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| Registros recuperados: 54 | |
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| Schneider, Cristina Fernanda; Gusatto, Fabiane Cristina; Dranski, João Alexandre Lopes; Malavasi, Marlene de Matos; Malavasi, Ubirajara Contro. |
| In this study, we sought to identify efficient enzymes for use in monitoring the deterioration and loss of germination of Balfourodendron riedelianum (Engler) Engler seeds. The research was conducted at the Laboratório de Tecnologia de Sementes e Mudas of the Universidade Estadual do Oeste do Paraná, Campus Marechal Cândido Rondon, Paraná State, Brazil. Seeds were harvested at three collection sites and later submitted for processing, drying, initial characterization and storage in airtight packaging under controlled and uncontrolled storage conditions and uncontrolled. Tests were conducted at 0, 120, 240, and 360 days using a germination test, germination speed index, accelerated ageing test and the activity of peroxidase, phenylalanine ammonia-lyase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ivory wood; Ageing; Physiological quality; Enzymatic activity.; Sementes Florestais. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39347 |
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| Rangel, Marco Antônio Sedrez; Embrapa Mandioca e Fruticultura Tropical; Minuzzi, Andréia; União do Ensino Superior de Nova Mutum; Pierezan, Luciane; Embrapa Agropecuária Oeste,; Teodósio, Tiara Kesli Conticelli; Universidade Federal da Grande Dourados; Ono, Fábio Benedito; Universidade Federal de Lavras; Cardoso, Paulo César; Universidade Federal da Grande Dourados. |
| Sementes de soja produzidas em algumas regiões do Estado de Mato Grosso do Sul têm apresentado sérios problemas de qualidade pela ocorrência de elevados percentuais de sementes esverdeadas. Objetivando averiguar o problema, foi conduzido um experimento em que foram avaliados potencial de germinação, comprimento de raiz, teor de óleo e porcentagem de acidez do ácido oleico das sementes de soja das cultivares BRS 133, BRS 181, BRS 206, BRS 239, BRS 240, BRS 241, CD 202 e Embrapa 48, produzidas em seis locais do Estado (Dourados – Barreirão, Dourados – CPAO, Maracaju, Naviraí, Ponta Porã e Sidrolândia). O delineamento experimental de campo foi em blocos ao acaso com três repetições, em cada local. Os genótipos de Ponta Porã e Barreirão, cujos lotes continham... |
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Palavras-chave: 5.01.03.00-8 Glycine Max; Cultivares; Qualidade fisiológica 5.01.03.03-2 Glycine max; Cultivars; Physiological quality. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4852 |
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| Schneider, Cristina Fernanda; Gusatto, Fabiane Cristina; Dranski, João Alexandre Lopes; Malavasi, Marlene de Matos; Malavasi, Ubirajara Contro. |
| In this study, we sought to identify efficient enzymes for use in monitoring the deterioration and loss of germination of Balfourodendron riedelianum (Engler) Engler seeds. The research was conducted at the Laboratório de Tecnologia de Sementes e Mudas of the Universidade Estadual do Oeste do Paraná, Campus Marechal Cândido Rondon, Paraná State, Brazil. Seeds were harvested at three collection sites and later submitted for processing, drying, initial characterization and storage in airtight packaging under controlled and uncontrolled storage conditions and uncontrolled. Tests were conducted at 0, 120, 240, and 360 days using a germination test, germination speed index, accelerated ageing test and the activity of peroxidase, phenylalanine ammonia-lyase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.02.01.04-2 ivory wood; Ageing; Physiological quality; Enzymatic activity. Sementes Florestais. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39347 |
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| Conceição, Gerusa Massuquini; Cunha, Vinícius dos Santos; Fipke, Glauber Monçon; Bruning, Lucas Allan; Rossato, Anderson da Costa; Martin, Thomas Newton. |
| The objectives of this study were to evaluate the effect of the chemical composition of soybean seeds and the efficiency of seed mineral supplementation on physiological quality and field performance. Two seed lots (high and low levels of mineral nutrition), with or without supplemental macro- and micronutrients, of three soybean cultivars (BMX Potência RR, BMX Turbo RR, and BMX Magna RR) were used. For the laboratory experiment, a completely randomized design with four replications was used. To evaluate the physiological quality of the seeds, the water content, first count, germination, 1,000-seed weight, and length and dry weight of the seedling were determined. For the field experiment, a randomized block design with four replications was used, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.) Merrill; Seed physiology; Physiological quality; Chemical composition. Glycine max (L.) Merrill; Seed physiology; Physiological quality; Chemical composition.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42484 |
