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Search Results: 1 - 10 of 644691 matches for " Derly José H. da;Corrêa "
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Conserva??o e qualidade pós-colheita de quiabo sob diferentes temperaturas e formas de armazenamento
Mota, Wagner F da;Finger, Fernando Luiz;Cecon, Paulo Roberto;Silva, Derly José H da;Corrêa, Paulo César;Firme, Lúcia P;Mizobutsi, Gisele P;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000100003
Abstract: this work had the goal to evaluate the influence of pvc film and temperature on the postharvest storage life in four cultivars of okra. the treatments were displayed in randomized complete blocks, in split-split-plot design, where the parcels were the temperatures of 5 and 10oc, and in the sub parcels a 2 (control and pvc wrapped fruits) x 4 (cultivars amarelinho, red velvet, star of david and mammoth spinless) factorial, and in the sub-sub parcels six sampling moments, containing four blocks. storage at 10oc and wrapping the fruits with pvc film improved the control of fresh mass loss. the film was more efficient in maintaining higher water content in the fruit pericarp at 5 or 10oc. the cultivar amarelinho lost less fresh mass and maintained higher water content. fruits stored at 5oc had higher vitamin c content. the cultivars mammoth spinless and star of david showed lower losses of vitamin c. cultivar mammoth spinless had the highest content of chlorophyll and amarelinho the lowest. in general the development of chilling and browning was higher in fruits without pvc film at 5oc. the cultivar amarelinho had better postharvest conservation at 10oc and using pvc film.
Caracteriza??o físico-química de frutos de quatro cultivares de quiabo
Mota, Wagner F. da;Finger, Fernando Luiz;Silva, Derly José H. da;Corrêa, Paulo César;Firme, Lúcia P.;Neves, Ludmila L. de M.;
Horticultura Brasileira , 2005, DOI: 10.1590/S0102-05362005000300006
Abstract: in an experiment some physical and chemical characteristics of four okra cultivars were evaluated. the experimental design was of randomized blocks, where the treatments were the cultivars amarelinho, red velvet, star of david and mammoth spinless with five replications. at commercial maturity fruits of the cultivar star of david presented the largest diameter, total fresh matter, content of dry matter, smallest length, content of water and vitamin c in comparison to the other cultivars. the cultivar red velvet presented the smallest diameter, total fresh matter, content of dry matter, reducing sugars and content of chlorophyll a, b and total, but the largest content of water and vitamin c. the cultivar amarelinho produced the longest fruits and the smallest content of chlorophyll a, b and total. the cultivars amarelinho and mammoth spinless showed higher contents of total reducing sugars.
Armazenamento de frutos de quiabo embalados com filme de PVC em condi??o ambiente
Mota, Wagner F da;Finger, Fernando Luiz;Cecon, Paulo Roberto;Silva, Derly José H da;Corrêa, Paulo César;Firme, Lúcia P;Neves, Ludmila L de M;
Horticultura Brasileira , 2006, DOI: 10.1590/S0102-05362006000200028
Abstract: the present work evaluated the influence of pvc film on the postharvest shelf life of four cultivars of okra stored at room temperature. the experiment was arranged in random blocks, in sub split parcels, where the parcels were a factorial 2x4, with and without pvc film and the cvs. amarelinho, red velvet, star of david and mammoth spinless, and the subparcels the six sample time with four blocks. the characteristics evaluated were: percentage of weight loss, relative water content, total chlorophyll and chlorophyll a and b, content of vitamin c, visual browning. the pvc was efficient in controlling the weight loss and retained the water content through storage. the lowest losses were observed for the cvs. amarelinho and star of david, without and with pvc, respectively. there was higher retention of vitamin c in the fruits wrapped with pvc and the cvs. red velvet and star of david kept higher content of it. in general, the cv. mammoth spinless kept higher content of chlorophyll. the higher incidence of browning was in fruits stored without pvc. the red velvet had better shelf life due to lower browning.
Sistemas de tutoramento e condu??o do tomateiro visando produ??o de frutos para consumo in natura
Marim, Bruno G.;Silva, Derly José H. da;Guimar?es, Marcelo de A.;Belfort, Gabriel;
Horticultura Brasileira , 2005, DOI: 10.1590/S0102-05362005000400018
Abstract: the main reason for staking and training tomato plants is to keep plants and fruits off the ground to reduce losses and to improve the quality of the production. to evaluate the influence of three plant staking and two training systems of the tomato production for fresh market, two experiments were conducted during the period of august 1999 (exp.1) and 2000 (exp.2) in vi?osa, brazil. the experimental design was a randomized complete block design with three blocks, in a 3 x 2 factorial plant staking and 2 conduction systems. the following staking methods were tested: t1, traditional (two bamboo stakes as an inverted v frame); t2, triangular staking or; t3, vertical staking with polypropylene cord. plants were conducted with one or two stems per plant. independent of the treatment, the plants were pruned above the sixth flower cluster. differences were observed among staking and conduction systems and among the years in relation to the appraised characteristics. there was interaction among training, conduction systems and years for marketable fruits and total fruit production. the vertical staking up provided increase in production of fruits of big size and decrease in production of fruits of medium size and production of not marketable fruits, when compared with the other staking methods. independently of the conduction system (for two stems), the tomato cultivated with only one stem produced bigger fruits with higher commercial value, while the plants conduced with two stems produced more fruits of medium and small size.
