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| Registros recuperados: 18 | |
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| Voll,Elemar; Adegas,Fernado Storniolo; Gazziero,Dionísio Luís Pisa; Brighenti,Alexandre Magno; Oliveira,Maria Cristina Neves de. |
| O objetivo desta pesquisa foi determinar o número de amostras necessárias para estimar com precisão aceitável a quantidade de sementes no solo e a flora de plantas daninhas emergentes, em áreas experimentais e de lavoura, para auxiliar na tomada de decisão das estratégias de manejo das plantas daninhas. A amostragem do solo para quantificação do banco de sementes foi feita com trado tubular de 5,0 cm de diâmetro, na profundidade de 0 a 10 cm. A flora emergente foi contada por meio de um gabarito de ferro nas dimensões de 0,5x0,5 m, de forma aleatória na área. O número de amostras necessário foi estimado em razão da média de sementes da amostra, para uma determinada precisão (CV = 20% ou 40%). Foi estimado que, nas áreas experimentais, para médias de 10 a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Banco de sementes do solo; Controle de planta daninha; Amostra de solo; Método. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000200007 |
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| Silva,Débora Mello da; Bueno,Adeney de Freitas; Andrade,Karine; Stecca,Cristiane dos Santos; Neves,Pedro Manuel Oliveira Janeiro; Oliveira,Maria Cristina Neves de. |
| ABSTRACT: We studied Spodoptera frugiperda development using different food sources in the laboratory and field. Newly hatched larvae were fed soybean, cotton, maize, wheat, and oat leaves. An artificial diet was used as the control. Duration of pre-pupal, pupal, and larva-adult period, pupal weight, sex ratio, survival, larva feeding preferences, oviposition preferences, and nutritional quality of different hosts were evaluated. Insects fed on wheat showed the shortest larva-adult period. The insects fed on cotton and soybean had longer larval development cycles and pupae of lower weight. Feeding preference was evident for third instar larvae and did not differ between wheat, oat, maize, and soybean, which were the preferred hosts. Moths oviposited to a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural entomology; Feeding behavior; Insect-plant interactions. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000100018 |
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| Ferreira,Márcia Pires; Oliveira,Maria Cristina Neves de; Mandarino,José Marcos Gontijo; Silva,Josemeyre Bonifácio da; Ida,Elza Iouko; Carrão-Panizzi,Mercedes Concórdia. |
| The objective of this work was to analyze changes in the isoflavone profile, determined by high performance liquid chromatography, at different processing stages and after refrigeration of tempeh. For tempeh production, clean soybean grains from cultivars BR 36 (low isoflavone content) and IAS 5 (high) were dehulled, and the separated cotyledons were hydrated and then cooked in boiling water for 30 min. Spores of the fungus Rhizopus microsporus var. oligosporus were inoculated in the cooked and cooled cotyledons, and incubated at 32ºC for 6, 12, 18, and 24 hours in perforated polypropylene bags, for fermentation. The resulting tempeh was stored at 4ºC for 6, 12, 18, and 24 hours. After 24-hour fermentation, isoflavone glucosides were 50% reduced, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rhizopus microsporus var. oligosporus; Aglycone; Fermentation; Functional food; High performance liquid chromatography; Malonyl. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001100018 |
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| Moraes,Larissa Alexandra Cardoso; Moraes,Vicente Haroldo de Figueiredo; Moreira,Adônis; Cordeiro,Everton Rabelo; Oliveira,Maria Cristina Neves de. |
| O objetivo deste trabalho foi avaliar o desempenho de 11 clones de copa de seringueira de Hevea pauciflora × H. guianensis, H. guianensis × H. pauciflora, H. pauciflora × H. rigidifolia e H. pauciflora resistentes ao fungo Microcyclus ulei, causador do mal-das-folhas, sobre o painel de CNS AM 7905 (seleção primária de H. brasiliensis), durante 14 anos nas condições edafoclimáticas da Amazônia tropical úmida. Foram avaliados: produtividade de borracha seca durante sete anos, aspectos anatômicos, características fisiológicas do látex, estado nutricional das plantas e métodos de sangria (oriental e amazônica). Os clones de copa CPAA C 01, 06 e 45 produziram, na média, mais de 1,4 t ha- 1 ano- 1 de borracha seca, seguido pelos clones CPAA C 13, 14, 15, 16 e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea spp.; Microcyclus ulei; Produção; Estado nutricional; Aspectos anatômicos; Características fisiológicas do látex. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300010 |
