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Registros recuperados: 16 | |
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Gonçalves,Wainer Gomes; Severiano,Eduardo da Costa; Silva,Fabiano Guimarães; Costa,Kátia Aparecida de Pinho; Guimarães-Junnyor,Wellingthon da Silva; Melo,Gabriel Bressiani. |
In the south-central region of Brazil, there is a trend toward reducing the sugarcane inter-harvest period and increasing traffic of heavy harvesting machinery on soil with high water content, which may intensify the compaction process. In this study, we assessed the structural changes of a distroferric Red Latosol (Oxisol) by monitoring soil water content as a function of the Least Limiting Water Range (LLWR) and quantified its effects on the crop yield and industrial quality of the first ratoon crop of sugarcane cultivars with different maturation cycles. Three cultivars (RB 83-5054, RB 84-5210 and RB 86-7515) were subjected to four levels of soil compaction brought about by a differing number of passes of a farm tractor (T0 = soil not trafficked, T2 = 2... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum sp.; Soil physical degradation; Monitoring soil water content; Industrial quality. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000200008 |
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Severiano,Eduardo da Costa; Oliveira,Geraldo César de; Dias Júnior,Moacir de Souza; Costa,Katia Aparecida de Pinho; Silva,Fabiano Guimarães; Ferreira Filho,Silvio Marcos. |
The agricultural potential of Latosols of the Brazilian Cerrado region is high, but when intensively cultivated under inappropriate management systems, the porosity can be seriously reduced, leading to rapid soil degradation. Consequently, accelerated erosion and sedimentation of springs and creeks have been observed. Therefore, the objective of this study was to evaluate structural changes of Latosols in Rio Verde, Goiás, based on the Least Limiting Water Range (LLWR), and relationships between LLWR and other physical properties. Soil samples were collected from the B horizons of five oxidic Latosols representing the textural variability of the Latosols of the Cerrado biome. LLWR and other soil physical properties were determined at various soil... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Degradation of agricultural soils; Soil penetration resistance; Water availability; Soil texture. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300013 |
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Mota,Clenilso Sehnen; Araújo,Eduard Lucas Souza; Silva,Fabiano Guimarães; Dornelles,Paulo; Freiberger,Mariângela Brito; Mendes,Giselle Camargo. |
Abstract Eugenia dysenterica DC is a fruiting species endemic to the Brazilian Cerrado, belonging to the Myrtaceae family and popularly known as Cagaiteira. It has medicinal and antifungal properties, and has an important function in the ecosystem. Nevertheless, there are few studies about the maintenance of this species. The aim of this study was to evaluate the growth, nutrition, quality and physiology of E. dysenterica seedlings grown in fine vermiculite and rice husk-based substrates in the following combinations: 1:0, 3:1, 1:1, and 1:3, in addition to Trimix® commercial substrate and vermiculite only. The physical attributes of substrates (dry and moist densities, available water, remaining water, aeration space and total porosity), seedling emergence... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cagaita; Gas exchange; Fluorescence; Quality index. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000101002 |
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Dornelles,Paulo; Silva,Fabiano Guimarães; Mota,Clenilso Sehnen; Santana,João das Graças. |
This study aimed to evaluate the effect of substrate on growth, emergence, nutrition, and quality of Anacardium othonianum Rizz. (cerrado cashew tree) seedlings. The experiment was conducted in a greenhouse at the Plant Tissue Culture Laboratory on the Rio Verde campus. The following substrates were used: 1) Bioplant®, 2) Mecplant® (MP) + carbonized rice husk (CRH) (7:3), 3) fine-grained vermiculite (FGV), 4) FGV+CRH (3:1), 5) FGV+CRH (1:1), 6) FGV+CRH (1:3), and 7) sugarcane bagasse (SB) + sugarcane mill filter cake (FC) (3:2). Emerged seedlings were counted at 2-day intervals for 38 days following emergence of the first seedling. At 39, 64, and 89 days after seeding (DAS), the following variables were measured: stem length (SL), stem diameter (SD), and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado cashew tree; Seedling growth; Seedling nutrition; Substrates. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000200026 |
