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| Registros recuperados: 65 | |
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| Cordazzo,César Vieira. |
| The effects of different salinities on the germination of Spartina ciliata seeds were tested during 40 days in the laboratory, using six concentrations of NaCl (0,45, 80, 130, 170 and 215 mM) besides three concentrations of seawater (25,30 and 35‰). In addition, the survival and growth of seedlings were tested in five constant salinity regimes (0,45, 80 and 170 mM NaCl) as well as in five regimes of simulating seawater overwash. The results showed that seeds possed a high germination capacity over a wide range of salinities (0 to 215 mM NaCl). Although concentrations close to full-strength seawater completely inhibited seed germination, the transfer of the ungerminated seeds to freshwater immediately stimulated this. The effects of salinity on seedling... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salinity stress; Seed germination; Seedling growth; Coastal dune plant; Spartina ciliata. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000300012 |
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| Ferreira,Paulo Henrique Gonçalves; Nunes,Yule Roberta Ferreira; Faria,Maurício Lopes; Brandão,Murilo Malveira; Costa,Cibele Stramare Ribeiro; Valério,Henrique Maia; Melo,Geraldo Aclécio; Pimenta,Marcio Antonio Silva. |
| ABSTRACT Seed predation is a natural phenomenon that can occur either before or after dispersal and can significantly reduce the economic value and reproductive potential of plants. The babassu palm (Attalea vitrivir, Arecaceae) is important to rural communities that extract oil from its fruits for a wide variety of uses. We evaluated the predation and germination of A. vitrivirseeds in Pandeiros River Environmental Protection Area (EPA-Pandeiros) in Minas Gerais State, Brazil. Sixty individual plants were evaluated to determine their fruiting patterns. Seed predation and germination were evaluated in the natural environment for eight months for fruits divided into two treatments: scarified and intact. Germination of fruits submitted to these same... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arecaceae; Attalea vitrivir; Babassu palm; Fruit; Seed germination; Seed predation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000400658 |
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| Fernandes,Elio Gomes; Valério,Henrique Maia; Duarte,Karen Luiza Rodrigues; Capuchinho,Lauany Matos de Novais; Fagundes,Marcílio. |
| ABSTRACT Copaifera oblongifolia is a recurrent plant species in degraded areas yet there is little information about its seed biology and interactions with fungi. The aims of this study were to identify the fungal community (endophytic and non-endophytic) associated with C. oblongifolia seeds and to test the effects of these different fungal species on germination. In general, germination of C. oblongifolia seeds was high (about 85 %), initiating four days after sowing and continuing for a total of 20 days. External asepsis with sodium hypochlorite did not influence germinability of C. oblongifolia. Seed infestation with Aspergillus niger, A. flavus, Mucor sp. and Rhizopus stolonifer did not affect the time required for germination, however, infection with... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Endophytic classification; Endophytic fungi; Saprophytic fungi; Seed germination; Seed-fungus interactions. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100179 |
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| Binotti, Flávio Ferreira da Silva; UNESP; Haga, Kuniko Iwamoto; UNESP; Cardoso, Eliana Duarte; UNESP; Alves, Charline Zaratin; UNESP; Sá, Marco Eustáquio de; UNESP; Arf, Orivaldo; UNESP. |
| A qualidade das sementes colocadas à disposição do produtor é de grande importância para obtenção de altas produtividades. O objetivo do trabalho foi avaliar os efeitos causados por diferentes períodos de envelhecimento artificial na lixiviação de açúcares, proteínas, aminoácidos e íons no exsudato do teste de condutividade elétrica, e suas relações com a germinação e vigor de sementes de feijão da cultivar Pérola. O trabalho foi conduzido no Laboratório da FE de análises de sementes - Unesp Campus de Ilha Solteira. O delineamento experimental foi o inteiramente casualizados, sendo que as sementes foram submetidas a oito períodos de envelhecimento acelerado (zero, 24, 48, 72, 96, 120, 144 e 168 horas). A germinação e vigor de sementes de feijão cultivar... |
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Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Phaseolus vulgaris L.; Lixiviados; Proteínas; Íons; Germinação; Vigor 5.01.03.05-9 Melhoramento Vegetal Phaseolus vulgaris L.; Leakage; Protein; Ions; Seed germination; Vigor. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1736 |
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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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| Pacheco-Aguirre,J. Alberto; Ruíz-Sánchez,Esau; Ballina-Gómez,H. Salomón; Alvarado-López,C. Juan. |
| Abstract Various studies have been undertaken to evaluate the effect of polymer-based encapsulation on performance of plant growth promoting microorganism. However there is no systematic analysis about the performance of these microorganisms when encapsulated in a polymer-based matrix. Relevant published papers were retrieved by conducting searches in Google Scholar, Only Library, Science Direct, Springer Journal, Taylor & Francis and Wiley Online Library. An examination of 117 articles was carried out and of those only 11 satisfied our criteria for inclusion into the meta-analysis. From these articles, we selected 41 cases to be evaluated. We used as keywords “microcapsules”, “capsules”, “microorganisms”, “growth”, “promoting”, “germination”... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus sp.; Inoculant; Microcapsules; Plant growth; Seed germination. |
