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Avaliação de recursos genéticos agrícolas: análise nutricional e anti-nutricional de variedades regionais de feijão (Phaseolus vulgaris L.)

Gouveia, Carla Susana Silva
Fonte: Universidade da Madeira Publicador: Universidade da Madeira
Tipo: Dissertação de Mestrado
Publicado em 14/11/2013 Português
Relevância na Pesquisa
98.68595%
O presente trabalho teve como objectivo proceder à avaliação da qualidade nutricional de 20 variedades regionais de Phaseolus vulgaris L. e à análise comparativa dos parâmetros bioquímicos (nutricionais e anti-nutricionais) obtidos recorrendo às técnicas analíticas convencionais por química molhada e de NIRS (Near Infra-Red Spectroscopy). Uma tipificação das variedades regionais de feijão foi realizada recorrendo a sete parâmetros ou caracteres (traits) nutricionais compreendidos em humidade, proteína bruta, lípidos totais, açúcares solúveis, amido, cinzas e minerais. A faseolamina foi incluída na tipificação do feijão como parâmetro anti-nutricional enquanto inibidor de enzimas digestivas. A variedade que apresentou uma melhor qualidade nutricional foi o feijão vermelho (ISOP 00724), enquanto que o feijão Filipe (ISOP 00478) apresentou uma maior actividade inibitória da PPA (amilase do pâncreas suíno), contribuindo de igual forma como uma característica de qualidade deste feijão. A aplicação de técnicas de quimiometria na quantificação dos vários parâmetros de qualidade nutricional, através da técnica de NIRS, permitiu o desenvolvimento dos modelos PLS globais após a colecção dos valores de referência e obtenção dos respectivos espectros de cada ISOP em análise. A análise comparativa dos parâmetros nutricionais...

Caracterização físico-química e atividade biológica de diferentes amostras de casulas, Phaseolus vulgaris L.

Lopes, Edite Dias
Fonte: Instituto Politécnico de Bragança Publicador: Instituto Politécnico de Bragança
Tipo: Dissertação de Mestrado
Português
Relevância na Pesquisa
98.96947%
O feijão (Phaseolus vulgaris L.) é uma leguminosa largamente consumida no mundo, estando-lhe associadas diversa propriedades nutricionais. Na região de Trás os Montes existe a tradição de colher o feijão ainda verde na vagem, quando o grão se encontra bem formado, mas ainda não seco. Depois de se encontrar bem seco o grão no interior da vagem, os feijões são guardados em sacos de pano para consumir nos dias frios de inverno. A este produto tão típico desta região é dado o nome de cascas ou casulas. Com o presente trabalho procedeu-se à avaliação das características físicas e químicas de 11 amostras de casulas antes e após a cozedura, provenientes de diferentes localidades, no ano de 2013, nomeadamente no que diz respeito à cor, humidade, cinzas, proteína, gordura e atividade antioxidante. Em relação à cor, as amostras apresentaram tonalidades distintas, resultado das suas cores diferentes. Os teores de humidade das cascas e dos feijões secos variaram significativamente entre si, ao contrário do teor em cinzas. O tempo médio de cozedura das amostras de cascas foi superior ao dos feijões, não sendo proporcional ao volume de água adicionado. A absorção de água ao longo do cozimento fez com que as amostras de feijões e cascas cozidos fossem essencialmente constituídas por água. Pelo contrário...

Inheritance of growth habit detected by genetic linkage analysis using microsatellites in the common bean (Phaseolus vulgaris L.)

CAMPOS, Tatiana de; OBLESSUC, Paula Rodrigues; SFORCA, Danilo Augusto; CARDOSO, Juliana Morini Kupper; BARONI, Renata Moro; SOUSA, Adna Cristina Barbosa de; CARBONELL, Sergio Augusto Morais; CHIORATTO, Alisson Fernando; GARCIA, Antonio Augusto Franco; RUB
Fonte: SPRINGER Publicador: SPRINGER
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
98.68595%
The genetic linkage map for the common bean (Phaseolus vulgaris L.) is a valuable tool for breeding programs. Breeders provide new cultivars that meet the requirements of farmers and consumers, such as seed color, seed size, maturity, and growth habit. A genetic study was conducted to examine the genetics behind certain qualitative traits. Growth habit is usually described as a recessive trait inherited by a single gene, and there is no consensus about the position of the locus. The aim of this study was to develop a new genetic linkage map using genic and genomic microsatellite markers and three morphological traits: growth habit, flower color, and pod tip shape. A mapping population consisting of 380 recombinant F10 lines was generated from IAC-UNA x CAL143. A total of 871 microsatellites were screened for polymorphisms among the parents, and a linkage map was obtained with 198 mapped microsatellites. The total map length was 1865.9 cM, and the average distance between markers was 9.4 cM. Flower color and pod tip shape were mapped and segregated at Mendelian ratios, as expected. The segregation ratio and linkage data analyses indicated that the determinacy growth habit was inherited as two independent and dominant genes, and a genetic model is proposed for this trait.; State of Sao Paulo Research Foundation (FAPESP); Brazilian National Council for Scientific and Technological Development (CNPq); FAPESP