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Cabral,J. Silva Rodrigues; Assis,Kerlley Cristina-de; Silva,Fabiano Guimarães; Souchie,Edson Luiz; Carneiro,M. Aurélio Carbone. |
Soil mictobiota catties out important functions in ecosystems, since it influences growth, mineral nutrition and plant health. Phosphorus (P) is the most limiting nutrient in tropical soils and P-solubilizing microorganisms (PSMs) and the arbuscular mycorrhizal fungi (AMF) are the most important groups of the soil microbial community. The aim of this study was to evaluate the effect of inoculating PSMs and AMF on the development of cashew trees (Anacardium othonianum Rizzini) from the Brazilian Cerrado growing on different substrates. An experiment was carried out in a greenhouse and the experimental design was completely randomized with a factorial 4 × 2 arrangement of treatments: PSMs, AMF, PSMs + AMF and the control. In addition, two substrates were... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium othonianum; Promotion of plant growth; Mycorrhiza. |
Ano: 2012 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000800006 |
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Carneiro,Nárgella Silva; Alves,Cássia Cristina Fernandes; Cagnin,Caroline; Belisario,Celso Martins; Silva,Marco Antônio Pereira da; Miranda,Mayker Lazaro Dantas; Oliveira Filho,Josemar Gonçalves de; Alves,José Milton; Pereira,Paulo Sérgio; Silva,Fabiano Guimarães; Egea,Mariana Buranelo. |
Abstract: The Cerrado is one of the world's biodiversity hotspots and Brazil’s second largest biome. Many native species of the Brazilian Cerrado provide fruits that have unique sensory characteristics and high nutritional value. This study aimed at characterizing the pulp of Eugenia klotzschiana O. Berg, concerning its proximal composition, bioactive compound content and antioxidant activity. The pulp under study had high moisture (89.47 g kg-1) and caloric (96.07 kcal kg-1) values whereas its contents of protein (0.59 g kg-1) and lipids (2.35 g kg-1) were low. The cerrado pear pulp also had high iron content (16.5 mg kg -1) and dietary fiber (6.45 g kg-1), besides 0.034-0,055 mg kg-1 carotenoids, 8.66 mg kg-1 ascorbic acid and 0.66 mg kg-1 total... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado pear; Nutrients; Flavonoids; Antioxidant capacity. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100402 |
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Pedroso,Rita Cássia Nascimento; Branquinho,Núbia Angélica de Ávila; Hara,Alessandra Cristina Boffino de Almeida Monteiro; Silva,Fabiano Guimarães; Kellner Filho,Luis Claudio; Silva,Marcio Luís Andrade; Cunha,Wilson Roberto; Pauletti,Patricia Mendonça; Januário,Ana Helena. |
ABSTRACT: Hyptis marrubioides (Lamiaceae) is a medicinal plant that is native from Brazilian Cerrado. In vitro propagation techniques make use of elicitors to alter metabolic pathways, affecting how molecules are produced both qualitatively and quantitatively. This research aimed to evaluate how abiotic elicitors salicylic acid (SA) and silver nitrate (SN) at concentrations of 30µM or 60µM influence Hyptis marrubioides seedling growth by two different in vitro culture methods. The rutin content was quantified by HPLC-DAD. Compared to an untreated culture, the H. marrubioides methanolic extracts cultured in MS medium for 10 days followed by culture in MS medium containing SN (30µM) for 20 days had 1.28 times higher rutin content. In a second experiment,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salicylic acid; HPLC-DAD; Tissue culture; Silver nitrate; Elicitation; Plant growth regulators. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200400 |
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Sales,Juliana de Fátima; Alvarenga,Amauri Alves de; Oliveira,João Almir de; Nogueira,Francisco Dias; Silva,Fabiano Guimarães; Veiga,André Dely. |
