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| Registros recuperados: 15 | |
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| Andrade, Leonaldo Alves de; Universidade Federal da Paraíba; Bruno, Riselane de Lucena Alcântara; Universidade Federal da Paraíba; Oliveira, Lamartine Soares Bezerra de; Universidade Federal da Paraíba; Silva, Hipólito Tadeu Ferreira da; Centro Federal de Educação Tecnológica de Rio Verde. |
| Este trabalho objetivou caracterizar biometricamente sementes e frutos de Hymenaea courbaril L. e determinar o grau de umidade, bem como avaliar diferentes tratamentos de superação de dormência. Foram determinados a biometria, a massa de frutos e sementes e o número de sementes por fruto. As sementes foram submetidas aos seguintes cortes: 1-testemunha, sem escarificação ou corte; 2-escarificação em três faces; 3-corte ao meio e 4-corte em quatro partes. Avaliou-se também o percentual de emergência, o IVE, o comprimento da parte aérea e da raiz de plântulas. Para isso, as sementes foram submetidas à superação de dormência, com e sem embebição em água, pelos seguintes tratamentos: I-escarificação do lado oposto ao hilo; II-escarificação em uma lateral;... |
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Palavras-chave: 5.02.01.04-2 Hymenaea courbaril; Espécie florestal; Emergência de plântulas Sementes Florestais Hymenaea courbaril; Forestry species; Seedling emergence. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3681 |
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| Díaz Martínez, María Esther. |
| En este trabajo se evaluó la germinación de semillas y el crecimiento de plantas de C. equisetifolia L. ante diesel, y su potencial de fitorremediación en combinación de bioaumentación y bioestimulación. La primera fase experimental evaluó el efecto tóxico de 15 dosis de diesel (0, 100, 250, 500, 800, 1000, 1500, 2000, 2500, 3000, 5000, 7500, 10000, 15000 y 20000 mg kg-1) en la germinación de semillas y la emergencia de plántulas. A los 10 días, la germinación fue mayor en concentraciones altas de diesel; la mayor geminación ocurrió en 20000 mg kg-1, y la menor se registró ante 5000 mg kg-1. La emergencia de plántulas fue mayor en las concentraciones menores a 5000 mg kg-1. A los 15 días, el crecimiento de las plántulas disminuyó ante concentraciones... |
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Palavras-chave: Germinación; Emergencia de plantas; Simbiosis; Fertilización; Microorganismos; Degradación de hidrocarburos; Seed germination; Seedling emergence; Symbiosis; Fertilization; Microorganisms; Hydrocarbon degradation; Maestría; Edafología. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/730 |
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| Ali,H.H.; Tanveer,A.; Nadeem,M.A.; Asghar,H.N.; Javaid,M.M.. |
| Rhynchosia capitata is becoming an increasing problem in summer crops, such as cotton, soybean, pearl millet and mungbean in many Asian countries. Laboratory and greenhouse studies have been conducted to determine the effects of several environmental factors on seed germination patterns and seedling emergence of R. capitata. We investigated whether the diverse ecological factors such as temperature, light, salinity, moisture stress, pH, and soil depth affected germination and seedling emergence of R. capitata. Germination increased as temperature increased from 25ºC and significantly reduced at 45ºC. Presence or absence of light did not influence germination. Germination of R. capitata was sensitive to increased salt and moisture stress, as well as to seed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Moisture stress; PH; Salinity; Seedling emergence; Burial depth. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200002 |
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| Galicia-Juárez, Marisol; Mendoza-Onofre, Leopoldo Ernesto; González-Hernández, Víctor Arturo; Cisneros-López, María Eugenia; Benítez-Riquelme, Ignacio; Córdova-Téllez, Leobigildo. |
| The aim of this research was to compare genetic parameters for traits related with seed germination and seedling vigour of single cross (SCH) vs. three-way (TWH) sorghum hybrids. The study was conducted in a sand bed under a greenhouse; 67 genotypes (four pairs of A- and B- lines, four R- lines, 13 SCH and 42 TWH) were allocated in a randomized complete blocks experimental design with three replications. Statistical analysis included ANOVA’s and Student “t” tests, while Tukey test (p £ 0.05) was applied for mean comparisons. The R-lines showed better physiological seed quality attributes than the A- and B- lines. The seed quality and heterosis values of SCH vs. that of TWH did not show significant differences (p > 0.05) for any variable; however,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sorghum bicolor L. Moench; Maternal effects; Seedling emergence; Sorghum lines; Top-cross tests.. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31198 |
