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da Silva Alves G.,Federal University of Pampa | de Lima Tartaglia F.,Federal University of Pampa | Rosa J.C.,Centro Universitario Luterano Of Ji Parana | Ferreira M.M.,Federal University of Pampa | And 2 more authors.
Revista Ceres | Year: 2017

The objective of this study was to evaluate the growth, productivity, and fiber quality of colored cotton in different plant populations. We adopted the design in randomized blocks, in a factorial scheme of 5 × 8 for the growth variables and unifactorial for the production components, with four replications. The factors were plant populations (125,000; 41,667; 25,000; 17,857; and 13,889 plants ha-1) and evaluation periods (15; 30; 45; 60; 75; 90; 105, and 120 days after emergence). Five different plant densities were used to compose the plant populations: 10, 3.3, 2, 1.42, and 1.1 plants per meter. The experimental units had 4 m wide, 6 m long, and six plant lines spaced 0.80 m between rows and the two central lines were the useful area. The plant height, stem diameter, leaf area, number of bolls per m2, number of bolls per plant, weight of fruits per plant, productivity of seed cotton, lint yield, and technological characteristics of fiber were evaluated. The increase in plant population reduced the stem diameter, plant height, leaf area, the number of fruits, and weight of fruits per plant, but did not influence the number of bolls per m2. The highest yield of seed cotton and cotton fiber were obtained at populations of 71,471 and 72,964 plants ha-1, respectively. The technological characteristics of fiber, short fiber index, tear strength, and ginning index are improved with the cultivation of 125,000 ha-1 plants.

Da Silva R.A.,Faculdade Metropolitana | Lunardello L.F.A.,Centro Universitario Luterano Of Ji Parana | De Oliveira G.L.,Laboratorio Of Biociencia Da Motricidade Humana Labimh | De Olivera T.A.P.,Laboratorio Of Biociencia Da Motricidade Humana Labimh | Valentim-Silva J.R.,Federal University of Rondônia
Revista Brasileira de Medicina do Esporte | Year: 2016

Introduction: It is well described in the literature that physical exercise of different kinds has many benefits for the health of all populations; however, general fitness programs have received little attention in terms of the possible health benefits for those who take part in them, especially in relation to physical performance measures and walking capacity. Objective: To evaluate the effectiveness of general fitness training on Vo2 max and quality of gait among elderly people. Methods: A group of one hundred and twenty male and female subjects was selected, with a mean age of 64.81 ± 2.71 years, body mass of 66.97 ± 4.81 kg, and height of 164.6 ± 4.81 cm. We used the Balke 15-minute test to determine Vo2 max, and the Dynamic Gait Index to check the quality of gait. Statistical analysis was performed using the Wilcoxon test for related samples, with 5% significance. Results: For all treatments, there was a difference in Vo2 max, and the results of the Dynamic Gait Index suggest an improvement in quality of gait. Conclusion: it seems that the general fitness training proposed in this study was effective in improving Vo2 max and quality of gait in the selected group. © 2016, Redprint Editora Ltda. All rights reserved.

Hymenaea courbaril L. var. stilbocarpa (Hayne) Lee et Lang. is a clímax shadow tolerant specie and Enterolobium contortisiliquum (Vell.) Morong., by the other hand, is considered as a pioneer specie. The development of these species may reflect its adaptation ability to different environmental elements (light, water and temperature) at its growth site. An inadequate supply of some of these elements may reduce plant vigor and limit its development. This work aimed to evaluate the effects of shade intensity on the growth and photosynthetic pigment concentration of two arboreal legumes that are typical to northern Brazil, namely, the Hymenaea courbaril L. var. stilbocarpa (Hayne) Lee et Lang. and the Enterolobium contortisiliquum (Vell.) Morong. The experiment was carried out at the Centro Universitário Luterano de Ji-Paraná (CEULJ/ULBRA)/Rondônia. During the formation of the seedlings, both species were exposed to four treatments of shade: 0% (control - without shade); 30%; 50% e 80%. Each treatment was carried out with three replications for each species; the experimental design was completely randomized. Four month after sowing, the following analyses were carried out: number of leaves, plant height, roots length, dry mass and photosynthetic pigment concentration. The treatment under 0% shade impaired the seedling growth of both species. The most favorable treatments were 50% and 80% shade. According to the shade intensity, the chlorophyll a/b ratio decreased and the chlorophyll and carotenoids increased.