Mapping of angular leaf spot resistance QTL in common bean (Phaseolus vulgaris L.) under different environments

Oblessuc, Paula Rodrigues; Baroni, Renata Moro; Garcia, Antonio Augusto Franco; Chioratto, Alisson Fernando; Carbonell, Sergio Augusto Morais; Camargo, Luis Eduardo Aranha; Benchimol, Luciana Lasry
Fonte: BIOMED CENTRAL LTD; LONDON Publicador: BIOMED CENTRAL LTD; LONDON
Tipo: Artigo de Revista Científica
Português
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Background: Common bean (Phaseolus vulgaris L.) is the most important grain legume for human diet worldwide and the angular leaf spot (ALS) is one of the most devastating diseases of this crop, leading to yield losses as high as 80%. In an attempt to breed resistant cultivars, it is important to first understand the inheritance mode of resistance and to develop tools that could be used in assisted breeding. Therefore, the aim of this study was to identify quantitative trait loci (QTL) controlling resistance to ALS under natural infection conditions in the field and under inoculated conditions in the greenhouse. Results: QTL analyses were made using phenotypic data from 346 recombinant inbreed lines from the IAC-UNA x CAL 143 cross, gathered in three experiments, two of which were conducted in the field in different seasons and one in the greenhouse. Joint composite interval mapping analysis of QTL x environment interaction was performed. In all, seven QTLs were mapped on five linkage groups. Most of them, with the exception of two, were significant in all experiments. Among these, ALS10.1(DG,UC) presented major effects (R-2 between 16% - 22%). This QTL was found linked to the GATS11b marker of linkage group B10, which was consistently amplified across a set of common bean lines and was associated with the resistance. Four new QTLs were identified. Between them the ALS5.2 showed an important effect (9.4%) under inoculated conditions in the greenhouse. ALS4.2 was another major QTL...

Black bean (Phaseolus vulgaris L.) as a protective agent against DNA damage in mice

Azevedo, L.; Gomes, J. C.; Stringheta, P. C.; Gontijo, AMMC; Padovani, C. R.; Ribeiro, L. R.; Salvadori, Daisy Maria Favero
Fonte: Elsevier B.V. Publicador: Elsevier B.V.
Tipo: Artigo de Revista Científica Formato: 1671-1676
Português
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This study was designed to evaluate the toxicogenetic or protective effect of cooked and dehydrated black beans (Phaseolus vulgaris L.) in bone marrow and peripheral blood cells of exposed mice. The frequency of micronuclei detected using the bone marrow erythrocyte micronucleus test and level of DNA lesions detected by the comet assay were chosen as end-points reflecting mutagenic and genotoxic damage, respectively. Initially, Swiss male mice were fed with a 20% black bean diet in order to detect mutagenic and genotoxic activity. However, no increase in the frequency of bone marrow micronucleated polychromatic erythrocytes (MN PCEs) or DNA lesion in leukocytes was observed. In contrast, received diets containing 1, 10 or 20% of black beans, a clear, but not dose-dependent reduction in the frequency of MN PCEs were observed in animals simultaneously treated with cyclophosphamide, an indirect acting mutagen. Similar results were observed in leukocytes by the comet assay. Commercial anthocyanin was also tested in an attempt to identify the bean components responsible for this protective effect. However, instead of being protective, the flavonoid, at the highest dose administered (50 mg/kg bw), induced primary DNA lesion, as detected by the comet assay. These data indicate the importance of food components in preventing genetic damage induced by chemical mutagens...

Efeito da deficiência de potássio sobre as atividades de glutamato desidrogenase e glutamato sintase em feijoeiro (Phaseolus vulgaris L.)