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| Çalişkan, Oguzhan; Faculty of Agriculture, University of Mustafa Kemal; Mavi, Kazim; Faculty of Agriculture, University of Mustafa Kemal; Polat, Aytekin; Faculty of Agriculture, University of Mustafa Kemal. |
| Seed germination of fig seeds is important for obtain seedlings with high variability in breeding studies, and for producing mosaic virus-free seedlings. This experiment was carried out to evaluated the effects of several treatments (priming with water for 24h, GA3 at 500 and 1000 ppm for 24h, 3% KNO3 for 24h, and stratification at 4°C for 7, 14 and 21 days) on seed germination and emergence of ‘Bursa Siyahı’ and ‘Sarılop’ fig cultivars. The application of GA3 increased the germination and emergence of these fig seeds. The highest percentages of germination and emergence were obtained with GA3 at 500 or 1000 ppm for both cultivars. The seed germination and emergence of the cultivar ‘Bursa Siyahı’ were higher than observed with the ‘Sarılop’. The... |
| Tipo: Laboratory analysis |
Palavras-chave: Ficus carica L.; Fig; Seed germination; Seedling emergence; Seed treatments seed germination and emergence Horticulture Ficus carica L.; Fig; Seed; Germination; Seedling emergence; Seed treatments seed germination and emergence. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13392 |
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| Pereira,Márcio Dias; Dias,Denise Cunha Fernandes dos Santos; Dias,Luiz Antônio dos Santos; Araújo,Eduardo Fontes. |
| Uniformity and percentage of seedling emergence of direct-seeded vegetables have a major impact on their yield and quality. Depending on temperature and soil water potential, carrot seeds performance in the field is poor justifying the use of techniques to accelerate the germination and seedling emergence. The objective of this work was to evaluate the effects of priming treatments, with and without aeration, on carrot seeds performance under water and temperature stress. Two seed lots of carrots, Brasília cultivar, were primed in PEG 6000 -1.0 and -1.2 MPa solutions, for four and eight days, at 20ºC, using two imbibition methods: priming in paper towel moistened with the respective solutions and immersion into aerated osmotic solutions. Non-primed seeds... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota L.; Priming; Seedling emergence; Vigor. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200005 |
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| Bejandi,Teymur Khandan; Sedghi,Mohammad; Sharifi,Raouf Seyed; Namvar,Ali; Molaei,Peyman. |
| The objective of this work was to determine the effects of seed priming and sulfur application on cell membrane characteristics, seedling emergence, chlorophyll content and grain yield of soybean (Glycine max) in saline soil. A complete-block design in 4x3 factorial arrangement with three replicates was used to test four types of seed priming (water, auxin, gibberellin and non-priming) and three levels of sulfate availability (0, 70 and 140 kg ha-1 K2SO4). The soil had a silty loam texture with an electrical conductivity of 3.61 ds m-1, a pH of 8.2 and a saturation percentage of about 46%. Seed priming had significant effects on mean emergence rate (MER), emergence percentage, relative water content (RWC) of leaves, relative chlorophyll content, time of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Chlorophyll content; Environmental stress; Injury index; Seedling emergence. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000900007 |
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| Murcia,Mónica; Peretti,Anna; San Martino,Silvina; Pérez,Alejandra; del Longo,Olga; Argüello,Juan; Pereyra,Victor. |
| Sunflower crop was based, as yet, on high linoleic cultivars, but in the last years request for oil with higher content of oleic acid has increased, due to their dietary characteristics. At the beginning, high oleic cultivars were used to be sown in warm regions, but then the concern about growing it in temperate areas, as the south-east of Buenos Aires Province, was posed. In this region, early sowings are recommended, so that grain filling matches with a period of appropriate hydric and light conditions, as to result in greater yields. However, early sowings are limited by low soil temperature, that delays seedling emergence, resulting in heterogeneous stand establishment. The aim of this work was to evaluate seed performance of four high oleic cultivars... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigor; Sunflower; "high oleic"; Early sowing; Seedling emergence. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222002000100018 |
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| Registros recuperados: 15 | |
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