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| da Silva, Raimunda Nonata Oliveira; Cavalcante, Jerffeson Araujo; Gadotti, Gizele Ingrid; Martins, Andrea Bicca Noguez; Teixeira, Sheila Bigolin; Vergara, Rafael Oliveira; de Tunes, Lilian Vanussa Madruga. |
| The objective of this study was to verify the separation of soybean seed lots according tovigor levels by the rapid ethanol test follow ing the adapted ethylometer method. The design used was entirely randomized, with four repetitions. The treatments consisted of five soybean seed lots, which were submitted to germination tests, first germination count, accelerated aging, field emergence, and electrical conductivity and ethanol measurement test. To measure ethanol, 50 soybean seeds were placed in plastic bottles containing 50 mL of distilled water, then placed in a BOD incubator for different temperatures and exposure times. After the imbibition period, measurements were performed with the aid of an adapted ethylometer. It is possible to quantify ethanol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max L.; Physiological quality; Deterioration; Alcohol. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6453 |
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| CASSOL,FLÁVIA D.R.; FORTES,ANDRÉA M.T.; MENDONÇA,LORENA C.; BUTURI,CAMILA V.; MARCON,THAÍS R.. |
| Beans are one of the most used foods to meet the energy needs of the Brazilian diet, requiring farmers to use high seed physiological potential. The aim was to evaluate the physiological quality of beans stored for 360 days. Analyses were performed at 0, 30, 90, 180, 270, and 360 days after receiving the seeds (S1 and S2) and grains (G1 and G2) of BRS Splendor. Tests of germination, accelerated aging, cold, speed of germination, average length of shoots, and root were performed. The experimental design was completely randomized split-plot in time and the means were compared through Tukey test at 5% probability. Seed germination was not affected in S2, while the drop in S1 and G1 was significant. The vigor of grains from field 1 declined from 91 to 50% and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germination; Phaseolus vulgaris L.; Physiological quality; Vigor. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000301069 |
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| Carvalho,Tereza Cristina de; Krzyzanowski,Francisco Carlos; Ohlson,Osvaldo de Castro; Panobianco,Maristela. |
| The tetrazolium test is widely used for seed vigor assessment of various plant species. For wheat, however, there is no methodology specifically recommended. This study aimed at determining an efficient procedure to evaluate vigor of wheat seeds by this test; besides allowing the establishment of seed quality classes. Thus, four different wheat seed lots were assessed by determining the moisture content and through tests of germination, accelerated aging, and field seedling emergence. The following methodologies were assessed: 1) longitudinal bisection of seed, with subsequent placement of the two halves on filter paper moistened with a 1.0% tetrazolium solution, at 30º C, for 2 h; 2) longitudinal bisection, with subsequent immersion of one seed half into... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Physiological quality; Viability. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000600002 |
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| Coelho,Stefânia Vilas Boas; Rosa,Sttela Dellyzete Veiga Franco da; Fantazzini,Tatiana Botelho; Baute,Júlia Lima; Silva,Luciano Coutinho. |
| ABSTRACT Coffee is one of the main agricultural commodities in the country, and it is important to conservation of plant material for breeding programs. Cryopreservation is a promising alternative for preserving in the long-term the germplasm of species considered recalcitrant. However, studies should be performed to achieve maximum survival of seedlings after immersion in liquid nitrogen. The objective of this work was to find a cryopreservation protocol for storing seeds of Coffea canephora, studying two methods of cryopreservation, slow and fast cooling. Seeds were subjected to drying in silica gel up to the water content of 0.25 g g-1. In the first experiment, dried seeds were subjected to treatments of slow cooling at speeds of -1 ºC min-1,-3 ºC min-1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drying in silica gel; Recalcitrant seeds; Ice crystals; Isoenzymes; Physiological quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000600588 |