Gutierrez, L.E.; Crocomo, O.J.; Rossi, C.
Fonte: Universidade de São Paulo (USP), Escola Superior de Agricultura Publicador: Universidade de São Paulo (USP), Escola Superior de Agricultura
Tipo: Artigo de Revista Científica Formato: 125-134
Português
Relevância na Pesquisa
99.13468%
Foi estudado o efeito da deficiência de potássio sobre as atividades da glutamato desidrogenase (EC. 1.4.1.2) e glutamato sintase (EC. 2.6.1.53) em folhas de feijoeiro (Phaseolus vulgaris L.). Os resultados mostraram que a atividade específica da glutamato desidrogenase aumentou nas plantas deficientes em potássio nos dois cultivares estudados. Foi detectada redução na atividade de glutamato sintase nas plantas deficientes em potássio.; The effect of potassium deficiency on glutamate dehydrogenase(EC. 1.4.1.2) and glutamate synthase (EC. 2.6.1.53) activities in leaves of two cultivars of bean plants (Phaseolus vulgaris L.) was studied. The results showed an increase of glutamate dehydrogenase and a decrease of glutamate synthase activities in potassium deficient plants of the two cultivars studied.

Inheritance of growth habit detected by genetic linkage analysis using microsatellites in the common bean (Phaseolus vulgaris L.)

CAMPOS, Tatiana de; OBLESSUC, Paula Rodrigues; SFORCA, Danilo Augusto; CARDOSO, Juliana Morini Kupper; BARONI, Renata Moro; SOUSA, Adna Cristina Barbosa de; CARBONELL, Sergio Augusto Morais; CHIORATTO, Alisson Fernando; GARCIA, Antonio Augusto Franco; RUB
Fonte: SPRINGER Publicador: SPRINGER
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
98.68595%
The genetic linkage map for the common bean (Phaseolus vulgaris L.) is a valuable tool for breeding programs. Breeders provide new cultivars that meet the requirements of farmers and consumers, such as seed color, seed size, maturity, and growth habit. A genetic study was conducted to examine the genetics behind certain qualitative traits. Growth habit is usually described as a recessive trait inherited by a single gene, and there is no consensus about the position of the locus. The aim of this study was to develop a new genetic linkage map using genic and genomic microsatellite markers and three morphological traits: growth habit, flower color, and pod tip shape. A mapping population consisting of 380 recombinant F10 lines was generated from IAC-UNA x CAL143. A total of 871 microsatellites were screened for polymorphisms among the parents, and a linkage map was obtained with 198 mapped microsatellites. The total map length was 1865.9 cM, and the average distance between markers was 9.4 cM. Flower color and pod tip shape were mapped and segregated at Mendelian ratios, as expected. The segregation ratio and linkage data analyses indicated that the determinacy growth habit was inherited as two independent and dominant genes, and a genetic model is proposed for this trait.; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Absorção de metais pesados do lodo de esgoto pelo feijoeiro (Phaseolus vulgaris L.)

Miyazawa,Mário; Oliveira,Edson L. de; Parra,Mauro S.; Yamashita,Miyuki
Fonte: Instituto de Tecnologia do Paraná - Tecpar Publicador: Instituto de Tecnologia do Paraná - Tecpar
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/1998 Português
Relevância na Pesquisa
108.72561%
Toxicity and uptake of heavy metals of sewage sludge by beans (Phaseolus vulgaris L.) were evaluated in green house experiments. Treatments consisted of 1,0 ; 2,0 and 5,0% (m/m) of dry sewage sludge, collected from Londrina (Bom Retiro and ETE-Sul) and Curitiba (ETE-Belém and RALF). Bean ( variety IAPAR 57) was sown three times at 0, 120 and 240 days after the treatments have been applied. Contents of Cd, Cr, Co, Cu, Ni, and Pb in bean tissues cultivated with 5,0% (m/m) of all sewage sludge were similar to the control and Ba contents were reduced by increasing the quantity of sewage sludge in the soil. The Zn content in tissue bean incresed from 86 mg kg-1 of control to 462 mg kg-1 by applying 5% (m/m) of sewage sludge in soil, but plant beans did not show toxicity symptons. The addition of 5% (m/m) of sewage sludge increased Mn content in plants, from 193 mg kg-1 of control to 1.960 mg kg-1, showing toxity in bean leaves when the contents were more than 500 mg kg-1. The addition of sewage sludges in soils increased only available Zn carbonate and Cu organic species.

