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A study of the phytotoxic effects of the aerial parts of Senecio westermanii Dusén (Asteraceae) on Lactuca sativa L. and Allium cepa L. seeds BJPS
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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Ability of Allium cepa L. root tips and Tradescantia pallida var. purpurea in N-nitrosodiethylamine genotoxicity and mutagenicity evaluation Anais da ABC (AABC)
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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Accelerated aging and controlled deterioration for the determination of the physiological potential of onion seeds Scientia Agricola
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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Action of Aqueous Extracts of Phyllanthus niruri L. (Euphorbiaceae) leaves on Meristematic Root Cells of Allium cepa L. Anais da ABC (AABC)
NEVES,ERASMOVLANE S.B.; FERREIRA,PAULO MICHEL PINHEIRO; LIMA,LEONARDO H.G.M.; PERON,ANA PAULA.
This study aimed to evaluate the effects of aqueous extracts of dried Phyllanthus niruri L. (stonebreaker) leaves on Allium cepa L. root meristem cells at four concentrations, 0.02 (usual concentration), 0.04, 0.06 and 0.08mg/mL and exposure times of 24 and 48 hours. For each concentration we used a group of five onion bulbs that were first embedded in distilled water and then transferred to their respective concentrations. The radicles were collected and fixed in acetic acid (3:1) for 24 hours. The slides were prepared by the crushing technique and stained with 2% acetic orcein. Cells were analyzed throughout the cell cycle, totaling 5000 for each control and exposure time. The calculated mitotic indices were subjected to the Chi-squared statistical...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Medicinal plant; Stonebreaker; Cell division; Cellular aberrations; Allium cepa.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301131
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Agronomic and economic viability of intercropping onion and lettuce Horticultura Brasileira
Mota,Wagner F da; Pereira,Rosimeire D; Santos,Gizeli de S; Vieira,Janiele Cássia B.
The study aimed to evaluate the agronomic and economic performance of intercropping onion and lettuce on four plant densities of each species. The experiment was set up in completely randomized blocks, with four replications and treatments arranged in a 4 x 4 factorial. Treatments resulted from a combination of four (100, 80, 60, and 40% of recommended plant densities in monoculture) plant densities for both lettuce and onion. Intercropping did not affect the agronomic performance of onion or lettuce. Higher plant densities (100% for both vegetables) resulted in higher lettuce and onion yields. The best economic results were observed using (a) onion at 80% of plant density combined with lettuce at 40 and 100% and (b) onion at 100% and lettuce at all...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Allium cepa; Crop association; Cropping systems; Plant density.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000200028
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Agronomic performance of onion hybrids in Baraúna, in the semi-arid region of Brazil Rev. Ciênc. Agron.
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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Allelopathic potential of orsellinic acid derivatives BABT
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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Alterações fisicas e químicas em cebolas armazenadas sob refrigeração. Repositório Alice
MORETTI, C. L.; MELO, C. O.; MACHADO, C. M. M.; MATTOS, L. M.; MUNIZ, L. B..
Este trabalho objetivou avaliar alterações em cebolas das cultivares 'Beta Cristal' e 'Óptima' armazenadas sob refrigeração.
Tipo: Artigo de periódico Palavras-chave: Cebola; Qualidade; Pós-colheita; Armazenamento; Refrigeração; Temperatura; Allium cepa.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/939925
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An approach for the evaluation of efficiency of onion packinghouse operations Horticultura Brasileira
Camelo,Andrés F.Lopes; Horvitz,Sandra; Gómez,Perla A..
The onion is a major export crop in Argentina and obtaining consistent quality is a matter of concern to remain competitive internationally. Grading is generally done according to Mercosur standards but quality assurance programs are necessary at the packinghouse level. The objective of this study was to develop a first approach for characterizing sorting and sizing efficiency. During the 1998 season five onion packinghouses located in the Valle Bonaerense del Río Colorado (Buenos Aires Province, Argentina) were randomly selected. In all of them, variables measured were: sorting table width, bulb transport and rotation speed as well as number of bulbs/sorter/hour. Before and after sorting, samples of 100 bulbs of each size category were randomly taken and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allium cepa; Packhouse; Sorting; Quality; Postharvest; Allium cepa; Beneficiamento; Clasificação; Qualidade; Pós colheita.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000100010
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Antiproliferative action of aqueous extracts of Hymenaea stigonocarpa Mart. (Fabaceae) on the cell cycle of Allium cepa L. Anais da ABC (AABC)
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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Are salty liquid food flavorings in vitro antitumor substances? Anais da ABC (AABC)
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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Are there differences in heterozygosity of strains obtained from intercrossed and self-fertilized onion plants? Horticultura Brasileira
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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Artificially cooling of onion bulbs stored in brickwork-patterned vertical silos Horticultura Brasileira
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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As variedades crioulas de cebola e o potencial de uso em sistemas agroecologicos. Repositório Alice
PINHEIRO, R. de A.; BEVILAQUA, G. A. P.; LEITE, D. L.; EBERHARDT, P. E. R..
Objetivou-se descrever os sistemas de cultivo de cebola tradicionais e avaliar o potencial dos genótipos crioulos para sistemas agroecológicos.
Tipo: Parte de livro Palavras-chave: Agroecologia; Cebola; Allium cepa; Ecologia vegetal.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1005607
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Assessment of the antiproliferative and antigenotoxic activity and phytochemical screening of aqueous extracts of Sambucus australis Cham. & Schltdl. (ADOXACEAE) Anais da ABC (AABC)
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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Avaliação agronômica de acessos do banco ativo de germoplasma de cebola da Embrapa Clima Temperado em sistema convencional e orgânico de cultivo. Repositório Alice
FARIAS, B. F.; LEITE, D. L.; SCHWENGBER, J. E..
Objetivou-se avaliar o desempenho de oito acessos do banco ativo de germoplasma de cebola (Allium cepa) da Embrapa Clima Temperado nos sistemas orgânico e convencional de cultivo, em Pelotas-RS, na safra 2013/2014.
Tipo: Parte de livro Palavras-chave: Cebola; Allium cepa; Recurso genético; Rendimento.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1005613
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Avaliação de biofertilizantes, extratos vegetais e diferentes substâncias alternativas no manejo de tripes em cebola em sistema orgânico Horticultura Brasileira
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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Avaliação de cultivares de cebola em Petrolina-PE Horticultura Brasileira
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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Avaliação de fungicidas para o controle de Colletotrichum gloeosporioides em cebola Trop. Plant Pathol.
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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Avaliação de genótipos de cebola no Semi-Árido Nordestino Horticultura Brasileira
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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