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Search Results: 1 - 10 of 446389 matches for " Ir? P;Andrade Júnior "
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Avalia??o de silagens de ramas de batata-doce
Figueiredo, José Altair;Andrade Júnior, Valter C de;Pereira, Rosana Cristina;Ribeiro, Karina G;Viana, Daniel José S;Neiva, IrP;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000400024
Abstract: the objective of this study was to select potential clones of sweet potato for animal feeding purposes. the experiment was carried out in a randomized block design with four replications. eleven clones bd-06, bd-25, bd-15, bd-38, cambraia, bd-31-to, bd-67, bd-45, bd-42, bd-54 and the cultivar brazlandia rosada belonging to germplasm bank of the federal university of vales do jequitinhonha and mucuri (ufvjm) were evaluated. we estimated the dry matter content and the productivity of green and dry mass of the vine. the traits ph, dry matter, crude protein phosphorus, calcium and sodium were estimated in the evaluation of silages quality. there was no significant difference in productivity of green mass and dry mass among the clones of sweet potato. the obtained silages had sufficient levels of crude protein (11.59%), neutral detergent fiber (31.98 to 39.68%), acid detergent fiber (29.65 to 35.45%) and total digestible nutrients (62.90 to 66.91%) proving the potential use of the sweet potato vine as silage in animal feeding.
Selection of sweet potato clones for the region Alto Vale do Jequitinhonha
Andrade Júnior, Valter C de;Viana, Daniel JS;Fernandes, José SC;Figueiredo, José A;Nunes, Ubirajara R;Neiva, IrP;
Horticultura Brasileira , 2009, DOI: 10.1590/S0102-05362009000300024
Abstract: an experiment was carried out from december 2005 to july 2006, in the universidade federal dos vales do jequitinhonha e mucuri (ufvjm), in diamantina, minas gerais state, brazil, aiming at selecting sweet potato clones for the alto vale do jequitinhonha. we evaluated nine clones from the ufvjm germplasm bank, using cultivars brazlandia branca, brazlandia roxa, and princesa as controls. the experimental design was blocks at random, with four replications. plants were harvested seven months after transplanting. we assessed the fresh mass yield of vines and roots, as well as root shape and resistance to soil insects. genotypes did not differ from each other for the fresh mass yield of vines (ranging from 3.81 to 11.76 t ha-1). the total yield of roots ranged from 22.0 to 45.4 t ha-1 and clones bd-06, bd-113-to, bd-15, bd-38, bd-25, bd-61, and cultivar princesa had statistically the highest figures. however, only clone bd-06 significantly overcame the control cultivars brazlandia branca and brazlandia roxa. clone bd-06 had also the highest commercial yield of roots (38.58 t ha-1), statically similar to most of the other clones and cultivar princesa (25.87 t ha-1), but superior to cultivars brazlandia branca and brazlandia roxa. most of the clones tested, including clone bd-06, produced good shaped roots and were resistant to soil insects. considering our results, clone bd-06 stood out as a good option for growing sweet potato in the upper valley of jequitinhonha.
Características produtivas e qualitativas de ramas e raízes de batata-doce
Andrade Júnior, Valter C de;Viana, Daniel José S;Pinto, Nísia AVD;Ribeiro, Karina G;Pereira, Rosana Cristina;Neiva, IrP;Azevedo, Alcinei M;Andrade, Paulo César de R;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000400004
Abstract: sweet potato is a versatile vegetable which can be used both as human and animal food. the relatively easy and inexpensive cultivation of this vegetable associated with the crop adaptability to several conditions of soil and climate enable the production of sweet potato by family farmers. the objective of this research was to evaluate production of fresh and dry mass of vines for animal nutrition and productivity and storage quality of roots for human food of sweet potato clones. the experimental design was randomized blocks, containing twelve clones and four replications. sweet potato clones from ufvjm germplasm bank were tested along with the control cultivars brazlandia rosada and brazlandia roxa, harvested six months after planting date. we evaluated the productivity of fresh and dry matter of vines and yield and quality of roots. the best clone was bd-45 with a high yield of fresh mass, dry matter and total and commercial roots, with values of 19.7; 3.3; 32.9 and 29.5 t ha-1, respectively. most genotypes presented roots near the ideal format for the market and good resistance to soil insects, with values near to grade 2.0. significant differences were observed among genotypes for the content of starch, total and reducing sugars. the genotypes showed similar chemical composition, except for the ash content. clones bd-67 and bd-56 showed higher levels of ash than cambraia, and similar to other clones.
