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Abiotic alterations caused by forest fragmentation affect tree regeneration: a shade and drought tolerance gradient in the remnants of Coastal Maulino Forest RChHN
GUERRERO,PABLO C; BUSTAMANTE,RAMIRO O.
Plant regeneration is strongly determined by light and soil moisture differences between habitáis; both variables are modified by large-scale forest fragmentation. Several studies have indicated this alteration as the mechanism involved in tropical forest community change. The effects of fragmentation may be much more severe in Mediterranean and deciduous forests, because plant species in these forests show a stress tolerance tradeoff between shade and drought. Our study was performed in the deciduous fragmented Coastal Maulino Forest: Reserva Nacional Los Queules (RNLQ) and surrounding small fragments. We hypothesised that Aristotelia chilensis (shade intolerant but drought tolerant) should increase its regeneration in small patches as a consequence of...
Tipo: Journal article Palavras-chave: Ecological restoration; Forest fragmentation; Safe sites; Seed germination; Seedling establishment.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000300008
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Achene dimorphism in Bidens pilosa L. (Asteraceae) as determined by germination test BABT
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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Advances in passion fruit (Passiflora spp.) propagation. Repositório Alice
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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Advances in passion fruit (Passiflora spp.) propagation Rev. Bras. Frutic.
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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Applicability of the tetrazolium test to coffee seeds with different types and levels of stresses. Repositório Alice
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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Armazenamento de caupi a nivel de fazenda. Repositório Alice
AGUIAR, P. A. A.; MORAES, G. J. de.
Sementes de caupi foram armazenadas com um leve ataque de gorgulho, por um periodo de doze meses, sob condicoes de baixa umidade relativa a temperatura elevada do tropico semi-arido do Nordeste do Brasil. Foram utilizadas as seguintes embalagens: 1 caixa de amianto com cobertura de areia grossa; 2. silo metalico vedado com cera de abelha; 3. silo subterraneo com revestimento de plastico; 4. saco de juta com sementes pulverizadas com oleo de milho; 5. saco de juta. Constatou-se um grande ataque do gorgulho nas embalagens de juta durante o armazenamento, enquanto que as demais embalagens ofereceram uma boa protecao ao ataque da praga, principalmente a caixa de amianto com areia.
Tipo: Artigo de periódico Palavras-chave: Caupi; Armazenagem; Feijão caupi.; Callosobruchus Maculatus; Germinação; Gorgulho; Semente; Feijão de Corda.; Germination; Storage; Vigor; Seed germination; Seed dormancy; Cowpeas..
Ano: 1983 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/131328
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'Aroeira-branca' [Lithraea molleoides (Vell.) Engl. - Anacardiaceae] seed quality evaluation by the X-ray test Scientia Agricola
Machado,Cibele Ferreira; Cícero,Sílvio Moure.
'Aroeira-branca', an arboreal species of great ecological and economic importance, is seed propagated and presents limitations with respect to the availability of methods for seed quality evaluation. The X-ray test has been considered of potential value because it is accurate, quick and nondestructive. In this context, the objective of this work was to verify the possibility of this test to detect damage and/or abnormalities in aroeira-branca embryos, in an attempt to correlate these anomalies to germination. Four seed lots were collected in different locations in the southern region of the State of Minas Gerais, Brazil, during 2001. The X-ray test consisted of submitting 100 seeds/lot to radiation (exposure of seeds to radiation of 13 kV/5 minutes) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Radiography; Embryo morphology; Seed germination; Forest species.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200026
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Avaliação da temperatura na germinação de sementes de algodão colorido. Repositório Alice
NASCIMENTO, I. C. M.; REIS, J. J. da S.; SILVA, O. R. R. F.; FRANÇA, P. R. C. de; ARAÚJO, B. M. N..
objetivou-se com este trabalho avaliar a capacidade fisiológica das sementes de algodão colorido cultivar BRS Rubi, sob a influência de diferentes temperaturas e do umedecimento do substrato.
Tipo: Parte de livro Palavras-chave: Semente; Qualidade; Fisiologia Vegetal; Germinação; Gossypium Hirsutum; Cotton; Seed quality; Seed germination; Plant physiology.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107143
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Bioestimulante na germinação de sementes de açaizeiro (Euterpe precatoria Mart.). Repositório Alice
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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Bioremediation of dyes by fungi isolated from contaminated dye effluent sites for bio-usability BJM
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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Calculating germination measurements and organizing spreadsheets Rev. Bras. Bot.
Ranal,Marli A.; Santana,Denise Garcia de; Ferreira,Wanessa Resende; Mendes-Rodrigues,Clesnan.
With the objective to minimize difficulties for beginners we are proposing the use of a conventional spreadsheet for the calculations of the main germination (or emergence) measurements, the organization of the final data for the statistical analysis and some electronic commands involved in these steps.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Germination rate; Germination time; Seed germination; Synchrony; Uncertainty.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000400022
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Can reproductive traits contribute to the success of ecological restoration? Repositório Alice
PIERRY, R. B.; GUARINO, E. de S. G.; JARENKOW, J. A..
Direct sowing has been proposed as an alternative to planting seedlings because of its low cost. However, there are still few works with direct seeding that aim to select species that best respond to the technique. Therefore, we carried out a direct sowing study with native tree species of the Semideciduous Seasonal Forest in Southern Brazil (Serra do Sudeste, State of Rio Grande do Sul).