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| Kuss,Cassiano Carlos; Roggia,Rejane Cristina Roppa Kuss; Basso,Claudir José; Oliveira,Maria Cristina Neves de; Pias,Osmar Henrique de Castro; Roggia,Samuel. |
| Resumo: O objetivo deste trabalho foi avaliar o desempenho de inseticidas autorizados emergencialmente para o controle de Helicoverpa armigera (Lepidoptera: Noctuidae) em soja. Sete inseticidas foram pulverizados em campo e, após 24 horas, folhas do ponteiro foram coletadas e oferecidas para lagartas de 2o instar em laboratório. Lagartas do 4o instar receberam a última folha trifoliolada que se encontrava completamente expandida no momento da pulverização. Outro grupo foi exposto a folhas coletadas a partir de 72 horas da pulverização. Em campo, seis inseticidas foram pulverizados e, em seguida, as plantas foram infestadas com lagartas de 2o e 3o instar. No primeiro estudo, flubendiamida, clorantraniliprole, clorfenapir, indoxacarbe e metoxifenozida... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Ameaça fitossanitária; Heliothinae; Manejo integrado de pragas; Praga invasora; Tempo letal.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000500527 |
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| Pinheiro,Victor dos Reis; Seixas,Claudine Dinali Santos; Godoy,Cláudia Vieira; Soares,Rafael Moreira; Oliveira,Maria Cristina Neves de; Almeida,Álvaro Manuel Rodrigues. |
| The objective of this work was to evaluate the effect of moisture and temperature on the development of Sclerotium rolfsii on soybean, corn, and wheat straw. Wheat straw produced the lowest number of sclerotia. Intermediate soil moisture level (70% of field capacity), and temperatures ranging between 25-30ºC favored sclerotia development. No sclerotia were formed at temperatures between 30-35ºC, on any type of straw. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Glycine max; Crop rotation; No-tillage; Sclerotium blight. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000300014 |
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| Ribeiro,Mara Lucia Luiz; Ida,Elza Iouko; Oliveira,Maria Cristina Neves de. |
| Este trabalho foi conduzido para avaliar o efeito da germinação sobre os constituintes antinutricionais da soja, ácido fítico, P total e inibidores de tripsina, que interferem na utilização de proteínas e outras substâncias. A diminuição no aproveitamento de nutrientes resulta em inibição de crescimento, hipoglicemia ou danos a tecidos animais. Para os ensaios foram utilizadas as cultivares de soja (Glycine max (L.) Merrill ) BR-13 e Paraná. As sementes foram incubadas em câmara de germinação a 25°C e 100% de umidade, de 0 a 72 horas, com coleta de amostras em intervalos eqüidistantes de seis horas. A cultivar Paraná apresentou teores superiores de ácido fítico, P total e inibidores de tripsina, em relação à cultivar BR-13. As análises de variância e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Constituintes antinutricionais. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000100005 |
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| Carrão-Panizzi,Mercedes Concórdia; Berhow,Mark; Mandarino,José Marcos Gontijo; Oliveira,Maria Cristina Neves de. |
| The objective of this work was to evaluate isoflavone concentrations in seeds of different Brazilian soybean cultivars grown in a range of locations and environmental conditions in Brazil. Seeds of 233 cultivars grown in Ponta Grossa, PR, Brazil, during the 2001/2002 soybean season, and of 22 cultivars sown in different locations of Brazilian Northeast, Southeast on South regions were analyzed for total isoflavones, including daidzin, glycitin, genistin and acetylgenistin. The total isoflavones ranged from 12 mg 100 g-1 (cv. Embrapa 48) to 461 mg 100 g-1 (cv. CS 305) among the 233 cultivars grown in Ponta Grossa, and the differences among them are due to genetic effects since all cultivars were grown and collected at the same locatation and year. This is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Isoflavones; Sowing location; Soybean grains; Soybean cultivars; Soyfood. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001100011 |
