Germplasm banks store genotype samples, improved varieties, landraces and wild species, all generically denominated accessions. The importance of characterizing germplasm banks is based on the identification and knowledge of relevant traits for genetic improvement and ex situ germplasm conservation. Thus, the present study had as aim the evaluation of the genetic diversity among 220 accessions of a Brazilian common bean germplasm bank of the "Instituto Agronômico de Campinas" (IAC) by means of 23 morpho-agronomical descriptors and 19 RAPD loci. These accessions correspond to genotypes from the Andean and Middle American gene pool as well as from cultivars derived from common bean improvement programs. The Middle American accessions and the improved... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Germplasm bank; Botanical descriptors; Multivariate analyses. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300007 |
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| Bertoni,Bianca W.; Telles,Mariana P. de C.; Malosso,Milena G.; Torres,Simone C.Z.; Pereira,José O.; Lourenço,Mirian V.; França,Suzelei de C.; Pereira,Ana M.S.. |
| Jacaranda decurrens (Bignoniaceae) is an endemic species of the Cerrado with validated antitumoral activity. The genetic diversity of six populations of J. decurrens located in the State of São Paulo was determined in this study by using molecular markers for randomly amplified polymorphic DNA (RAPD) and amplified fragment length polymorphism (AFLP). Following optimization of the amplification reaction, 10 selected primers generated 78 reproducible RAPD fragments that were mostly (69.2%) polymorphic. Two hundred and five reproducible AFLP fragments were generated by using four selected primer combinations; 46.3% of these fragments were polymorphic, indicating a considerable level of genetic diversity. Analysis of molecular variance (AMOVA) using these two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bignoniaceae; Carobinha; Cerrado; Germplasm bank; Preservation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300025 |
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| Laviola,Bruno Galvêas; Rosado,Tatiana Barbosa; Bhering,Leonardo Lopes; Kobayashi,Adilson Kenji; Resende,Marcos Deon Vilela de. |
| The objective of this work was to estimate the genetic parameters and variability among accessions (half-sib families) of physic nut (Jatropha curcas) during the early stages of development. For this study, 110 accessions in the first year of development of the physic nut germplasm bank, maintained at Embrapa Cerrados, DF, Brazil, were evaluated in situ. The experiment was established in a randomized complete block design, with two replicates and five plants per plot arranged in rows at 4x2 m spacing. Grain yield, total number of branches per plant, plant height, stem diameter, canopy projection on the row, canopy projection between rows, canopy volume, number of days until first flowering and height of the first inflorescence were evaluated. Estimates of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas; Germplasm bank; Plant breeding. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001000010 |
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| Bertoni,Bianca Waléria; Astolfi Filho,Spartaco; Martins,Ernani Ronie; Damião Filho,Carlos Ferreira; França,Suzelei de Castro; Pereira,Ana Maria Soares; Telles,Mariana Pires de Campos; Diniz Filho,José Alexandre F.. |
| Zeyheria montana, an endemic species of the Bignoniaceae family from the Brazilian Cerrado's known for its anti-cancer properties, is widely used as imuno stimulant in the popular medicine and its therapeutic activity must be validated by scientific data. The objective of this work was to evaluate the genetic variability of eight plant populations collected within the state of São Paulo, Brazil, via Random Amplification of Polymorphic DNA (RAPD) used as molecular markers. After an optimized protocol for the amplification reaction, nine selected primers generated 105 reproducible bands, indicating up to 60% polymorphism. Analysis of molecular variance (AMOVA) revealed higher genetic variation within populations (84.03%) than among populations (15.97%). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bignoniaceae; Germplasm bank; Bolsa-de-pastor; Conservation. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400012 |
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| Danner,Moeses Andrigo; Citadin,Idemir; Sasso,Simone Aparecida Zolet; Sachet,Marcos Robson; Mazaro,Sérgio Miguel. |
| The purpose of this study was to characterize cultivated genotypes of three jabuticaba species (Plinia cauliflora, P. trunciflora, and P. jaboticaba). Phenology and fruit growth, as well as leaf, flower and fruit traits were evaluated. Variability in all traits was observed among genotypes of the three jabuticaba species. The trait peduncle size is indicated for differentiation of the three species under study. The leaf and fruit sizes of the genotypes P. trunciflora 3, P. trunciflora 4, P. trunciflora 5 and P. jaboticaba 1 differ from those described in the literature for these species, indicating the formation of ecotypes. Jabuticaba fruit skin contains high anthocyanin and flavonoid concentrations, with potential use in food and pharmaceutical industries. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plinia sp; Germplasm bank; Genetic variability; Fruit quality. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000300019 |
