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| Registros recuperados: 147 | |
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| Merino,Francis José Zortéa; Ribas,Daniele Felipe; Silva,Cristiane Bezerra da; Duarte,Ana Flávia Schvabe; Paula,Cristiane da Silva; Oliveira,Maislian de; Dias,Josiane de Fátima Gaspari; Miguel,Marilis Dallarmi; Miguel,Obdulio Gomes. |
| The objective of this study was to evaluate the effects of the ethanolic crude extracts and fractions of the species Senecio westermanii Dusén on Lactuca sativa L. (lettuce) and Allium cepa L. (onion) seeds. We assessed the germination, growth, root respiration and photosynthesis of the target species in Petri dishes (9.0 cm diameter) containing filter paper n°6. The study was conducted using 50 seeds per plate and held in 4 replicates per concentration of each sample. In the germination there was an inhibitory effect of fractions hexane (FH) and chloroform (FCl) at concentrations of 500 and 1000 µg/mL. There was a reduction in the radicle growth of lettuce by 14 to 24% and a reduction of hypocotilum by 14 to 28%. As for the radicle of the onion was up 74%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Senecio westermanii/extract/effects; Lactuca sativa; Allium cepa; Allelochemicals; Allelopathy.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000300606 |
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| Rainho,Claudia R. de; Kaezer,Andréa; Aiub,Claudia A.F.; Felzenszwalb,Israel. |
| N-nitroso compounds, such as N-nitrosodiethylamine (NDEA), can be formed by the reaction of secundary amines with nitrosating agents, and are suspected to be involved in tumors in humans. NDEA has been considered a weak carcinogen in genotoxic assays probably due to the inefficient nitrosamine activation system that is used and/or to the efficient repair system. In this work, we evaluated the sensibility of Allium cepa L. root tips and Tradescantia stamen hair mutation assay (Trad-SH) using Tradescantia pallida var. purpurea for NDEA (0.1; 0.5; 5 and 25mM) genotoxicity and mutagenicity induction. Allium cepa L. was treated with different NDEA concentrations for 3h, for 3 consecutive days, including negative control (distilled water) and positive control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Genotoxicity; Mutagenicity; N-nitrosodiethylaine; Tradescantia pallida var. purpurea. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000400015 |
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| Rodo,Angelica Brod; Marcos Filho,Julio. |
| International research on vegetable seed vigor is not at the same level attained for grain crops species. This study was conducted to identify reliable procedures for the accelerated aging and controlled deterioration tests to rank onion (Allium cepa L.) seed lots according to their physiological potential. Six seed lots of the cultivars Aurora and Petroline were evaluated in the laboratory for germination, first count, seedling vigor classification, traditional and saturated salt accelerated aging (41ºC / 48 and 72 h), controlled deterioration (24% of water / 45ºC / 24 h) and seedling emergence tests. Seed moisture content after the saturated salt accelerated aging test was lower and uniform, which is considered an important advantage in comparison to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Seed analysis; Vigor. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300008 |
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| Nunes,Renato Leandro Costa; Oliveira,Alexandre Bosco de; Dutra,Alek Sandro. |
| In the Brazilian state of Rio Grande do Norte, the significant planting of onions is relatively recent, with producers seeking alternative ways to reduce losses. As a result, it was aimed to evaluate the agronomic performance of onion hybrids in the town of Baraúna in the semi-arid region of Rio Grande do Norte. The experimental design was of randomised blocks with six replications. Treatments consisted of eight hybrids (Cronus F1, Predilata F1, Serena F1, Fortaleza F1, Mata Hari, Luana, Lambada, Don Victor) and a control cultivar (IPA 11). The following were evaluated: average plant height; average number of leaves; diameter of the pseudostem; productivity; average bulb weight; rate of survival; leaf-waxiness; cultivar cycle; commercial classification of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Productivity; Precocity; Bulb classification. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000300023 |