Composi??o mineral de frutos de quatro cultivares de quiabeiro
Mota, Wagner Ferreira da;Finger, Fernando Luiz;Silva, Derly José Henriques da;Corrêa, Paulo César;Firme, Lúcia Pittol;Ribeiro, Rosilene Ant?nio;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000300009
Abstract: this experiment was carried out at universidade federal de vi?osa and had the objective to evaluate the mineral composition of four cultivars of okra fruits. the experimental design was in randomized blocks, where the treatments were composed by the cultivars amarelinho, red velvet, star of david and mammoth spinless, with five blocks. the cultivar red velvet had the highest content of calcium, phosphorus, sulfur and magnesium. the cultivar mammoth spinless had the highest content of total nitrogen, ammonium and manganese and the lowest content of phosphorus. the cultivars red velvet and star of david had the lowest contents of total nitrogen, ammonium, and manganese. lower contents of calcium, sulfur and magnesium were present in the cultivars amarelinho, star of david and mammoth spinless.
Identifica??o e quantifica??o dos componentes de perdas de produ??o do tomateiro
Loos, Rodolfo A.;Silva, Derly José H. da;Fontes, Paulo Cezar R.;Pican?o, Marcelo C.;Gontijo, Lessando M.;Silva, ézio M. da;Seme?o, Altair Arlindo;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000200015
Abstract: the components of loss in tomato production were identified and quantified, in the summer-autumn period. the critial component and the key factor in the cultivation loss become evident using the methodology of the crop life table. the experiment was conducted at the universidade federal de vi?osa, minas gerais state, brazil, from january to june 2001 and consisted of two treatments (cultivars santa clara and f1 débora plus) in a randomized complete block design with 5 replications. during the tomato cycle, the number of dead plants, the causes of this and the number of flowers and fruits/plant were evaluated. at harvest, the healthy fruits were counted, weighted and classified; the causes of fruit damage were identified and the loss quantified. total loss was more influenced by the fluctuation of the component plants (r=0,89) (p<0,01) than by other production components; consequently, plants were considered the critical production components of tomato. tswv virus was the only factor affecting plant death, being considered the key-factor in the loss of this tomato production.
Basal defoliation and their influence in agronomic and phytopathological traits in tomato plants
Silva, Laércio J da;Milagres, Carla do C;Silva, Derly José H da;Nick, Carlos;Castro, Jo?o Paulo A de;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000300020
Abstract: the incidence of leaf diseases is one of the main factors limiting the tomato crop production, increasing the production cost due to excessive pesticide application. the basal leaf removal could reduce inoculum sources, disease severity and contribute to reducing the use of pesticide. aiming to evaluate the efficiency of this practice on the reduction of tomato leaf diseases and the effect in the quality and in the productivity of the tomato plants for in natura consumption, two experiments were carried out to test four levels of basal leaf removal. basal leaves removal, at fruit harvesting, is efficient in reducing the infected plant area by disease, what can mean smaller disease severity and least inoculum source in the field. also, the all basal leaf removal does not affect yield and quality of the tomato fruits. other studies are necessary to evaluate the effect of adopting this practice in different planting dates, spacing, varieties, successive plantings and the financial viability of adopting this practice.