Com este trabalho, objetivou-se verificar a ação da celulase sobre a decomposição do pergaminho das sementes de cafeeiro. Foram implantados dois experimentos, sendo o primeiro, realizado em condições in vitro. Constituído por três ensaios para avaliar os efeitos das concentrações da enzima, do substrato e sacarificação enzimática do pergaminho. O segundo, foi realizado em condições in vivo, com imersão das sementes de cafeeiro em solução de celulase na concentração de 1,6 g.L-1 em tampão citrato de potássio 0,05 mol.L-1. Observou-se que a quantidade de açúcar liberado in vitro foi diretamente relacionada com a concentração de enzima, e que houve aumento expressivo e linear na quantidade de açúcares redutores liberados nas duas concentrações (1,6 e 3,2... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica L.; Enzima; Tempo de imersão. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542005000600007 |
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Silva,Fabiano Guimarães; Pinto,José Eduardo Brasil Pereira; Cardoso,Maria das Graças; Nascimento,Evandro A.; Nelson,David Lee; Sales,Juliana de Fátima; Mol,Daniel José de S.. |
In this research it was studied the influence of the radiation intensity on growth and on the essential oil yield of Baccharis trimera. The plants growth was studied under four levels of radiation: 100, 60, 50 and 20% during a 259-day long period. Plants were then evaluated for height, number of nodes, branches, stem diameter (at the height of the colon), biomass formation, and content and composition of the oil. The highest level of radiation caused increases in all of the variables evaluated, except for height, which was reduced with increasing radiation. Essential oil content also increased with increasing level of radiation. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Baccharis trimera; Asteraceae; Medicinal plant. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542006000100007 |
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Pereira,Rita de Cassia Alves; Pinto,José Eduardo Brasil Pereira; Bertolucci,Suzan Kely Vilela; Castro,Evaristo Mauro de; Silva,Fabiano Guimarães. |
Na Amazônia existe uma diversidade vegetal, onde se encontram muitas plantas com propriedades medicinais e, que durante milênios são utilizadas pelas comunidades nativas. Uma dessas plantas é a unha-de-gato (Uncaria guianensis), cujo valor medicinal se atribui a efeitos imuno-estimulantes, anti-inflamatório e inibidores de crescimento de células cancerígenas. Atualmente, a espécie vem sendo submetida a uma extração indiscriminada e intensiva, podendo levá-la a sua extinção. A micropropagação permite solucionar problemas dessa natureza. Objetivou-se com este trabalho identificar um protocolo de propagação in vitro desta espécie. O melhor meio para germinação dos embriões foi ¼ de MS independente da presença ou não de sacarose. A posição de inoculação do... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micropropagação; Planta medicinal; Embriões; Unha-de-gato. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542006000400007 |
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Sales,Juliana de Fátima; Alvarenga,Amauri Alves de; Oliveira,João Almir de; Nogueira,Francisco Dias; Rezende,Lúcio Costa; Silva,Fabiano Guimarães. |
As sementes de café germinam lentamente em razão de a semeadura ser feita logo após a colheita, o que coincide com o período frio do ano, e também por causa de o pergaminho constituir uma barreira que dificulta a absorção de água pela semente. Objetivando avaliar o efeito da aplicação exógena da enzima celulase sobre a germinação de sementes de café, foi realizado o experimento com sementes de café, cultivar Acaiá do Cerrado, imersas em solução de celulase em diferentes concentrações (0; 1,6; 3,2 e 6,4 g.L-1 em tampão citrato de potássio 0,05 M e pH 4,8), por 0, 72 e 144 horas. Observou-se que a enzima celulase na concentração de 6,4 g.L-1 proporcionou maior índice de velocidade de germinação (IVG) e porcentagem de germinação, quando as sementes ficam em... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica L.; Enzima; Celulase; Germinação. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542003000300009 |
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Registros recuperados: 16 | |
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