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| Registros recuperados: 238 | |
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| Romero Rodríguez, Jorge Arturo. |
| Especies de la familia Caricaceae han encontrado condiciones favorables para desarrollar y diversificarse en México, cinco de los géneros que prosperan en América, cuentan con al menos una especie en el país y se considera que la especie más importante económicamente, Carica papaya L., tiene su centro de alta diversidad en el sureste del país, además de dos géneros endémicos que prosperan en regiones semiáridas y de bosque mesófilo. Sin embargo, la investigación que se realiza al respecto es limitada y buena parte de la información existente de la familia proviene de otras latitudes. Dada la responsabilidad del país de salvaguardar y dar uso eficiente a la diversidad de Carica papaya y demás integrantes de la familia Caricaceae, la presente investigación... |
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Palavras-chave: Germoplasma; Diversidad; Longevidad; Latencia; Acondicionamiento; Germplasm; Diversity; Longevity; Latency; Profit; Producción de Semillas; Doctorado. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2192 |
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| Bonilla Barrientos, Olga. |
| En algunas regiones de los estados de Puebla y Oaxaca, los jitomates (Solanum lycopersicum L.) nativos conocidos como ‘arriñonados’, ‘chinos criollos’, ‘cuadrados’ o ‘tipo pimiento’, ‘ojo de venado’ y ‘cereza’, son ampliamente cultivados para el autoconsumo y su comercialización local. Estos materiales deben estudiarse, pues poseen un gran valor cultural y alimenticio, además son fuentes de germoplasma para usarse en programas de mejoramiento genético del jitomate en México. Con el objetivo de estudiar la diversidad agronómica y morfológica de jitomates nativos de amplio uso local en Puebla y Oaxaca, para aprovecharlos en programas de mejoramiento en el corto, mediano y largo plazo, se evaluaron 40 colectas de jitomate nativo de Puebla y Oaxaca, más el... |
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Palavras-chave: Solanum lycopersicum L.; Diversidad; Germoplasma; Mejoramiento; Diversity; Germplasm; Plant breeding; Genética; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/1874 |
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| Dwivedi,Sangam; Sahrawat,Kanwar; Puppala,Naveen; Ortiz,Rodomiro. |
| Microbiota in the gut play essential roles in human health. Prebiotics are non-digestible complex carbohydrates that are fermented in the colon, yielding energy and short chain fatty acids, and selectively promote the growth of Bifidobacteria and Lactobacillae in the gastro-intestinal tract. Fructans and inulin are the best-characterized plant prebiotics. Many vegetable, root and tuber crops as well as some fruit crops are the best-known sources of prebiotic carbohydrates, while the prebiotic-rich grain crops include barley, chickpea, lentil, lupin, and wheat. Some prebiotic-rich crop germplasm have been reported in barley, chickpea, lentil, wheat, yacon, and Jerusalem artichoke. A few major quantitative trait loci and gene-based markers associated with... |
| Tipo: Journal article |
Palavras-chave: Germplasm; Gut microbiota; Human health; Non-digestible fibers; Transgene. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000500008 |
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| Solano,Jaime; Mathias,Monica; Esnault,Florence; Brabant,Philippe. |
| Background: The object of this work was to determine the genetic and allelic diversity of Solanum species present in Chile, assessing allelic distribution among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum L., using microsatellite markers. Results: A high level of allelic richness was found in the potatoes studied. The seven microsatellite markers used presented a total of 64 allelic variants among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum. The SSR loci generated an average of 9.16 alleles/locus. The group with the highest PIC was that of native varieties collected in the Chiloe archipelago. The high PIC values found indicate that the native varieties from Chiloe have a low level of... |
| Tipo: Journal article |
Palavras-chave: Dendrogram; Germplasm; SSR markers. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000600008 |
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| Techio,Vânia Helena; Davide,Lisete Chamma; Pereira,Antônio Vander; Bearzoti,Eduardo. |
| Cytotaxonomic studies were carried out on 26 accessions of Pennisetum spp. originating from the Active Germplasm Bank of Embrapa Gado de Leite-Juiz de Fora, Minas Gerais, Brazil.This study presents cytogenetics and reproductive morphological data for each one of these accessions, which allowed groupings and suggest botanical identifications to be established. The metaphases of the accessions characterized as P. purpureum confirmed the presence of 2n = 28 chromosomes that have already been described for this species. For the hybrids between P. purpureum and P. glaucum and for the hexaploids, resulting from the chromosome duplication of these hybrids, 2n = 21 and 2n = 42 chromosomes were confirmed, respectively. The wild accession identified as P. setosum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pennisetum; Cytogenetic; Taxonomy; Germplasm; Genetic divergence. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200014 |
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| Schuster,Ivan; Vieira,Elisa Serra Negra; Silva,Glacy Jaqueline da; Franco,Francisco de Assis; Marchioro,Volmir Sérgio. |
| Wheat (Triticum aestivum) is one of the most important food staples in the south of Brazil. Understanding genetic variability among the assortment of Brazilian wheat is important for breeding. The aim of this work was to molecularly characterize the thirty-six wheat cultivars recommended for various regions of Brazil, and to assess mutual genetic distances, through the use of microsatellite markers. Twenty three polymorphic microsatellite markers (PMM) delineated all 36 of the samples, revealing a total of 74 simple sequence repeat (SSR) alleles, i.e. an average of 3.2 alleles per locus. Polymorphic information content (PIC value) calculated to assess the informativeness of each marker ranged from 0.20 to 0.79, with a mean of 0.49. Genetic distances among... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Germplasm; Cultivar characterization; Cluster analysis; Molecular markers. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300019 |