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| Peres,Marize Terezinha Lopes Pereira; Mapeli,Ana Maria; Faccenda,Odival; Gomes,Alcir Teixeira; Honda,Neli Kika. |
| Environmental degradation caused by the excessive use of pesticides has motivated studies aimed at the discovery of new formulations for pest control. The bioassays carried out under laboratory conditions for the present study involved the germination and seedling growth of Lactuca sativa cv. Grand Rapids and Allium cepa cv. Baia Periforme treated with lecanoric acid or one of seven esters obtained from the alcoholysis of the acid. Each substance was tested at concentrations of 10-3, 10-5, 10-7 M, and 10-9 M. The results revealed that, except for lecanoric acid and methyl orsellinate, all other compounds exhibited significant differences in their action when compared with the controls. Also, A. cepa was more sensitive to the compounds assayed, at the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelopathy; Germination; Growth; Lactuca sativa; Allium cepa; Orsellinates. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400027 |
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| LACERDA,LOURRAN P.; MALAQUIAS,GEIZ; PERON,ANA PAULA. |
| In this study we evaluated the action of crude aqueous extracts obtained from rhytidome of Hymenaea stigonocarpa (jatobá-do-cerrado) on Allium cepa meristematic root cells in three concentrations: 0.082, 0.164, 0.328g/mL, at exposure times of 24 and 48 h. The slides were prepared by the crushing technique, and cells analyzed throughout the cell cycle, totaling 5000 for each control group and concentration. It was found that all three concentrations, including the lowest which is considered ideal for use, in all exposure times, had significant antiproliferative action on the cell cycle of this test system. For cells under division, we observed a high number of cells in prophase. Therefore, under the conditions studied H. stigonocarpa indicated to be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Cellular division; Cells in prophase; Medicinal plant. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301147 |
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| CARVALHO,FRANCISCO R.S.; MOURA,ANTONIO G.; RODRIGUES,GARDENIA F.; NUNES,NARCIA M.F.; LIMA,DAISY J.B.; PESSOA,CLAUDIA; COSTA,MARCILIA P.; FERREIRA,PAULO M.P.; PERON,ANA PAULA. |
| ABSTRACT The objective of this study was to evaluate the antiproliferative, cytotoxic and genotoxic potential of salty liquid synthetic flavorings of Butter, Cheddar Cheese and Onion. The antiproliferative potential (2.9-1500 µg/mL) was assessed by MTT assay after 72h using the human tumor lines SF-295 (glioblastoma), OVCAR-8 (ovarian), HCT-116 (colon) and HL-60 (promyelocytic leukemia) and primary cultures of murine Sarcoma 180 (S180) and peripheral blood mononuclear cells (PBMC). Allium cepa bulbs were exposed to growing respective doses (1 mL and 2 mL). Only Butter and Cheddar flavorings revealed cytotoxic activity on cancer cells, with IC50 values ranging from 125.4 µg/mL (Cheddar - HCT-116) to 402.6 µg/mL (Butter - OVCAR-8). Butter flavoring was the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food additives; Allium cepa; Antiproliferative action; Neoplasic cells; Toxicity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401419 |
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| Luz,José Magno Queiroz; Machado,Daniel Lucas Magalhães; Maciel,Gabriel Mascarenhas; Freitas,Joelson André de; Oliveira,Roberta Camargos de. |
| ABSTRACT The commercial use of onion hybrids is preferred by producers. In contrast, the production of hybrid onion seeds is extremely inefficient. This is due to the use of lineages obtained by successive self-fertilizations assuming the effect of inbreeding depression per se. Therefore, it is necessary to understand new alternatives to reduce the effect of inbreeding depression in the strains. The objective of this study was to evaluate possible differences in polymorphism and levels of heterozygosity of strains obtained from intercrossed and self-fertilized plants. Twelve onion populations belonging to Bayer’s breeding program (Granex, IPA-1, IPA-2 and IPA-3) were used, obtained by self-fertilization of one plant, intercrossing of two plants or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Hybrid; Onion polymorphism; Genotyping; Primers. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300274 |