Orrutea A.G.,Centro Universitario Luterano Of Ji Parana | Melo V.F.,Federal University of Paraná | Motta A.C.V.,Federal University of Paraná | Lima V.C.,Federal University of Paraná
Acta Amazonica | Year: 2012

The high soil temperatures that take place during the burning of the Amazon rainforest may induce soil mineralogical transformations. This study aimed to evaluate mineralogical changes in sand, silt and clay fractions and to assess K reserve of soils submitted to different managements (11 years of secondary forest, pasture and coffee plantation) after slashing and burning of a native forest in the Southern Amazon, Cacoal, Rondonia State, Brazil. An area of ombrophilous dense native forest with homogeneous pedologic features was divided into four parts, being three of them submitted to slash and burn and then cropped. In each area, soil profile was described and the A, AB, B1, 2B2 and 2BC horizons were sampled. Mineralogical analyses of clay, silt and sand fractions were performed by X ray diffraction. Clay fraction was also submitted to selective solvent with citrate-bicarbonate-dithionite (CBD) and ammonium oxalate (AO). The soil contents of non-exchangeable K was extracted by boiling with 1 mol L-1 HNO3. Soil mineralogical analysis indicated that kaolinite was the predominant mineral in the clay fraction. There was also evidence of a large reserve K, associated to the occurrence of mica in clay, silt and sand fractions. Chemical analysis indicated that land use did not change the concentration of Fe2O3CBD and Fe2O3AO. However, the highest goethite/hematite ratio [Gt(Gt+Hm)] calculated for the A horizon of the forest soil suggests that the burning favored the partial transformation of goethite in hematite into those areas where it was carried out.

Da Silva J.,Centro Universitario Luterano Of Ji Parana | Saccini V.A.V.,Paulista University | Dos Santos D.M.M.,São Paulo State University
Semina:Ciencias Agrarias | Year: 2015

It was studied the effects of seed treatment with polyamines of pigeonpea for proline content of seedling in order to verify that the application of these polyamines attenuates temperature stress on germination and early seedling growth, and see if exogenous putrescine and spermidine induce the accumulation of proline, this amino acid may be biochemical and physiological indicator in seedlings that are under suboptimal temperatures and supraoptmail. The seeds of pigeonpea cv. BRS Mandarin and cv. Caqui, treated with a solution of 0.5 mM of putrescine and spermidine, were subjected to suboptimal temperature (20°C, 18°C, 16°C and 14°C) and supraoptimal (36°C, 38°C, 40°C and 44°C) for 24 hours and 48 hours. After these periods, were subjected to 25°C until day 10, when the percentage of seed germination were observed, the proline content of vegetative parts and the dry mass of the seedlings. A completely randomized design in a factorial arrangement was used 3×4×2+3 (solutions with polyamines, temperature stress by cooling/heating, time of exposure to stress, plus additional factors em25°C with 0.0 mM and 0.5mM of Put and Spd), with four replicates of 25 seeds. The results were submitted to analysis of variance and means were compared by Tukey test at 5% probability, separately for each cultivar. Both exogenous polyamines attenuate the effects of cooling and heating, contributing to the growth of germinated seeds. Also, putrescine and spermidine exogenous mitigated the adverse effects by inducing proline accumulation, which leads to osmotic adjustment temperatures, although this physiological response has not minimized the negative effects of temperature stress on seedling growth of pigeonpea. Proline can be considered biochemical and physiological indicator in seedlings of both cultivars of pigeonpea treated with polyamines under temperature stress.