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| Nicoli,Alessandro; Zambolim,Laércio; Costa,Rodrigo Veras da; Guimarães,Lauro José Moreira; Lanza,Fabrício Eustáquio; Silva,Dagma Dionísia da; Cota,Luciano Viana. |
| ABSTRACT: Adoption of resistant cultivars is the primary measure used to control anthracnose stalk rot. The goal of this study was to identify maize-resistant genotypes to anthracnose stalk rot, which are similar to the hybrid 2B710. Experiments were performed at Embrapa Maize and Sorghum experimental fields in Brazil. The first experimental trial evaluated 234 maize lines as well as two commercials hybrids, BRS1010 (susceptible) and 2B710 (resistant). Artificial inoculations were performed with a strain at the blister (R2) phase, and evaluation of disease severity was performed after 30 days. The second experimental trial evaluated 48 maize lines and hybrids, inoculated with two Colletotrichum graminicola strains. In the first trial, eight resistance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Germplasm bank; Colletotrichum graminicola. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101885 |
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| Silva,Tatiane Loureiro da; Scherwinski-Pereira,Jonny Everson. |
| The objective of this work was to evaluate in vitro storage of Piper aduncum and P. hispidinervum under slow-growth conditions. Shoots were stored at low temperatures (10, 20 and 25°C), and the culture medium was supplemented with osmotic agents (sucrose and mannitol - at 1, 2 and 3%) and abiscisic acid - ABA (0, 0.5, 1.0, 2.0 and 3.0 mg L-1). After six-months of storage, shoots were evaluated for survival and regrowth. Low temperature at 20ºC was effective for the in vitro conservation of P. aduncum and P. hispidinervum shoots. In vitro cultures maintained at 20ºC on MS medium showed 100% survival with slow-growth shoots. The presence of mannitol or ABA, in the culture medium, negatively affected shoot growth, which is evidenced by the low rate of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ex situ conservation; Germplasm bank; Micropropagation. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400007 |
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| Cabral,Betânia Lúcia Rocha; Souza,Joelson Araújo de; Ando,Akihiko; Veasey,Elizabeth Ann; Cardoso,Eloisa Maria Ramos. |
| Cassava (Manihot esculenta Crantz) belongs to the Euphorbiaceae family, and is widely cultivated in Brazil. The objective of this study was to evaluate the isoenzymatic variability of 200 cassava accessions from the germplasm bank of Embrapa Amazonia Oriental. Seven groups were formed according to their origin: 1-Amazonas, 2-Amapa, 3-Bahia, 4-Para, 5-Rondonia, 6-Various, for accessions with a maximum of three individuals per place of origin, and 7 - Accessions of indefinite origin. The accessions were also evaluated as a whole. For the electrophoretic analyses, samples of young leaves were used in a 12% starch gel. Eight isoenzymatic systems were evaluated: acid phosphatase (ACP), leucine aminopeptidase (LAP), glucose-6-phosphate dehydrogenase (G6PDH),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta; Genetic variability; Germplasm bank; Isozymes. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300017 |
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| SOUZA, A. das G. C. de; GUIMARÃES, R. R.; NUNES, C. D. M.. |
| Por considerar o melhoramento genetico linha basica e prioritaria paraa cultura do cupuacu (Theobroma grandiflorum), o CPAA tem em seus objetivos a obtencao de materiais produtivos, com frutos de bom tamanho e boa qualidade, resistentes a pragas e doencas rusticas, com amplo periodo de colheita, com variedades precoces, medianas e tardias. A metodologia de trabalho desenvolvida consta de selecao, coleta e introducaode germoplasma, caracterizacao e avaliacao do germoplasma introduzido e sua utilizacao no processo de melhoramento. Ate o presente, foram coletados e introduzidos um total de 253 diferentes genotipos, sendo 150provenientes de material vegetativo e 103 progenies meios-irmaos. O total de genotipos estabelecidos, no entanto, atinge a soma de... |
| Tipo: Folhetos |
Palavras-chave: Melhoramento genetico; Brasil; Amazonas; Germplasm bank; Banco de Germoplasma; Cupuaçu; Theobroma Grandiflorum; Breeding. |
| Ano: 1992 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665445 |
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| Luciano,Karina M da F.; Mata,Mario E. R. M. Cavalcanti; Fortes,Mauri; Duarte,Maria E. M.. |
| ABSTRACT Cryopreservation is a technique used to preserve genetic material at ultra-low temperatures in cryogenic germplasm banks. In order to enable the cryopreservation of a seed, it is necessary to study its appropriate freezing temperature and its water content, because seeds reach maximum physiological quality with high water contents, and they tolerate drying when they are orthodox seeds, but they may not tolerate cryopreservation. Therefore, the objective of this study was to analyze the influence of initial water content (50 to 10% wet basis) on the kinetic behavior of the lima bean seed at the temperature of −150 °C, in addition to determining changes in its physiological quality (germination and vigor) when cryopreserved (−150 °C) for 30 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus lunatus; Cryogenic; Modeling; Germplasm bank. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000300331 |
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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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| Registros recuperados: 29 | |
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