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| Leite,Regina Maria Villas Bôas de Campos; Oliveira,Maria Cristina Neves de. |
| Abstract:The objective of this work was to evaluate the suitability of the multivariate method of principal component analysis (PCA) using the GGE biplot software for grouping sunflower genotypes for their reaction to Alternaria leaf spot disease (Alternariaster helianthi), and for their yield and oil content. Sixty-nine genotypes were evaluated for disease severity in the field, at the R3 growth stage, in seven growing seasons, in Londrina, in the state of Paraná, Brazil, using a diagrammatic scale developed for this disease. Yield and oil content were also evaluated. Data were standardized using the software Statistica, and GGE biplot was used for PCA and graphical display of data. The first two principal components explained 77.9% of the total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternariaster helianthi; Helianthus annuus; Disease resistance; Principal component analysis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000800649 |
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| Stolf-Moreira,Renata; Lemos,Eliana Gertrudes de Macedo; Abdelnoor,Ricardo Vilela; Beneventi,Magda Aparecida; Rolla,Amanda Alves Paiva; Pereira,Selma dos Santos; Oliveira,Maria Cristina Neves de; Nepomuceno,Alexandre Lima; Marcelino-Guimarães,Francismar Corrêa. |
| The objective of this work was to validate, by quantitative PCR in real time (RT-qPCR), genes to be used as reference in studies of gene expression in soybean in drought-stressed trials. Four genes commonly used in soybean were evaluated: Gmβ-actin, GmGAPDH, GmLectin and GmRNAr18S. Total RNA was extracted from six samples: three from roots in a hydroponic system with different drought intensities (0, 25, 50, 75 and 100 minutes of water stress), and three from leaves of plants grown in sand with different soil moistures (15, 5 and 2.5% gravimetric humidity). The raw cycle threshold (Ct) data were analyzed, and the efficiency of each primer was calculated for an overall analysis of the Ct range among the different samples. The GeNorm application was used to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Expression stability; RT-qPCR; Water deficit. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000100008 |
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| Carrão-Panizzi,Mercedes Concórdia; Silva,Bruna dos Santos; Leite,Rodrigo Santos; Godoy,Ronoel Luiz de Oliveira; Santiago,Manuela Cristina Pessanha de Araujo; Felberg,Ilana; Oliveira,Maria Cristina Neves de. |
| Abstract: The objective of this work was to determine the oil, protein, fatty acid, isoflavone, and anthocyanin contents in soybean grains of different breeding lines and maturity stages. Evaluations were performed for the chemical profiles of black- (BRM09-50995) and of yellow-seed-coat (BRM11-51428 and BRM08-50643) breeding lines, harvested at the R6 (immature seeds), R7 (physiological maturity), and R8 (full maturity) maturity stages. Oil and protein contents increased from the R6 to the R8 stage, and BRM11-51428 showed the highest protein content. Palmitic, stearic, and linolenic fatty acids were higher at R6, and linoleic and oleic acids were higher at R7 and R8, respectively. At the R8 growth stage, BRM11-51428 and BRM 09-50995 showed the highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Aglucone; Breeding line; Glucoside; Oil; Protein. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103901 |
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| Stolf,Renata; Medri,Moacyr Eurípedes; Pimenta,José Antônio; Boeger,Maria Regina Torres; Dias,Jaqueline; Lemos,Noélle Giacomini; Oliveira,Maria Cristina Neves de; Brogin,Rodrigo Luís; Yamanaka,Naoki; Neumaier,Norman; Farias,José Renato Bouça; Nepomuceno,Alexandre Lima. |