Water absorption, hard shell and cooking time of Common Beans (Phaseolus vulgaris L.).

CORRÊA, M. M.; CARVALHO, L. M. J. de; NUTTI, M. R.; CARVALHO, J. L. V. de; HOHN NETO, A. R.; RIBEIRO, E. M. G.
Fonte: African Journal of Food Science and Technology, v. 1, n. 1, p. 013-020, jul. 2010 Publicador: African Journal of Food Science and Technology, v. 1, n. 1, p. 013-020, jul. 2010
Tipo: Artigo em periódico indexado (ALICE)
Português
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Legumes play an important role in human nutrition, especially among low-income human groups in developing countries. Beans are particularly important in Brazil for two reasons: Brazil is the largest producer and consumer of grain legumes in the world and the fact that beans are a major source of protein for many people. The objective of this study was to evaluate the hard-shell percentage in seven common beans (Phaseolus vulgaris L) cultivars, by using the Burr cooking method before and after soaking. The following cultivars developed by Embrapa Rice and Beans, in Santo Antônio de Goiás ? GO, obtained from the same area and planting time (winter) were used: BRS Vereda (rosinha); BRS Timbó (roxinho); BRS Grafite (preto); BRS Radiante (rajado); BRS ? Pontal (carioca); BRS Marfim (mulatinho) and Jalo Precoce (jalo). The results revealed significant differences (p<0.05) among the cultivars in relation to hard-shell and cooking time (before and after soaking). The cultivar Jalo Precoce (jalo) presented the highest percentage of hard-shell (42%) and cooking time (67.5 minutes) without previous soaking. The cultivars BRS Timbó (roxinho); BRS Grafite (preto); BRS Pontal (carioca), and BRS Marfim (mulatinho) did not present hard-shell grains.; 2010

Efeito de níveis e método da adubação fosfatada no consórcio milho (Zea mays L.) e feijão (Phaseolus vulgaris L.).

CRUZ, J.C.; RAMALHO, M.A.P.L SANTOS, H.L.dos.
Fonte: In: REUNIÃO NACIONAL DE PESQUISA COM FEIJÃO (Phaseolus vulgaris L.) EM CONSÓRCIO, 3., 1984, Cariacica. Resumos... Cariacica: EMCAPA; Santo Antônio de Goiás: EMBRAPA-CNPAF, 1984. p. 31-32. Publicador: In: REUNIÃO NACIONAL DE PESQUISA COM FEIJÃO (Phaseolus vulgaris L.) EM CONSÓRCIO, 3., 1984, Cariacica. Resumos... Cariacica: EMCAPA; Santo Antônio de Goiás: EMBRAPA-CNPAF, 1984. p. 31-32.
Tipo: Resumo em anais de congresso (ALICE)
Português
Relevância na Pesquisa
98.75248%
1984

Respostas do consórcio milho (Zea mays L.) feijão (Phaseolus vulgaris L.) a diferentes níveis de distribuição do fósforo.

RAMALHO, M.A.P.; CRUZ, J.C.; CORREA, L.A.; SANTOS, H.L.dos.
Fonte: In: REUNIÃO NACIONAL DE PESQUISA COM FEIJÃO (Phaseolus vulgaris L.) EM CONSÓRCIO, 3., 1984, Cariacica. Resumos... Cariacica: EMCAPA; Santo Antônio de Goiás: EMBRAPA-CNPAF, 1984. p. 33-34. Publicador: In: REUNIÃO NACIONAL DE PESQUISA COM FEIJÃO (Phaseolus vulgaris L.) EM CONSÓRCIO, 3., 1984, Cariacica. Resumos... Cariacica: EMCAPA; Santo Antônio de Goiás: EMBRAPA-CNPAF, 1984. p. 33-34.
Tipo: Resumo em anais de congresso (ALICE)
Português
Relevância na Pesquisa
98.75248%
1984

Efeito de níveis de cobertura do solo sobre o manejo da irrigação do feijoeiro (Phaseolus vulgaris L.), no sistema plantio direto.