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| Rêgo,Elizanilda R; Ferreira,Ana Paula S; Pereira,Danilo Manoel; Pereira,Ariana M; Pereira,Olinto L; Finger,Fernando Luiz. |
| ABSTRACT Onion is the third most consumed vegetable worldwide, such as potatoes and tomatoes. Its conservation is influenced by temperature and humidity, and greatest losses occur at postharvest due to lack of storage infrastructure. Thus, the aim of this study was to evaluate the effect of partial cooling in vertical silo on postharvest conservation of cured onion bulbs cultivar Bola Precoce. The experimental design was completely randomized, with six replicates, arranged in split plot scheme. Plots consisted of two storage conditions: onion bulbs stored in silo 1 at room temperature (T1) and bulbs stored in silo 2 with artificial cooling (T2). Subplots were two periods of bulb removal from storage (0 and 14 days). We evaluated peel color, using chroma... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Postharvest storage; Refrigeration. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000200234 |
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| TEDESCO,MARÍLIA; KUHN,ANDRIELLE W.; FRESCURA,VIVIANE DAL-SOUTO; BOLIGON,ALINE A.; ATHAYDE,MARGARETH L.; TEDESCO,SOLANGE B.; SILVA,ANTONIO C.F. DA. |
| ABSTRACT The purpose of this study was to evaluate the antiproliferative and antigenotoxic activity of Sambucus australis Cham. & Schltdl. aqueous extracts on the cell cycle of Allium cepa L. as well as determine the phenolic compounds in such extracts. S. australis inflorescences and leaves of two accessions were used for aqueous extract preparation at concentrations: 0.003 g/ml and 0.012 g/ml. A. cepa bulbs were rooted in distilled water and, subsequently, placed in treatments for 24 hours. Rootlets were collected and fixed in modified Carnoy’s solution for 24 hours and kept. The squash technique was performed for slide preparation. Root tips were smashed and stained with 2% acetic orcein, and a total of 4000 cells per treatment were analyzed. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Medicinal plants; Mitotic index; Allium cepa; Sabugueiro; High-performance liquid chromatography. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502141 |
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| Gonçalves,Paulo A.S.; Werner,Hernandes; Debarba,João F.. |
| Avaliou-se substâncias alternativas no manejo de tripes (Thrips tabaci Lind.), em cebola, cv, Crioula, no sistema orgânico. Os experimentos foram conduzidos na EPAGRI, Ituporanga (SC). Os períodos entre transplante e colheita foram de 11/09/1996 a 10/01/1997 e 13/08/1997 a 11/12/1997. O delineamento foi de blocos ao acaso com 8 tratamentos em 1996 e 12 tratamentos em 1997 e quatro repetições. Em 1996 os tratamentos incluíram o biofertilizante anaeróbico 50%, biofertilizante aeróbico 5%, sulfato de manganês 1%, extrato hidroalcoólico de própolis 0,2%, macerado de ervas ("fersoral") 2% e 4%, extrato de fumo (Nicotiana tabacum) 2 L ha-1 + 1% detergente neutro, testemunha sem aplicação. Em 1997 os tratamentos incluíram o macerado de ervas ("fersoral") 5% 10%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Thrips tabaci; Agricultura orgânica; Inseto; Agroecologia. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362004000300033 |
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| Costa,Nivaldo Duarte; Resende,Geraldo Milanez de; Dias,Rita de Cássia Souza. |
| Objetivando-se indicar cultivares de cebola mais produtivas e de melhor qualidade de bulbos para a região semi-árida, conduziu-se um ensaio no Projeto Bebedouro, Petrolina-PE, de abril a agosto de 1997. O delineamento experimental foi de blocos ao acaso com quatro repetições e as seguintes cultivares: Granex-429, Texas Grano-PRR, Brownsville, Houston, Texas Grano-502, Texas Grano-438, Conquista, Composto IPA-6, Belém IPA-9, Franciscana IPA-10, Valeouro IPA-11, Alfa Tropical (CNPH-6179) , CNPH-5898, CNPH-6074, CNPH-6040, CNPH-6067, Bola P. Empasc, XP-1, XP-2 e Crioula Mercosul. A produtividade de bulbos comerciais variou de 21,41 a 61,78 t/ha, destacando-se as cultivares Texas Grano-PRR (61,78 t/ha), Granex-429 (58,28 t/ha), Texas Grano-438 (56,97 t/ha),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Adaptação; Produtividade; Classificação de bulbos. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362000000100013 |
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| Haddad,Fernando; Maffia,Luiz A.; Mizubuti,Eduardo S. G.. |