| In a greenhouse experiment, morpho-anatomical and micromorphometrical analyses of two soybean cultivars, MG/BR46 (Conquista) and BR16-tolerant and sensitive to drought, respectively-were used to study their water-deficit-tolerance strategies. Drought treatments were applied at reproductive stages from R2 to R7, where evaluations were conducted at 30 days and 45 days after stress started, respectively. The total length of Conquista plants (shoot + root) was greater than of BR16 plants. Pod dry weight was adversely affected due to the lack of moisture, decreasing productivity even of Conquista plants. Both the cultivars had normal development of root hairs; however, it was observed a decrease in the cortex:central cylinder ratio in BR16 stressed for 30 days,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Leguminous; Drought; Root. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600002 |
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| Koga,Lucimara Junko; Bowen,Charles Roger; Godoy,Claudia Vieira; Oliveira,Maria Cristina Neves de; Hartman,Glen Lee. |
| The objective of this work was to evaluate the genetic diversity among Sclerotinia sclerotiorum isolates from Brazil and the USA, assess their aggressiveness variability, and verify the existence of an isolate-cultivar interaction. Isolate variability was determined by mycelial compatibility grouping (MCG), and isolate aggressiveness by cut-stem inoculations of soybean cultivars. Two experiments for MCGs and two for aggressiveness were conducted with two sets of isolates. The first set included nine isolates from the same soybean field in Brazil and nine from the Midwest region of the USA. The second set included 16 isolates from several regions of Brazil and one from the USA. In the first set, 18 isolates formed 12 different MCGs. In the second set, 81%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Sclerotinia stem rot; Disease resistance; Screening of cultivars; White mold. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000400265 |
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| Balbinot Junior,Alvadi Antonio; Oliveira,Maria Cristina Neves de; Franchini,Julio Cezar; Debiasi,Henrique; Zucareli,Claudemir; Ferreira,André Sampaio; Werner,Flavia. |
| Abstract: The objective of this work was to evaluate how branch and stem variables contribute to grain yield in individual soybean (Glycine max) plants, cultivated at different planting densities, in a modern cultivar with indeterminate growth type. A field experiment was carried out during the 2013/2014 and 2014/2015 crop seasons, in a randomized complete block design with 12 replicates, using the cultivar NK7059 RR at four planting densities: 135, 235, 315, and 440 thousand plants per hectare. Grain yield per plant was evaluated and represented phenotypic plasticity, while the number of branches per plant, percentage of grain production in branches, and separate yield components from branches and stems were considered as the independent variables. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Plant density; Principal component analysis; Stepwise regression; Yield components. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000901038 |
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| Oda,Sandra Helena Inoue; Nepomuceno,Alexandre Lima; Ledur,Mônica Corrêa; Oliveira,Maria Cristina Neves de; Marin,Silvana Regina Rockenbach; Ida,Elza Iouko; Shimokomaki,Massami. |
| Total RNA isolated from Pectoralis major muscle from PSE (L*24h>53.0, pH<5.8) and non-PSE (44<"L*24h>"53) meats of two phenotypically distinct chicken lines, broiler and layer, was used to investigate the α-ryr and β-ryr gene expression by real-time RT-PCR approach. Mean relative quantification (RQ) values were lower (p<0.05) for β-ryr in PSE chickens from both lines when compared to non-PSE chickens, while there was no difference (p>0.05) in α-ryr gene expression regardless of line studied. The β-ryr RQ results suggested that in PSE samples an alteration might occur in the regular ratio (1:1) of α-RyR/β-RyR normally found in avian muscles. These results provided the first evidence of PSE meat occurrence as a result of the differential... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malignant hyperthermia; Poultry; Gene expression; Real time PCR. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600024 |
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| Registros recuperados: 18 | |
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