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| Amorim,Edson P.; Vilarinhos,Alberto D.; Cohen,Kelly O.; Amorim,Vanusia B.O.; Santos-Serejo,Janay A. dos; Silva,Sebastião Oliveira e; Pestana,Kátia N.; Santos,Vânia J. dos; Paes,Norma S.; Monte,Damares C.; Reis,Ronaldo V. dos. |
| The aim of this work was to evaluate the carotenoid content and genetic variability of banana accessions from the Musa germplasm collection held at Embrapa Cassava and Tropical Fruits, Brazil. Forty-two samples were analyzed, including 21 diploids, 19 triploids and two tetraploids. The carotenoid content was analyzed spectrophotometrically and genetic variability was estimated using 653 DArT markers. The average carotenoid content was 4.73 µg.g-1, and ranged from 1.06 µg.g-1 for the triploid Nanica (Cavendish group) to 19.24 µg.g-1 for the triploid Saney. The diploids Modok Gier and NBA-14 and the triploid Saney had a carotenoid content that was, respectively, 7-fold, 6-fold and 9-fold greater than that of cultivars from the Cavendish group (2.19 µg.g-1).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diploids; Germplasm; Molecular markers; Musa sp.; Variability. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100014 |
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| Ribeiro,Wellington S; Costa,Lucas C; Dias,Fabíola S; Silva,Francisco CS; Pinto,Cleide MF; Finger,Fernando L. |
| Breeding programs seek to reduce the time spent assessing characteristics more times than necessary. However, this reduction should in no way undermine the representativeness and reliability of the information. Thus, an important success factor in breeding programs is the knowledge of the ideal number of assessments needed to evaluate commercially important characteristics in each species or population. In this context, this study aimed to determine the repeatability coefficient of eight biometric traits in four populations of ornamental pepper, seeking to increase the efficiency of evaluation and selection processes. There was no significant influence of the calculation method used over the estimate of the repeatability coefficient. The results indicated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum; Ornamental plants; Statistical analysis; Breeding; Germplasm. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000300352 |
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| Nascimento,Ítala JB; Nunes,Glauber HS; Sales Júnior,Rui; Silva,Katchen JP; Guimarães,Izabel M; Michereff,Sami J. |
| The aims of the present study were to assess the reaction of melon accessions to crater rot, caused by Myrothecium roridum, and study the inheritance of resistance. In the first experiment, 30 melon accessions from northeastern Brazil were assessed in a randomized block design with two replicates. Each plot was formed by a row of 12 plants, from which three fruits were sampled and used for inoculation. Each fruit was inoculated at four equidistant sites on the surface. Ten wounds were made at each site to an approximate depth of 3.0 mm, to which 0.05 mL of conidial suspension was placed at a concentration of 10(6) spores mL-1 of sterilized distilled water with the aid of a pipette. The fruits were placed on Petri dishes and enveloped in polyethylene bags... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis melo; Myrothecium roridum; Germplasm; Genetic control; Poligenes. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000300017 |
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| Nunes,Raquel SC; Pinhati,Fernanda R; Golinelli,Luciana P; Rebouças,Tiyoko Nair H; Paschoalin,Vânia Margaret F; Silva,Joab T da. |
| Taro (Colocasia esculenta) is a tuberous plant belonging to the Araceae family whose tuber is the 14th most consumed food crop in the world. Characterized as an unconventional vegetable, taro is grown in Brazil as a subsistence crop, but in recent years began to gain commercial importance, especially in the states of Espirito Santo, Minas Gerais and Rio de Janeiro. To avoid loss of genetic diversity of the local varieties traditionally grown in Brazil a core collection for taro germplasm has been developed by the Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural do estado do Espirito Santo (Incaper). The aim of this study was to perform a molecular characterization of the seven regional core collections. Genetic diversity of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colocasia esculenta; Germplasm; Cultivars. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100018 |
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| Silva,Alysson J da; Oliveira,Gustavo HF de; Pastoriza,Rhuan JG; Maranhão,Eduardo HA; Pedrosa,Elvira MR; Maranhão,Sandra RVL; Boiteux,Leonardo S; Pinheiro,Jadir B; Carvalho Filho,José Luiz S de. |
| ABSTRACT Meloidogyne enterolobii (=M. mayaguensis) is an emerging plant pathogen capable of inducing root galls and yield reduction in a wide range of host species. This pathogen has also been reported as a global threat for tomato (Solanum lycopersicum) crop production mainly due to its ability to overcome the resistance meditated by the Mi-1 gene. Despite the potential importance of this nematode, sources of resistance to M. enterolobii are not yet available for breeding purposes. The main objective of the present work was to evaluate a large Solanum (section Lycopersicum) germplasm (comprising nine species and one botanic variety) aiming to identify useful sources of resistance to M. enterolobii. In the first screening assay, 101 accessions and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum spp.; Germplasm; Screening; Root-knot nematode. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000200188 |
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| Registros recuperados: 238 | |
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