Caracteriza??o morfológica de acessos de batata-doce do banco de germoplasma da UFVJM, Diamantina
Neiva, IrP;Andrade Júnior, Valter C de;Viana, Daniel José S;Figueiredo, José A;Mendon?a Filho, Carlos V;Parrella, Rafael A da Costa;Santos, Jo?o B;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000400016
Abstract: sweet potato accesses from the germplasm bank of the universidade federal dos vales do jequitinhonha e mucuri, diamantina, minas gerais state, brazil were characterized. the experiment was carried out between february and november 2006, using a randomized blocks design, with 65 treatments and three replications, totaling 195 plots. the evaluation of the vegetative part was carried out three months after planting and the roots were harvested nine months after planting. based on the dendrogram of morphologic differences we observed a great morphologic variability on the accesses. the characteristics of the vegetative part showed significant differences among the clones, by scott knot test at 5% probability, differently from those of the roots.
Role of allelochemicals and trichome density in the resistance of tomato to whitefly Papel de aleloquímicos e densidade de tricomas na resistência de tomateiro à mosca-branca
Ir? Pinheiro Neiva,Valter Carvalho de Andrade Júnior,Wilson Roberto Maluf,Celso Mattes Oliveira
Ciência e Agrotecnologia , 2013,
Abstract: In Brazil, the tomato is cultivated in almost all geographic regions even though its yield is significantly reduced by pests and diseases. Among these pests and diseases, whitefly is a major problem that causes direct and indirect damage due to its role in transmission of geminiviruses. The aim of the present study was to compare the degree of resistance to the silverleaf whitefly of tomato plant lines rich in acyl sugars (AS), zingiberene (ZGB), and 2-tridecanone (2-TD) and to establish whether selection for strains with higher densities of glandular trichomes promotes sufficient resistance to this insect pest. The investigated lines were developed by performing back-crossings in tomato (Solanum lycopersicum) from the interspecific crossing of S. lycopersicum x S. habrochaites var. glabratum 'PI 134417'. Lines rich in AS, ZGB, and 2-TD were tested for their levels of resistance to B. tabaci biotype B. Two tomato plant lines (TOM-584 and TOM-679) with normal AS levels and one wild specimen (PI 134417) with high 2-TD content were used as controls. TOM-687, ZGB-703, and TOM-622 were less preferred by B. tabaci for oviposition, and nymphs exhibited a poorer survival rate on those plant lines than on the susceptible controls, TOM-584 and TOM-679. Allelochemical-rich lines exhibited pest resistance, whereas the controls did not, and the allelochemical-rich lines did not differ significantly from each other in the level of resistance. The results show that the development of tomato plant lines rich in 2-TD, ZGB and AS is an effective option for indirect selection for resistance to B. tabaci biotype B. All lines selected based on high trichome density except for BPX-365F-751-05-01-03 exhibited fewer nymphs than the susceptible controls, indicating that selection for more glandular trichomes was generally effective in promoting increased resistance to the silverleaf white flay. No Brasil, o tomate é cultivado em praticamente todas as regi es, embora seu rendimento seja reduzido por pragas e doen as. A mosca-branca, comumente presente, causa danos diretos e indiretos, devido à transmiss o de geminiviros. O objetivo do presente trabalho foi comparar o grau de resistência à mosca branca de linhagens de tomateiro ricas em acila úcares (AA), zingibereno (ZGB) e 2-tridecanona (2-TD) e verificar se a sele o de linhagens com base em tricomas glandulares é efetiva no sentido de promover níveis satisfatórios de resistência. Essas linhagens foram obtidas através de retrocruzamentos em tomateiro Solanum lycopersicum, a partir do cruzamento interespecífico S. lycopersicum x
Espa?o e distin??o social: o catolicismo na Província de Sergipe
Andrade Júnior, Péricles Morais de;
História (S?o Paulo) , 2010, DOI: 10.1590/S0101-90742010000100007
Abstract: this article aims to analyze the social distinctions incorporated in the catholicism in the province of sergipe del rey during the nineteenth century. the analysis will be centered in the criteria of admission of two active religious brotherhoods in the city of estancia in sergipe, brazil. the research shows that there was a population divided between the brotherhoods of the blessed sacrament and our lady of the rosary, reflections of a more diversified social hierarchy about the criteria of race, wealth and social prestige. the space presented meanings in so far as the city reproduced, symbolically, the society and its organization in social strata. in other words, we notice that the catholic religious field in the population of estancia followed the mechanisms of expression of the segregation and presented itself as representative of the oppositions between the social groups, which were characterized by associations which defined the social position and the tastes of their members.
