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| Registros recuperados: 114 | |
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| Amaral,Adriana; Takaki,Massanori. |
| The germination of achenes of Bidens pilosa L. was analyzed during the life span of the mother plant. Decrease in the range of achene size was monitored until the senescence of the mother plant when the shortest achenes were harvested. The analysis of the germination percentage confirmed the presence of two distinct classes, formerly defined as short and long ones. Because length can not be used for the separation of those classes, the morphological characteristics of the tegument, specially of the ornament must be used for separation of the achenes with verrucose tegument (formerly named as short achenes) and achenes without ornament of the tegument (formerly named as long achenes). The achenes with verrucose tegument presented dormancy and light... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bidens pilosa; Seed dimorphism; Phytochrome; Seed germination. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000100002 |
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| FALEIRO, F. G.; JUNQUEIRA, N. T. V.; JUNGHANS, T. G.; JESUS, O. N. de; MIRANDA, D.; OTONI, W. C.. |
| The propagation of many passion fruit species (Passiflora spp.) is done by seeds or sexual method, although asexual propagation, such stem cuttings, grafting or tissue culture is also possible and very useful in many cases. In this work, it was presented information on scientific and technological advances in sexual and asexual propagation of passion fruit, considering the different propagation methods and their applications. New demands for research and development activities are also related, given the wide range of passion fruit species and its potential for food, ornamental and medicinal use. |
| Tipo: Artigo de periódico |
Palavras-chave: Maracujá; Germinação; Propagação Vegetativa; Estaca; Planta Porta-Enxerto; Cultura de Tecido; Seed germination; Vegetative propagation; Plant cuttings; Grafting (plants); Tissue culture. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114508 |
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| Faleiro,Fábio Gelape; Junqueira,Nilton Tadeu Vilela; Junghans,Tatiana Góes; Jesus,Onildo Nunes de; Miranda,Diego; Otoni,Wagner Campos. |
| Abstract The propagation of many passion fruit species (Passiflora spp.) is done by seeds or sexual method, although asexual propagation, such stem cuttings, grafting or tissue culture is also possible and very useful in many cases. In this work, it was presented information on scientific and technological advances in sexual and asexual propagation of passion fruit, considering the different propagation methods and their applications. New demands for research and development activities are also related, given the wide range of passion fruit species and its potential for food, ornamental and medicinal use. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed germination; Vegetative propagation; Cuttings; Grafting; Tissue culture. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000201002 |
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| FANTAZZINI, T. B.; ROSA, S. D. V. F. da; COELHO, S. V. B.; SOUSA, P. H. A.; PEREIRA, D. de S.; VILELA, A. L. de O.; RIBEIRO, F. A. S.. |
| For sale or use of coffee seeds after harvest, the coffee grower must have information regarding their initial quality, which must meet the standards established in the Sistema Nacional de Sementes e Mudas (SNSM). However, slow germination of coffee seeds makes it difficult to obtain results from evaluation of the seed physiological quality. An alternative for quick evaluation of coffee seed viability is the tetrazolium test. However, there are still questions regarding the true potential of the test for estimating the quality of seed lots with different levels of quality. The aim of this study was to eval-uate the applicability of the tetrazolium test in estimating the viability of coffee seeds with different types of stress and levels of quality. Seeds... |
| Tipo: Artigo de periódico |
Palavras-chave: Seed germination; Quality control; Coffea arabica var. arabica. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150878 |
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| GUILHERME, J. P. M.; BRITO, J. F. de F. de; ANDRADE NETO, R. de C.; LUNZ, A. M. P.; ARAÚJO, C. S. de; SANTOS, R. S. dos. |
| Embora o consumo do açaí tenha crescido sobremaneira durante os últimos anos, a oferta deste parece evoluir em ritmo inferior, o que tem despertado o interesse de produtores no cultivo do açaizeiro e, consequentemente, intensificado a procura por mudas de qualidade. Contudo, o mecanismo de propagação dessa espécie é por meio de sementes, que apresentam germinação lenta e desuniforme, indicando a existência de algum mecanismo de dormência atuando na germinação destas. O presente trabalho teve como objetivo avaliar o uso de um bioestimulador na germinação de sementes e biomassa de plântulas de Euterpe precatoria Mart. |
| Tipo: Parte de livro |
Palavras-chave: Cinetina; Citocinina; Giberelina; Germinación de las semillas; Experimentación en invernadero; Sustancias de crecimiento vegetal; Citoquininas; Açaí; Semente; Germinação; Estufa; Regulador de Crescimento; Ácido Indolbutírico; Auxina; Ácido Giberélico; Euterpe precatoria; Seed germination; Greenhouse experimentation; Plant growth substances; Auxins; Indole butyric acid; Gibberellins; Gibberellic acid; Cytokinins. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099286 |
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| Rani,Babita; Kumar,Vivek; Singh,Jagvijay; Bisht,Sandeep; Teotia,Priyanku; Sharma,Shivesh; Kela,Ritu. |
| Biodegradation and detoxification of dyes, Malachite green, Nigrosin and Basic fuchsin have been carried out using two fungal isolates Aspergillus niger, and Phanerochaete chrysosporium, isolated from dye effluent soil. Three methods were selected for biodegradation, viz. agar overlay and liquid media methods; stationary and shaking conditions at 25 °C. Aspergillus niger recorded maximum decolorization of the dye Basic fuchsin (81.85%) followed by Nigrosin (77.47%), Malachite green (72.77%) and dye mixture (33.08%) under shaking condition. Whereas, P. chrysosporium recorded decolorization to the maximum with the Nigrosin (90.15%) followed by Basic fuchsin (89.8%), Malachite green (83.25%) and mixture (78.4%). The selected fungal strains performed better... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioremediation; Dyes; Fungi; Microbial bioassay; Seed germination. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300039 |
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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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| LIRA, E.; SOUZA, J.; GALDINO, L.; MACÊDO, C.; SILVA, A.; MELO, Y.; SANTOS, I.; ARRIEL, N. H. C.; MENESES, C.; MAIA, J.. |
| Salinity in soil can affect Jatropha seedling metabolism, interfering with plant establishment. In this study, the effect of salinity on the mobilization of reserves during the development of Jatropha seedlings was tested. Two genotypes of Jatropha were used and three concentrations of NaCl were applied between the 4th and 8th days after germination. The effects of salinity on seedling growth, in terms of fresh and dry phytomass, ionic partition, and sugar quantification, starch, proteins, amino acids, and lipids were evaluated in cotyledon leaves, hypocotyls, and roots. There was an increase in the content of all classes of macromolecules analyzed in at least one of the organs. It is hypothesized that the hypocotyls acted as an accumulating organ of Na+.... |
| Tipo: Artigo de periódico |
Palavras-chave: Partition of macromolecules; Pinhão-manso; Salinidade; Jatropha Curcas; Soil salinity; Seed germination. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139691 |
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| Registros recuperados: 114 | |
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