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| Registros recuperados: 43 | |
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| SANTOS, C. A. F.; SÁ, J. F. de; GAMA, R. N. C. de S.; OLIVEIRA, A. E. S. de; OLIVEIRA, V. R.. |
| A identificação de diferentes tipos de citoplasmas associados à macho-esterilidade em cebola foi facilitada com a aplicação de marcadores de DNA em reações de reação em cadeia da polimerase (PCR), auxiliando no desenvolvimento de híbridos. O objetivo deste trabalho foi identificar, por PCR, o tipo de citoplasma presente em acessos brasileiro de cebola, de forma a facilitar o desenvolvimento de híbridos. O DNA de cinco plantas de cada acesso foi extraído de acordo com o protocolo do CTAB 2x. Entre os 30 acessos analisados, observou-se a presença dos três tipos de citoplasma. Doze acessos apresentaram tipo de citoplasma exclusivamente ?N?, sete exclusivamente ?S? e apenas um exclusivamente ?T?. Seis acessos apresentaram mistura entre os tipos de citoplasma... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: CMS; PCR; Macho-esterilidade; Melhoramento genético; Onion; Cebola; Recurso genético; Melhoramento vegetal; Allium Cepa; Citoplasma; Hibridação; Marcador Molecular. |
| Ano: 2016 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1064469 |
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| SILVA, P. T. de S. e; SOUZA, D. R. C. de; FERRACINI, V. L.. |
| O uso indiscriminado dos pesticidas vem trazendo preocupação, principalmente quanto à segurança alimentar com relação às frutas e hortaliças. Neste contexto, foi validado um método multirresíduo capaz de detectar e quantificar resíduos de pesticidas que são empregados na cebolicultura do Vale do São Francisco. Para a extração dos pesticidas, utilizou-se o método de extração QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) e determinação por GC-MS/MS triplo quadrupolo e UPLC-ESI-MS/MS triplo quadrupolo. Esse método foi validado com boa linearidade (R>0,99) para os pesticidas estudados na matriz cebola. As recuperações variaram de 63,1% a 96,2% com desvio padrão relativo (RSD) de até <11,5% para a técnica de GC-MS/MS, enquanto para... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: QuEChERS; GC-MS/MS; LC-ESI-MS/ MS; Vale do São Francisco; Pesticidas; Onion; Pesticide.; Cebola; Agrotóxico; Resíduo químico; Análise química; Praga; Allium Cepa.. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1088289 |
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| Kiehr,M; Delhey,R. |
| Freckles is a new blemish of white-scaled onion bulbs in the Lower Rio Colorado Valley (Argentina) characterized by the formation of small sclerotia imbedded in the dry scale tissue. The causal agent has been isolated from scales and symptomless roots of onion and was identified as Sclerotium sp. Although in its host range and morphology it resembles Sclerotium cepivorum, it is quite different with respect to other cultural and pathological traits. In inoculation experiments, onion and garlic plants could be infected and the typical sclerotia were formed, but no rot, a symptom characteristic for S. cepivorum, nor any other tissue deterioration was observed. The inoculated fungus could be re-isolated fulfilling Koch´s postulates. Freckles is considered a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sclerotium sp.; Sclerotium cepivorum; Onion; Argentina. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000200015 |
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| Kiehr,M; Delhey,R; Azpilicueta,A. |
| While studying the etiology of onion diseases in southern Argentina, a coelomycetous fungus was found associated with diverse disease expressions. They included the typical smudge symptoms in white onion bulbs in local markets as well as field infections on yellow- and red-coloured cultivars, with severe infections on transplants in the seed-bed. The fungus was isolated and identified as Colletotrichum circinans on the basis of its morphological, morphometric, biological and pathological characteristics. Two isolates, obtained from white bulbs and from transplants, were inoculated on bulbs of white and yellow-coloured cultivars and produced the typical smudge symptoms on the outer scales. Koch´s postulates were fulfilled by re-isolating the inoculated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colletotrichum circinans; Onion; Smudge; Southern Argentina. |
| Ano: 2012 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572012000200004 |
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| Juárez-Maldonado,A; Rosales-Velázquez,JL; Ortega-Ortiz,H; Cabrera-De-la-Fuente,M; Ramírez,H; Benavides-Mendoza,A. |
| Nanotechnology is currently an important worldwide study field because it provides control on matter at a nanometric scale. In food and agricultural fields, the applications of this technology are in early stages. Onion is one of the main vegetables grown in the world. Onion is a low calorie food which contains a large amount of flavonoids. In this work, silver nitrate application in onion was evaluated. An onion crop was developed at the University Antonio Narro in Saltillo, Mexico. Two methods of silver nitrate application were used (a nutritive solution: 0, 20, 40 and 80 mg/L of AgNO3; and foliar spray: 0, 20 and 40 mg/L of AgNO3). The samples were taken at 30, 60 and 90 days after transplanting. Total antioxidant capacity, silver accumulation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nanotechnology; Onion; Silver nitrate; Nanoparticles. |
| Ano: 2013 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572013000100013 |
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| Grisi,Patrícia Umeda; Gualtieri,Sônia Cristina Juliano; Ranal,Marli Aparecida; Santana,Denise Garcia. |
| Sapindus saponaria (soapberry) is a species that presents a great diversity of chemical compounds, such as saponins; however, few studies have examined the allelopathic effect of this species. Therefore, this study provides an evaluation of the allelopathic potential of aqueous extracts of the roots and mature leaves of S. saponaria on the germination of diaspores and seedlings growth of lettuce (Lactuca sativa) and onion (Allium cepa). The aqueous extract was prepared in the proportion of 100 g of dry plant material in 1,000 mL of distilled water (a concentration of 10% w v-1), and diluted with distilled water to 7.5, 5.0 and 2.5% concentrations. The mature leaf extracts caused delay and decrease in the germination process of the lettuce and onion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelopathy; Lettuce; Onion; Soapberry. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000100002 |
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| Registros recuperados: 43 | |
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