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| Lima,Juliana Joice Pereira; Freitas,Marcella Nunes de; Guimarães,Renato Mendes; Vieira,Antônio Rodrigues; Ávila,Maria Alice Bento. |
| The aim of this study was to adapt the methodology of the accelerated aging and electrical conductivity tests for determination of physiological potential in crambe seeds. Six seed lots of crambe (cv. FMS Brilhante) were subjected to determination of moisture content, germination test, first count germination, emergence, and emergence speed index. For the accelerated aging test, the traditional methodology was used with water, and with a saturated potassium chloride and sodium chloride solution in three periods of exposure (24, 48, and 72 hours) at 41°C; the electrical conductivity test was performed with four pre-soaking treatments (0, 2, 4, and 8 hours) and four soaking periods (4, 8, 16, and 24 hours) at 25°C. The accelerated aging test with water for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crambe abyssinica; Vigor; Physiological quality. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000100007 |
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| Rocha,Debora Kelli; Carvalho,Everson Reis; Pires,Raquel Maria de Oliveira; Santos,Heloisa Oliveira dos; Penido,Amanda Carvalho; Andrade,Dayliane Bernardes de. |
| ABSTRACT The use of an appropriate method that accurately expresses physiological seed quality and minimizes possible phytotoxicity by chemical products in laboratory testing with soybean seeds is relevant. The objective of this work was to evaluate the influence and infer the method adequacy for the representative evaluation of physiological quality of soybean seeds treated with phytosanitary products. Two experiments were carried out in a completely randomized design, with trial 1 in a 9×5 factorial scheme involving nine seed treatments, including fungicides and insecticides, and solutions with five osmotic potentials (0, -0.25, -0.5, -0.75 and -1.0 MPa) for wetting a paper substrate in a germination experiment, with evaluation of the normal seedlings at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed analysis; Toxicity; Glycine max; Physiological quality; Seed treatment.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100209 |
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| Grzybowski,Camila Ribeiro de Souza; Silva,Rosemeire Carvalho da; Vieira,Elisa Serra Negra; Panobianco,Maristela. |
| ABSTRACT Vernonanthura discolor is a native species with potential for reclamation of degraded lands, and the manufacture of wood panels. This study has aimed to evaluate the process of maturation and germination of Vernonanthura discolor seeds, determining the harvest time, and conducting the germination test. A periodic monitoring of the reproductive development of sources of Vernonanthura discolor was conducted, located in the municipality of Bocaiúva do Sul, PR, Brazil; and starting from the anthesis, weekly collections of seeds were performed to evaluate the percentage of dry matter, germinating power, and vigor, in order to identify the physiological maturity of the seeds. In the germination test, two combinations of four temperatures (20, 30, 20-30... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physiological quality; Dry matter; Seed harvest. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000200164 |
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| Corlett,Francisco M.F; Rufino,Cassyo de A; Vieira,Jucilayne F; Tavares,Lizandro C; Tunes,Lilian V.M; Barros,Antonio C.S.A. |
| Seed coating is a process in which a thin and uniform polymer layer is deposited on the surface of a seed. The objective of this study was to evaluate the vigor of barley seed coated with a commercial polymer and various combinations of calcium, silicon and fungicide. In addition to a control with only the polymer coating, a total of 17 seed coating treatments were used in a completely randomized factorial design (18 treatments × 4 replicates per treatment). Calcium and silicon were applied at concentrations of 0, 25 or 50 g kg¹ of seed, and 0 or 3.0 mL of fungicide was applied. The means were compared using a Duncan test (P≤0.05). The results showed that a coating of polymer, fungicide, calcium and silicon did not affect the physiological... |
| Tipo: Journal article |