PEREIRA, A. L.; MOREIRA, J. A. A.; STONE, L. F.; CHIEPPE JUNIOR, J. B.; KLAR, A. E.
Fonte: In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRÍCOLA, 35., 2006, João Pessoa. Agroenergia e desenvolvimento tecnológico: programa final, caderno de resumos. João Pessoa: SBEA, 2006. Publicador: In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRÍCOLA, 35., 2006, João Pessoa. Agroenergia e desenvolvimento tecnológico: programa final, caderno de resumos. João Pessoa: SBEA, 2006.
Tipo: Resumo em anais de congresso (ALICE) Formato: p. 100
Português
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Este trabalho teve por objetivo estudar os efeitos da cobertura do solo sobre o manejo da irrigação do feijoeiro irrigado (Phaseolus vulgaris L.), no sistema plantio direto.; 2006

Soybean rust resistance sources and inheritance in the common bean (Phaseolus vulgaris L.).

SOUZA, T. L. P. O.; DESSAUNE, S. N.; MOREIRA, M. A.; BARROS, E. G.
Fonte: Genetics and Molecular Research, v. 13, n. 3, p. 5626-5636, 2014. Publicador: Genetics and Molecular Research, v. 13, n. 3, p. 5626-5636, 2014.
Tipo: Artigo em periódico indexado (ALICE)
Português
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98.80397%
Soybean rust (SBR), caused by the fungus Phakopsora pachyrhizi, has been reported in common bean (Phaseolus vulgaris L.) cultivars and elite lines that were infected under controlled and natural field conditions in South Africa, the United States, Argentina, and Brazil. Although SBR is currently not a top priority problem for the common bean crop, many bean breeders are concerned about this disease because of the high severity and virulence diversity of P. pachyrhizi and its broad host range. In this study, a set of 44 P. vulgaris genotypes were tested for resistance to P. pachyrhizi; these genotypes included resistance sources to several fungal common bean diseases, carioca-, black- and red-seeded Brazilian cultivars, and elite lines that were developed by the main common bean breeding programs in Brazil. Twenty-four SBR resistance sources were identified. They presented the reddish-brown (RB) lesion type, characterizing resistance reactions. In addition to the RB lesion type, the PI181996 line presented the lowest disease severity mean score, considering its associated standard error value. For this reason, it was crossed with susceptible lines to study the inheritance of resistance. The results support the hypothesis that resistance to SBR in PI181996 is monogenic and dominant. We propose that this SBR resistance gene...

Mapeamento de QTLs para teor de proteína em feijoeirocomum (Phaseolus vulgaris L.); Mapping QTLs for protein content in common beans (Phaseolus vulgaris L.)

LEÃO, Ariane Castro Mendes
Fonte: Universidade Federal de Goiás; BR; UFG; Mestrado em Biologia; Ciências Biolóicas Publicador: Universidade Federal de Goiás; BR; UFG; Mestrado em Biologia; Ciências Biolóicas
Tipo: Dissertação Formato: application/pdf
Português
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99.30026%
The common bean besides being one of the basic meals of brazilian´s population, it is one of the main products that provide protein in the nutritional diet from the society share which is economically less favorable. The identification of molecular markers linked to controlling genes of the protein content in common beans (Phaseolus vulgaris L.) is a very important tool to help breeding programs, raising the efficiency and agility. This way, this work was made with two main goals: a) to map SSR and RAPD markers linked to loci (QTLs) that control protein content in two generations of a segregating population of common beans and b) to compare detection procedures of markers linked to QTLs using the ANOVA method and the process of interval mapping. For that reason, 94 families were taken from the F2 generation and 90 families from the F2:3 generation derived from the cross of genitors CNFC 7812 e CNFC 8056. Results indicated that there is the possibility of identifying molecular markers related to protein content in common beans, utilizing both detection procedures. The ANOVA method identified a greater number of QTLslinked markers than the process of interval mapping in both generations. There was coincidence between the identified loci obtained with the two methods for each generation. Loci that were associated with protein content were different for the F2 and F2:3 generations. However...