| A antracnose foliar causada por Colletotrichum gloeosporioides é a doença mais importante da cebolicultura (Allium cepae) em Guidoval e Guiricema, MG. Para controle da doença, utilizam-se intensivamente fungicidas, principalmente benomil (Ben), o que tem sido pouco efetivo. Neste trabalho, testou-se a hipótese da existência de isolados de C. gloeosporioides resistentes ao Ben e se comparou a eficiência de diferentes fungicidas no controle do patógeno. Nas concentrações testadas, Ben impediu o crescimento micelial do fungo, e a germinação de conídios decresceu com o aumento da concentração do produto. Independente do isolado do patógeno e da concentração dos fungicidas, ocorreu maior inibição da germinação com Tiofanato metílico (Tm) + Mancozeb (Man), Man,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Controle químico; Manejo; Allium cepa. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000400016 |
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| Souza,Jean de O; Grangeiro,Leilson C; Santos,Gilmara Mabel; Costa,Nivaldo Duarte; Santos,Carlos Antônio F; Nunes,Glauber Henrique de S. |
| Neste trabalho foi avaliado o desempenho produtivo de genótipos de cebola no Semi-Árido Nordestino. Foram conduzidos, simultaneamente, experimentos em três locais (Mossoró-RN, Petrolina-PE e Juazeiro-BA), de maio a setembro de 2004. Os delineamentos foram em blocos completos casualizados, com três repetições. Os tratamentos foram constituídos pelos genótipos de cebola: CNPH 6415, CNPH 6047, CNPH 6244, CNPH 6400 Chata, CNPH 6400 Redonda, CPACT 1, CPACT 2, CPACT 3, Granex 429, Belém IPA 9, BRS Cascata, Crioula Alto Vale, Bola Precoce, Primavera, Régia, Valeouro IPA-11, Brisa e Alfa São Francisco. Foram avaliados o peso médio de bulbos comerciais, produtividades total, comercial e não comercial de bulbos. Os genótipos com os melhores desempenhos produtivos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Rendimento de bulbos; Adaptação. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000100019 |
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| NUNES, M. U. C.; ARAUJO, H. M. de. |
| O cultivo da cebola representa uma necessidade para o Acre, uma vez que o Estado se abastece com o produto importado, sendo ofertado a preço elevados ao consumidor. Além da importação, as quantidades recebidas são inferiores à demanda, havendo sempre um déficit no mercado. Em busca de uma solução, a Embrapa, através da UEPAE/Rio Branco, desenvolve trabalhos de introdução de cultivares da cebola, melhoradas pelo Instituto de Pesquisas Agronômicas de Pernambuco (IPA). Ele tem o objetivo principal de verificar a viabilidade técnica de produzir cebola no Acre. Entre as cultivares testadas (IPA-1, IPA-2, IPA-3, IPA-4 e IPA-5), observaram-se diferenças de produção nas distintas épocas de plantio. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Aclimatación; Cebollas; Ensayos de variedades; Factores ambientales; Firomejoramiento.; Melhoramento genético vegetal; Cebola; Allium cepa; Comportamento de variedade; Aclimatação; Condição ambiental; Plant breeding; Onions; Variety trials; Acclimation; Environmental factors.. |
| Ano: 1982 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492322 |
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| Loges,Vivian; Lemos,Margarida A.; Resende,Luciane V.; Menezes,Dimas; Candeia,Jonas A.; Santos,Venézio Felipe dos. |
| A variabilidade existente para caracteres de produção associados à resistência a Thrips tabaci (Thysanoptera: Thripidae) foi estimada em 62 progênies de meios irmãos da cv. de cebola ValeOuro IPA-11. As testemunhas foram as cvs. ValeOuro IPA-11 e os seus genitores Roxa IPA-3 e Belém IPA-9. O experimento foi conduzido em condições de campo, em Juazeiro (BA), utilizando delineamento experimental de blocos ao acaso, com três repetições, 65 tratamentos. As estimativas dos parâmetros para as progênies de ValeOuro IPA-11 indicaram forte interferência ambiental para todos os caracteres. As maiores estimativas das herdabilidades e o ganhos esperados com 20% de pressão de seleção foram, respectivamente, de 35,74% e 10,39% para produção de bulbos comerciais (PBC),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Thrips tabaci; Herdabilidade; Parâmetros genéticos; Tolerância; Resistência de plantas. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362004000400021 |
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| Registros recuperados: 147 | |
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