Palavras-chave: Seed protection; Physiological quality; Seed quality. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000100013 |
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| Resende,Osvaldo; Almeida,Dieimisson Paulo; Costa,Lílian Moreira; Mendes,Udenys Cabral; Sales,Juliana de Fátima. |
| This study analyzed the drying process and the seed quality of adzuki beans (Vigna angularis). Grains of adzuki beans, with moisture content of 1.14 (decimal dry basis) at harvest and dried until the moisture content of 0.11 (decimal dry basis.) were used. Drying was done in an experimental drier maintened at controlled temperatures of 30, 40, 50, 60, and 70 ºC and relative humidity of 52.0, 28.0, 19.1, 13.1, and 6.8%, respectively. Physiological and technological seed quality was evaluated using the germination test, Index of Germination Velocity (IGV), electrical conductivity, and water absorption, respectively. Under the conditions tested in the present study, it can be concluded that drying time for adzuki beans decreases with the higher air... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physiological quality; Drying conditions; Technological quality; Seed drying. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100022 |
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| Harter,Fabio Schaun; Harter,Leticia dos Santos Holbig; Meneghello,Geri Eduardo. |
| ABSTRACT: In the present study, the objective was to evaluate the production and quality of rice seeds of four cultivars under conditions of saline stress caused by irrigation water. The work was carried out at the EliseuMaciel Agronomy College of the Universidade Federal de Pelotas, with four rice cultivars, IRGA 417, Avaxi CL, Inov CL and IAS 12-9 (Formosa). In the experiment, the following saline concentrations were used: 0; 12.5; 25; 37.5; 50; 75 and 100mM. After completing the crop cycle, the following agronomic characteristics were evaluated in each of the plants: number of panicles, total weight of panicles, percentage of full seeds, percentage of seedlings and weight of a thousand seeds. The physiological quality of the seeds harvested from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; Saline stress; Physiological quality; Agronomic characteristic.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900250 |
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| Bernardi,Alexandre; Ramos,Alexandre Rogério; Silva,Antonio Waldimir Leopoldino da. |
| ABSTRACT: The use of larger seeds may improve the initial development, plant stand, and mass productivity in forage crops. The present study aimed to evaluate the effect of the size of seeds of Sudan grass (Sorghum sudanense L.), standardized on density, on parameters of physiological quality and crop productivity. Seeds were processed in a gravitational table in order to become uniform in terms of density and then submitted to sieves with apertures of 1.75 or 2.00 mm. Three different treatments (seeds without size classification, seeds with diameter between 1.75 mm and 1.99 mm, and seeds with diameter above 2.00 mm) were compared. This study consisted of a laboratory stage for the analysis of physiological variables of seed, and a stage in field plots... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sieves; Seed processing; Forage yield; Physiological quality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000400653 |
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| Santana,Elza Brandão; Valente,Maria da Conceição da Costa; Corumbá,Lorena Gomes; Andrade,Elisangela Lima; Costa,Cristiane Maria Leal; Faria,Lênio José Guerreiro de. |
| ABSTRACT: Processing of particles in a moving bed, such as a fluidized bed or a spouting bed, is commonly used in the operations of drying, coating, and granulation of particulate systems. This process has applications in the chemical, pharmaceutical and, presently, agronomical industries, especially for seed treatment/coating. This research aimed to analyze the fluid-dynamic behavior of fluidized and spouting beds with different air temperatures and loads of flaxseeds (Linum usitatissimum L.), with estimates of the fluid-dynamic parameters correlated to each process. The parameters were compared with the values obtained from classical correlations in the literature, with indications of associated percentages of deviation. Influence of fluid dynamics on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Linum usitatissimum L.; Dynamic bed; Physiological quality; Germination; Fluid-dynamic parameters. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000207 |
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| Registros recuperados: 54 | |
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