Caracterização fenotípica de acessos crioulos de Phaseolus vulgaris L. do tipo carioca baseada em análise multivariada; Phenotypic characterization creole accessions of Phaseolus vulgaris L. commercialtype cariocabased on multivariate analysis

Moçambique, Pedro Antônio
Fonte: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em Agronomia (EAEA); Escola de Agronomia e Engenharia de Alimentos - EAEA (RG) Publicador: Universidade Federal de Goiás; Brasil; UFG; Programa de Pós-graduação em Agronomia (EAEA); Escola de Agronomia e Engenharia de Alimentos - EAEA (RG)
Tipo: Tese de Doutorado Formato: application/pdf
Português
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99.26296%
Common beans (Phaseolus vulgaris L.) are widely cropped in Brazil, the largest world consumer. P. Vulgaris species is an important source of proteins in the human diet in developing countries in tropical and sub tropical regions, especially in the Americas and West Africa. To know the genetic diversity among commercial and Creole cultivars is very useful to breeders because it allows an adequate organization of the genetic resources and a better exploitation of the available genetic diversity. The objective of this work was to identify the genetic diversity among and into Carioca type common bean accesses stored in the Active Germplasm Bank at Embrapa Arroz e Feijão. The experimental design was a completely randomized bloc with three replicates and carried out at the same institution in the municipality of Santo Antônio de Goiás with the following geographical coordinates: 16.30´S; 49.17´W at 814 m altitude. The evaluation was performed based on fifteen morphoagronomic qualitative descriptors and fifteen quantitative descriptors as well. Nine out of fifteen descriptors were uniform in all accesses. The quantitative descriptors were analyzed using canonical variate analysis; the agglomerative clustering method of Ward, and the univariate variance analysis associated with the Tukey test to evaluate the effect of clustering on the variables and to compare the means of the groups among them. Through the canonical variate analysis it was possible to discard three variables with little contribution to the total phonotypical variability among the accesses. Taking in account the twelve variables left...

Propriedades da transcarbamilase de ornitina parcialmente purificada de folhas de feijoeiro (Phaseolus vulgaris L.); Partial purification and properties of ornithine transcarbamylase from bean leaves (Phaseolus vulgaris L.)

Gutierrez, L.E.; Crocomo, O.J.
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/01/1989 Português
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Transcarbamilase de ornitina (E.C. 2.1.3.3) extraída de folhas de feijoeiro (Phaseolus vulgaris L. cv. carioca) com 31 dias de maturidade foi parcialmente purificada com sulfato de amônio em pH 7,2 e 7,8. A enzima apresentou as seguintes propriedades: pH ótimo 7,8, temperatura ótima 40°C, Constante de Michaelis para ornitina de 3,18mM e para carbamil-fosfato de 3,93mM.; Ornithine transcarbamylase (E.C. 2.1.3.3) was extracted from leaves of bean plants (Phaseolus vulgaris L. cv. carioca) and partially purified by ammonium sulfate precipitation at pH 7,2 and 7.8. The enzyme preparation showed an optimum pH of 7.8 and Km of 3.18mM for ornithine and of 3.93mM for carbamil-phosphate.

Efeito da deficiência de potássio sobre as atividades de glutamato desidrogenase e glutamato sintase em feijoeiro (Phaseolus vulgaris L.); Effect of potassium deficiency on glutamate dehydrogenase and glutamate synthase activities in bean leaves (Phaseolus vulgaris L.)

Gutierrez, L.E.; Crocomo, O.J.; Rossi, C.
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/01/1989 Português
Relevância na Pesquisa
99.28086%
Foi estudado o efeito da deficiência de potássio sobre as atividades da glutamato desidrogenase (EC. 1.4.1.2) e glutamato sintase (EC. 2.6.1.53) em folhas de feijoeiro (Phaseolus vulgaris L.). Os resultados mostraram que a atividade específica da glutamato desidrogenase aumentou nas plantas deficientes em potássio nos dois cultivares estudados. Foi detectada redução na atividade de glutamato sintase nas plantas deficientes em potássio.; The effect of potassium deficiency on glutamate dehydrogenase(EC. 1.4.1.2) and glutamate synthase (EC. 2.6.1.53) activities in leaves of two cultivars of bean plants (Phaseolus vulgaris L.) was studied. The results showed an increase of glutamate dehydrogenase and a decrease of glutamate synthase activities in potassium deficient plants of the two cultivars studied.