Barbieri A.M.,University of Sao Paulo | Venzal J.M.,University of the Republic of Uruguay | Marcili A.,University of Sao Paulo | Almeida A.P.,University of Sao Paulo | And 3 more authors.
Vector-Borne and Zoonotic Diseases | Year: 2013

The Borrelia burgdorferi sensu lato (s.l.) group comprises genetically related spirochetes, mostly associated with tick species belonging to the Ixodes ricinus complex in the Northern Hemisphere. The present study evaluated borrelial infection in the tick Ixodes pararicinus, which is the only representative species of the I. ricinus complex in Uruguay. A total of 137 I. pararicinus ticks were collected from deer, cattle, or vegetation in 2 Uruguayan Departments. A part of these ticks was tested directly by PCR targeting the borrelial gene flagellin (fla), whereas another part of the ticks was inoculated into Barbour-Stoenner-Kelly (BSK)-H medium in an attempt to isolate Borrelia. Overall, Borrelia infection was detected in 9 males and 1 nymphal tick pool. These ticks were found to be infected by unique fla haplotypes, which were shown through phylogenetic analysis to represent possibly 2 new B. burgdorferi s.l. genospecies, 1 associated with B. bissettii, the other phylogenetically closest to B. americana. These results were reinforced by PCR and DNA sequencing analyses of portions of 2 additional borrelial genes, rrfA-rrlB intergenic spacer region (IGS) and 16S rDNA (rrs). Weekly examinations of BSK cultures by dark-field microscopy failed to demonstrate live Borrelia through a 100-day incubation period. However, Borrelia DNA was detected by fla-PCR in culture media from 2 vials up to 90 days after inoculation. To the best of our knowledge, this is the first report of B. burgdorferi s.l. infecting ticks in South America. © Mary Ann Liebert, Inc.

Rocha R.B.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária | Vieira D.S.,Centro Universitario Luterano Of Ji Parana | Ramalho A.R.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária | Teixeira A.L.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária
Coffee Science | Year: 2013

Efficient strategies to manipulate the genetic variability are crucial to the success of breeding programs Coffea canephora. Combinations between divergent parents express greater heterosis effect, and the selection of matrices consider both genetic divergence and superior agronomic performance. The objective of this study was to quantify the genetic diversity of C. canephora accesses Active Germplasm Bank of Embrapa Rondônia, in order to identify plants of greater genetic diversity and higher yield potential for hybridization. For this, between 1100 accessions were pre-selected 89 plants for evaluation of major components in the production of processed coffee. For quantification of genetic diversity technique for principal components associated landmarks to gather the information of genetic divergence and agricultural performance in a single analysis was used. The selected accessions showed significant genetic variability for the major components of production, highlighting the values of average blend above 17, which indicates a favorable condition for performing controlled crosses for selection of plants for increased productivity and grain size.

PubMed | Centro Universitario Luterano Of Ji Parana
Type: Journal Article | Journal: Toxicon : official journal of the International Society on Toxinology | Year: 2011

The aim of this study was to determine the cause of sudden deaths in sheep in the Anari Valley of the state of Rondnia, in northern Brazil. In one outbreak, sheep were placed in an area where the owner had cut Amorimia (Mascagnia) sepium and let it dry for two days. Fourteen out of 35 sheep died with few outward clinical signs observed over a period of about 10 h after the ingestion of the dry plant. Dry A. sepium was administered experimentally to 9 sheep. Five died after the ingestion of single doses of 3-6.6 g/kg body weight (bw). Two sheep died after the ingestion of total doses of 6.4-31 g/kg bw over the course of 4 and 5 days, respectively, and one died after being treated with 33 daily doses of 0.56 g/kg bw. Six sheep died during exercise, and three died without exercise. Clinical signs were anorexia, muscular tremors, dyspnea, jugular engorgement, tachycardia, apathy, opisthotonos, foam in the nose, and recumbency. One sheep, which ingested a single dose of 1 g/kg bw, was not affected. The main macroscopic lesion was pulmonary edema. Histologic examination of the heart revealed degeneration and necrosis of cardiomyocytes, as well as multifocal inflammatory infiltrate of mononuclear cells. Fibrosis, neovascularization and infiltration by mononuclear inflammatory cells were observed in the sheep that ingested the plant for 33 days. Vacuolar-hydropic degeneration was observed in the epithelial cells of renal tubules of four sheep. It is concluded that A. sepium is responsible for sudden deaths in sheep.

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