| Ano: 2017 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200173 |
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| SILVA,EWERTON A.S. DA; LÔBO,LÍVIA T.; SILVA,GEILSON A. DA; SOUZA FILHO,ANTONIO PEDRO DA S.; SILVA,MILTON N. DA; ARRUDA,ALBERTO C.; GUILHON,GISELLE M.S.P.; SANTOS,LOURIVALDO S.; ARRUDA,MARA S.P.. |
| In some previous studies, we described the isolation of nine compounds from leaves of Derris urucu, a species found widely in the Amazon rainforest, identified as five stilbenes and four dihydroflavonols. In this work, three of these dihydroflavonols [urucuol A (1), urucuol B (2) and isotirumalin (3)] were evaluated to identify their potential as allelochemicals, and we are also reporting the isolation and structural determination of a new flavonoid [5,3′-dihydroxy-4′-methoxy-(7,6:5″,6″)-2″,2″-dimethylpyranoflavanone (4)]. We investigated the effects of the dihydroflavonols 1-3 on seed germination and radicle and hypocotyl growth of the weed Mimosa pudica, using solutions at 150 mg.L–1. Urucuol B, alone, was the substance with the greatest potential to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Derris urucu; Flavonoids; Allelopathy; Development of weeds; Seed germination. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300881 |
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| Luber,Jaquelini; Palmieri,Marcel J.; Botelho,Carolina M.; Rinaldo,Daniel; Andrade-Vieira,Larissa F.. |
| Guava (Psidium guajava L.) is a plant often employed in popular medicine. Recently several studies have alerted about the toxicity of substances present in medicinal plants, which can pose risks to the human health. In this sense, the present work aimed to investigate the phytotoxic, cytotoxic and genotoxic action of three guava varieties - Paluma, Pedro Sato and Roxa ("purple") - on the plant test system Lactuca sativa L. Thus, macro- and microscopic evaluations were carried out for five infusion concentrations (2.5, 5.0, 10.0, 20.0 and 40.0 g.L-1) prepared from each variety. Distilled water was used as negative control. Chromatographic and spectroscopic analysis by HPLC-PAD indicated that the chemical composition of the infusion of Roxa is different than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citogenetoxicity; Root growth; Mitotic index; Seed germination; IC50. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200903 |
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| Bevilaqua,Maycon R.R.; Santana Filho,Arquimedes P.; Mangolin,Claudete A.; Oliveira,Arildo J.B.; Machado,Maria De Fátima P.S.. |
| The purpose of this study was to evaluate the chemical, physiological and genetic differences in seeds of cactus of the Cereus genus (mandacaru) cultivated in the Northeast (Picos, State of Piauí) and Southern (Maringá, State of Paraná) regions of Brazil. Over a period of eight days, temperatures of 25°C and 30°C were equally efficient for the germination of all the seeds. Oleic acid (C18:1) was the most common fatty acid found in the seeds collected in the Southern (41%) and Northeast (45.5%) regions. The analysis of lipases indicated that seeds from Maringá have high mean observed and expected heterozygosities and that seeds from Picos have a higher number of alleles per loci. Therefore, the seeds of mandacaru from the semiarid region of Northeast as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cactus; Cereus peruvianus; Cereus jamacaru; Seed germination; Fatty acids; Lipases; Genetic diversity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200765 |
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| Cantor,Mauricio; Ferreira,Letícia Andrade; Silva,Wesley Rodrigues; Setz,Eleonore Zulnara Freire. |
| Urban forests are usually isolated and highly disturbed, however they are important shelters for tolerant animal species. Their food habits expose the different ecological roles these animals perform in the habitat. We analyzed the contribution of Didelphis albiventris Lund (1840), as a seed disperser, to the vegetation renewal of an urban forest fragment, describing its frugivorous diet and testing the viability of ingested seeds. Both male and female of white-eared opossum included a vast variety of items in their diet, mainly invertebrates and fruits. Fruits were consumed during all year round and seasonality was not observed. The majority of consumed fruits was from pioneer plant species, which is common in disturbed areas, in accordance to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Didelphimorphia; Seed dispersal; Seed germination; Forest restoration; Remnant forest; Didelphis albiventris. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000200004 |
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| Simão,Edson; Takaki,Massanori. |
| The effect of light and temperature on Tibouchina mutabilis seed germination was analyzed by isothermic incubations in the range of 10 to 40 °C, with 5 °C intervals under both continuous white light (32.85 µmolm-2s-1) and darkness and alternating temperatures (15-20; 15-25; 15-30; 15-35; 20-25; 20-30; 20-35; 25-30; 25-35 and 30-35 °C) under both photoperiod of 12 hours and continuous darkness. The seeds of T. mutabilis need light to trigger the germination and no germination was observed in darkness. The range of optimum temperatures for germination was between 25 to 30 °C and the 20-25 °C alternating temperatures. These results indicate that T. mutabilis behaves as a pioneer species and daily alternating temperatures did not change the light sensitivity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Light; Phytochrome; Seed germination; Tibouchina. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000200006 |
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| Registros recuperados: 65 | |
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