Resistance of tomato strains to the moth Tuta absoluta imparted by allelochemicals and trichome density
Oliveira, Celso Mattes de;Andrade Júnior, Valter Carvalho de;Maluf, Wilson Roberto;Neiva, Ir? Pinheiro;Maciel, Gabriel Mascarenhas;
Ciência e Agrotecnologia , 2012, DOI: 10.1590/S1413-70542012000100006
Abstract: we examined the resistance of improved tomato strains rich in 2-tridecanone (2-td), zingiberene (zgb) and acyl sugars (aa) to the tomato moth, tuta absoluta. we also studied whether selection for strains with higher densities of glandular trichomes, and thus presumably strains with higher concentrations of 2-tridecanone, was effective in promoting greater resistance to the moth. the tom-584 and tom-679 strains were used as susceptible controls, which have normal concentrations of the three allelochemicals. the improved strain tom-687, which has a high aa content, has a widely documented resistance and was used as a standard resistant strain. the wild strain pi134417, which is resistant by means of its high 2-td content, was also used as a standard resistant strain. the experiment was installed in a greenhouse with a completely randomized design. the wild strain pi 134417 was confirmed as being highly resistant. tom-622 (rich in 2-td), zgb-703 (rich in zgb), and tom-687 (rich in aa) showed significant reductions in the oviposition rate of the tomato moth, damage to the plants, injury to the leaflets, and the percentage of leaflets attacked in comparison with the control strains (tom-584 and tom-679). the levels of resistance to the moth for the tom-622, zgb-703, and tom-687 strains were similar. in general, the genotypes with higher densities of glandular trichomes had greater resistance than the susceptible controls, with the strain bpx-367d-238-02 being particularly notable in its resistance.
Potencial de silagens de ramas de batata-doce para alimenta??o animal
Viana, Daniel José Silva;Andrade Júnior, Valter Carvalho de;Ribeiro, Karina Guimar?es;Pinto, Nísia Andrade Villela Dessimoni;Neiva, Ir? Pinheiro;Figueiredo, José Altair;Lemos, Vinícius Teixeira;Pedrosa, Carlos Enrrik;Azevedo, Alcinei Místico;
Ciência Rural , 2011, DOI: 10.1590/S0103-84782011000800027
Abstract: the objective was to evaluate the potential of silage derived from different clones of sweet potato for animal feed. the study was conducted at forquilha farm located in batatal district, mg diamantina in the period from 23/12/2007 to 23/06/2008. the experiment was conducted in split plot design in a randomized complete block. it was evaluated the green and dry matter yield, the chemical composition and the fermentative profile of silage harvested on three dates (days 120, 150 and 180), of eight clones of sweet potato. the dry matter yield did not vary according to the harvest time of the branches, resulting in an average of 6.01t ha-1. the dry matter content in the stems increased with the growth cycle, and there are average levels of 11.94, 12.16 and 19.62% on days 120, 150 and 180 after cutting, respectively. the raw potato silage showed high protein content and adequate energy fermentation and therefore, potential for use in animal feed, regardless of clones.
Spasmolytic Activity of Chiral Monoterpene Esters
Dami?o P. de Sousa,Genival A. S. Júnior,Luciana N. Andrade,Josemar S. Batista
Records of Natural Products , 2011,
Abstract: The present study aimed to investigate the correlation between structure and spasmolytic activity of racemate and enantiomers of linalyl and citronellyl acetates, chemical constituents of several bioactive essential oils, such as Thymus leptophyllus essential oil, which contains linalyl acetate as major constituent. The monoterpene esters showed significant spasmolytic activity in guinea-pig isolated ileum. Therefore, these result confirm that linalyl acetate should be involved at spasmolytic activity of the Thymus leptophyllus essential oil. The (+)-, (-)-, and (±)-linalyl acetates exhibited a relaxant effect equipotent. (+)- and (-)-Citronellyl acetates also showed a similar effect, however, synergistic action was presented on constituents of citronellyl acetate racemate. The study showed that the racemate and enantiomers of linalyl and citronellyl acetates are bioactives and that the position of the functional group on the molecule structures influences the effect of relaxation of the ileum.
Amazonian Fruits: An Overview of Nutrients, Calories and Use in Metabolic Disorders  [PDF]
Moacir Couto de Andrade Júnior, Jerusa Souza Andrade
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.517182
Abstract: Amazonian fruits are outstanding in quality. They are consumed as true delicacies of nature by the Brazilian population. Besides their attractive attributes, i.e. appearance, different textures and distinctive flavors, their nutritional value is diversified in the type of calories and the functional food ingredients. In addition to being very palatable, Amazonian fruits provide energy-rich macronutrients (lipids, proteins and carbohydrates), micronutrients (minerals, water-soluble vitamins and fat-soluble vitamins), prebiotics (dietary fibers, especially pectin), bioactive substances (carotenoids and polyphenols), variety in the diet and improvement in the organoleptic properties and digestibility of (mixed) foods. This study first aimed to review concepts applicable to nutritional constituents and caloric contents of Amazonian fruits. It also attempted to clarify the potential use of these fruits in metabolic disorders (i.e. diabetes mellitus and/or obesity). To fulfill these purposes, 12 fruits were chosen for their dietetic significance in the Brazilian Amazonia.
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