Tipo: Parte de livro Palavras-chave: Floresta sazonal semidecidual; Serra do Sudeste (RS); Rio Grande do Sul; Siembra directa.; Bosques caducifolios; Germinación de las semillas; Plantas de semilleros; Restauración ecológica; Essência florestal; Floresta nativa; Reflorestamento; Muda; Plantio direto; Germinação; Poder germinativo; Ecological restoration; Seedlings; Direct seeding; Seed germination; Deciduous forests..
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078378
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Capacidade fisiológica de sementes de algodão colorido sob à influência do deslintamento. Repositório Alice
ARAÚJO, B. M. N.; FRANÇA, P. R. C. de; REIS, J. J. da S.; NASCIMENTO, I. C. M.; SILVA, O. R. R. F..
Avaliação da capacidade fisiológica das sementes de algodão colorido, cultivar BRS Rubi, sob a influência do seu deslintamento e do umedecimento do substrato.
Tipo: Parte de livro Palavras-chave: Semente; Qualidade; Fisiologia Vegetal; Germinação; Gossypium Hirsutum; Seed quality; Plant physiology; Seed germination.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107141
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Características fisiológicas da semente: vigor, viabilidade, germinação, danos mecânicos tetrazólio, deterioração por umidade tetrazólio, dano por percevejo tetrazólio e sementes verdes. Repositório Alice
FRANÇA-NETO, J. B.; KRZYZANOWSKI, F. C.; PADUA, G. P. de; LORINI, I..
A listagem de referências corresponde ao livro como um todo.
Tipo: Parte de livro Palavras-chave: Aspecto Fisiológico; Teste de Sementes; Semente; Patologia de Semente; Soja; Soybeans; Seed germination; Seed insects; Seed maturation; Seed pathology; Seed quality; Physiology.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098335
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Casuarina equisetifolia fitorremeciación de suelo contaminado con diesel y aplicación de bioestimulación y bioaumentación. Colegio de Postgraduados
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...
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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Changes in reserve mobilization caused by salinity could interfere in the initial growth of Jatropha curcas. Repositório Alice
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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Comparação entre métodos de avaliação da germinação pré-colheita em trigo. Repositório Alice
FRONZA, V.; BASSOI, M. C.; PRANDO, A. M.; MIRANDA, M. Z..
Tipo: Parte de livro Palavras-chave: Trigo; Germinação; Seed germination; Wheat.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/857994
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COMPETITIVE EFFECTS OF THE ALIEN INVASIVE CENTAUREA SOLSTITIALISL. ON TWO CHILEAN BACCHARIS SPECIES AT DIFFERENT LIFE-CYCLE STAGES Gayana Botánica
Gómez-González,Susana; Cavieres,Lohengrin A; Torres,Patricio; Torres-Díaz,Cristian.
Several studies have revealed a variety of mechanisms of invasion of alien plant species. However, little is known on how those mechanisms and their associated effects on native species change across different life-cycle stages. Under controlled conditions, we assessed the interactions between the alien invasive species Centaurea solstitialis L. (Asteraceae) and two pioneer native species to the Chilean matorral; Baccharis linearis (Ruiz et Pav.) Pers. and B. paniculata DC. (Asteraceae). Competitive effects of the invader on natives were evaluated by combining different life-cycle stages: seed-seed, plant-seed, and plant-plant. Seed germination of C. solstitialis was explosive and much faster than that of the native species. The presence of C. solstitialis...
Tipo: Journal article Palavras-chave: Allelopathy; Matorral; Mediterranean; Seed germination; Yellow starthistle.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432009000100007
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Conditions for the germination and the early growth of seedlings of Polaskia chichipe (Goss.) Backeberg and Echinocactus platyacanthus Link and Otto fa. grandis (Rose) Bravo-Hollis (Cactaceae): (with 2 tables & 2 figures) Phyton
Rosas-López,Ulises; Collazo-Ortega,Margarita.
The effect of different combinations of chemical scarification, soaking and substrates (ex vitro and in vitro) on seed germination ofPolaskia chichipe (Goss.) Backeberg and Echinocactus platyacanthus Link & Otto fa. grandis (Rose) Bravo-Hollis, collected in the Tehuacan Valley, Mexico, were studied. The P chichipe seeds did not require either chemical scarification or soaking, whereas E platyacanthus required chemical scarification with strong acids. Growth and maintenance of the seedlings was evaluated in two different concentrations of Murashige-Skoog medium (50% and 100% of their components). It was found that MS 50% stimulated germination in both species and promoted seedling growth.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Polaskia chichipe; Echinocactus platyacanthus; Cacti; Seed germination; Establishment; Seedling growth.
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100026
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Desempenho fisiológico de sementes de soja submetidas ao teste de envelhecimento acelerado e postas a germinar após vários períodos de espera. Repositório Alice
RODRIGUES, M.; KRZYZANOWSKI, F. C.; FRANÇA-NETO, J. B.; LORINI, I.; HENNING, A. A.; HENNING, F. A..
Tipo: Parte de livro Palavras-chave: Soja; Semente; Envelhecimento Precoce; Germinação; Aspecto Fisiológico; Soybeans; Seed germination; Seeds; Physiology.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093945
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