Atividades de transaminase glutamico-oxaloacético e transcarbamilase de ornitina em folhas de feijoeiro (Phaseolus vulgaris L.) afetadas pela deficiência de potássio; Ornithine transcarbamylase and glutamic-oxaloacetic transaminase activities of bean leaves (Phaseolus vulgaris L.) as affected by potassium deficiency

Gutierrez, L.E.; Crocomo, O.J.
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/01/1988 Português
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99.28086%
Folhas de feijoeiro (Phaseolus vulgaris L.) normais e deficientes em potássio dos cultivares Rosinha Precoce e Goiano Precoce foram analisadas para determinação das atividades de transaminase glutâmico-oxaloacético (E.C. 2.6.1.1) e transcarbamilase de ornitina (E.C. 2.1.3.3). Em plantas deficientes em potássio houve aumento na atividade das duas enximas estudadas e nos dois cultivares. Esses resultados explicariam o acúmulo de citrulina e arginina em plantas deficientes em potássio devido a maior atividade da transcarbamilase de ornitina, que possivelmente seria um mecanismo de reduzir a toxidez por amônia.; Leaves of bean plants (Phaseolus vulgaris L.) deficient in potassium and the proper control of two cultivars were analysed in relation to ornithine transcarbamylase (E.C. 2.1.3.3) and glutamic-oxaloacetic transaminase (E.C. 2.6.1.1) activities. Leaves of bean plants grown under potassium deficiency showed higher activities of both enzymes. These dada suggest that the accumulation of citrulline and arginine in potassium deficient plants was due to the higher activity of ornithine transcarbamylase, probably as a mechanism to reduce ammonium toxicity.

Crecimiento, índice de cosecha y rendimiento de frijol (Phaseolus vulgaris L.) en unicultivo y asociado con girasol (Helianthus annuus L.)

Morales-Rosales,EJ; Escalante-Estrada,JAS; López-Sandoval,JA
Fonte: Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado Publicador: Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2008 Português
Relevância na Pesquisa
98.77188%
El objetivo de la presente investigación fue estimar el crecimiento, la producción de biomasa, el rendimiento y sus componentes principales en tres cultivares de frijol (Phaseolus vulgaris L.) en unicultivo y asociados con girasol (Helianthus annuus L.). La investigación se realizó durante la primavera de 2002 bajo condiciones de temporal en Montecillo, Estado de México. Las variables evaluadas fueron: fenología del cultivo, número de hojas m-2 (NHV), índice de área foliar (IAF), tasa de asimilación neta (TAN), biomasa total (BT), índice de cosecha (IC), número de racimos m-2 (NR), número de vainas m-2 (NV), número de semillas vaina-1 (NSV), número de semillas m-2 (NS), peso de cien semillas (PCS) y rendimiento de semilla m-2 (REN). La evaluación se realizó bajo un diseño experimental de bloques completos al azar con cuatro repeticiones en arreglo factorial, donde los factores de estudio fueron: cultivares de frijol y sistemas de siembra. Entre el rendimiento y sus principales componentes se realizó un análisis de correlación lineal simple. En el factor cultivares se detectaron diferencias estadísticas (p = 0.001) en todas las variables evaluadas, mientras que el factor sistemas sólo presentó diferencias significativas para las variables NR...

Contenido de aflatoxinas y proteína en 13 variedades de frijol (Phaseolus vulgaris L.)

Peña-Betancourt,Silvia Denise; Conde-Martínez,Víctor
Fonte: Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Publicador: Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2012 Português
Relevância na Pesquisa
98.85145%
En México el frijol (Phaseolus vulgaris L.) es una semilla leguminosa de elevado consumo (11 kg per cápita anualmente), por lo que su cultivo es amplio en diferentes regiones. En este estudió se determinó la presencia de aflatoxinas en ocho variedades de frijol común y cinco variedades de frijol mejorado; además del contenido de proteína y humedad. En todas las variedades evaluadas el contenido de humedad mostró grandes variaciones (6 a 16%), encontrándose 16% de las variedades estudiadas fuera de la normatividad (<12%). El mayor contenido de proteína se detectó en las variedades de frijol mejoradas (26.1%) y el más bajo en las variedades comerciales (19.8%, ±3.09) y silvestres (20.78%±1.93). Todas las variedades presentaron aflatoxinas en un promedio de 7.46 ng g-¹ y un intervalo de 5 a 13 ng g-¹. El nivel más alto de contaminación se observó en las variedades de frijol mejoradas (9.2 ±2.9 ng g-¹), seguidas de las variedades comerciales 7.25 ±0.95 ng g-¹ y las variedades silvestres 6 ±1 ng g-¹. Se detectaron taninos en las variedades de frijol silvestre en un nivel de 0.44% ±0.13. Los resultados obtenidos confirman la presencia de compuestos tóxicos y antinutricionales en las diferentes variedades de frijol común y silvestre...