Produ??o e sabor dos frutos de tomateiro submetidos a poda apical e de cachos florais
Guimar?es, Marcelo de A;Silva, Derly José H da;Fontes, Paulo Cézar R;Caliman, Fabiano Ricardo B;Loos, Rodolfo A;Stringheta, Paulo C;
Horticultura Brasileira , 2007, DOI: 10.1590/S0102-05362007000200027
Abstract: the effect of top-shoot and floral cluster pruning on the production and flavor of the tomato fruits were experimentally evaluated (may to november of 2002). the experimental design was of randomized blocks, with five treatments, seven replications, and eight-plant plots. seedlings from cultivar kindyo of indeterminate growth habit, were used. treatments were: (a) pruning of the 1st floral cluster and top-shoot pruning above the 7th floral cluster; (b) same as a, but without top-shoot pruning and with pruning of the floral clusters above the 7th cluster; (c) without pruning the 1st floral cluster, but with top-shoot pruning above the 6th floral cluster; (d) same as c, but without top-shoot pruning and with pruning of floral clusters above the 6th.; (e) without top-shoot and floral cluster pruning, but evaluating only the first six floral clusters. tomato fruits were harvested, graded and weighed in a week basis, after reaching maturity (100% red). data were submitted to variance analysis and tukey's test (p<0.05). pruning of the 1st floral cluster was detrimental for commercial production of tomato fruits. the preservation of plant growth in combination with pruning of floral cluster above the sixth, without pruning the first floral cluster (treatment d), significantly increased the production of large fruits (101.5 t ha-1) in relation to the other treatments (treatment a: 74.9; b: 71.4; c: 80.3; e: 78.9 t ha-1). however, for commercial production, treatment d (127.7 t ha-1) significantly differed only from treatments a and b (106.6 and 99.4 t ha-1, respectively). for total production, flavor, obrix, and ph, whose averages were respectively 149.4 t ha-1; 13; 4,32%, and 4,34, there were no significant differences.
Caracteriza o agron mica da produ o de rizomas de clones de taro
Pereira Francisco Hevilásio F.,Puiatti Mário,Miranda Glauco V.,Silva Derly José H. da
Horticultura Brasileira , 2003,
Abstract: Objetivou-se caracterizar agronomicamente 36 acessos (clones) de taro pertencentes ao Banco de Germoplasma de Hortali as da UFV quanto às características relativas à produ o de rizomas. O experimento foi conduzido na horta de pesquisas da UFV, de 19/09/2000 a 13/07/2001. Foi utilizado o delineamento de blocos casualizados, com 36 tratamentos (clones) e cinco repeti es. A parcela foi composta de quatro fileiras, com quatro metros de comprimento, com as plantas espa adas de 1,0 x 0,5 m. As características avaliadas foram peso médio de rizomas comerciáveis; número de rizomas comerciáveis por planta; produtividade de rizomas comerciáveis e total; raz o de formato (diametro longitudinal/diametro transversal) de rizomas comerciáveis; produtividade de rizomas em classes (com base no diametro transversal) filho grande (>47 mm), filho médio (40-47 mm), filho pequeno (33-40 mm) e refugo (< 33 mm). Os clones BGH 5916, BGH 6137 e BGH 6298 apresentaram boa conforma o, com a raz o de formato entre 1,1 e 1,7 (rizomas oblongos) e as melhores respostas agron micas quanto ao peso médio de rizomas comerciáveis, produtividades comerciável e total, n o diferindo do clone BGH 5925 (Japonês) e sendo maior que do clone BGH 5928 (Chinês), esses últimos os mais plantados no Brasil. Os clones BGH 6307 e BGH 6308, apesar de n o apresentarem peso médio de rizomas comerciáveis t o elevado quanto os clones BGH 5916, BGH 6298 e BGH 6137, em raz o do maior número de rizomas comerciáveis por planta, tiveram produtividades comerciáveis semelhantes a esses e boa produtividade total. Correla es positivas e significativas foram encontradas entre peso médio de rizomas comerciáveis (0,6370 e 0,7450), número de rizomas comerciáveis por planta (0,7133 e 0,5338), produtividade de rizomas filho grande (0,9107 e 0,9451) com as produtividades de rizomas comerciáveis e totais, respectivamente; entre a produtividade de rizomas comerciáveis (0,9455) e produ o de rizomas m e (0,8753) com a produtividade total; e entre peso médio de rizomas comerciáveis com produ o de rizomas filho grande (0,8519). Os componentes primários com maiores correla es positivas com a produtividade comerciável foram peso médio e número por planta de rizomas comerciáveis e produtividade de rizomas filho grande.
Selective and efficient mitochondrial staining with designed 2,1,3-benzothiadiazole derivatives as live cell fluorescence imaging probes
D. Neto, Brenno A.;Corrêa, José R.;Carvalho, Pedro H. P. R.;Santos, Diego C. B. D.;Guido, Bruna C.;Gatto, Claudia C.;Oliveira, Heibbe C. B. de;Fasciotti, Maíra;Eberlin, Marcos N;Silva Jr., Eufranio N. da;
Journal of the Brazilian Chemical Society , 2012, DOI: 10.1590/S0103-50532012000400024
Abstract: novel designed 2,1,3-benzothiadiazole fluorescent probes were synthesized, characterized and applied as live cell fluorescence imaging probe staining only mitochondria in mammalian cancer cell lines (mcf-7). the efficiency of these new probes was found to be much superior to that of the commercially available mitotracker? red. cellular and in vitro experiments allowed better understanding of the relationship between the planned molecular architecture of the new dyes and the observed cellular selectivity.
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