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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 em periódico indexado (ALICE) 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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'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: Artigo em anais de congresso (ALICE) 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: Artigo em anais de congresso (ALICE) 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: Resumo em anais de congresso (ALICE) Palavras-chave: Floresta sazonal semidecidual; Serra do Sudeste (RS); Rio Grande do Sul; Essência florestal; Floresta nativa; Reflorestamento; Muda; Plantio direto; Germinação; Poder germinativo; Ecological restoration; Seedlings; Direct seeding; Seed germination; Deciduous forests; Restauración ecológica; Plantas de semilleros; Germinación de las semillas; Siembra directa; Bosques caducifolios.
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: Artigo em anais de congresso (ALICE) 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..
bitstream/item/185234/1/p-31-59.pdf
Tipo: Capítulo em livro científico (ALICE) 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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Comparação entre métodos de avaliação da germinação pré-colheita em trigo. Repositório Alice
FRONZA, V.; BASSOI, M. C.; PRANDO, A. M.; MIRANDA, M. Z..
2009
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Trigo; Germinação; Seed germination; Wheat.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/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..
2016
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Teste de semente; Germinação; Semente; Qualidade; Soja; Seed germination; Soybeans; Seed quality.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1052198
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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..
bitstream/item/181117/1/p-983-985-CBSoja-2018.pdf
Tipo: Artigo em anais de congresso (ALICE) 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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Development of artificial sugarcane seed CP-54 from three cultivars (cv MEX 69-290; cv MEX 68-P-23; cv. CP 72-2086) using polymers in Tabasco, Mexico Acta Agron. (Palmira)
Álvarez-Sánchez,Geiner F; Arias-de la Cruz,Heidi L; Salgado-García,Sergio; Córdova-Sánchez,Samuel; Ortiz-Laurel,Hipólito; Castelán-Estrada,Mepivoseth; García-de la Cruz,Rubén; Castañeda-Ceja,Raúl.
Abstract Precision mechanized sowing of sugarcane has been delayed due to germination failures caused in sowing process by pieces of sugarcane, generating economic losses by reducing production. The aim of this study was to evaluate different polymers and cultivars of sugarcane to elaborate artificial seed CP-54, seed germination and quality of sugarcane plants. An experiment was carried out in two stages in experimental field of the Colegio de Postgraduados Campus Tabasco, Mexico. Results indicate that the best physical stage of artificial seed CP-54 was obtained in Mex 69-290, Mex 68-P-23 and CP 72-2086 cultivars encapsulated with starch polymers and sodium alginate. Artificial seed CP-54 germination was 100 and 84% encapsulated with starch and alginate...
Tipo: Journal article Palavras-chave: Encapsulation; Precision agriculture; Saccharum spp.; Seed germination; Buds; Sugarcane response.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100094
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Direct seeding of dry forest tree species in abandoned pastures: effects of grass canopy and seed burial on germination. Repositório Alice
GUARINO, E. de S. G.; SCARIOT, A. O..
Natural tree regeneration in abandoned pastures can be hampered by various biotic and abiotic filters, including seed removal and predation. We tested the effects of maintenance and removal of grass and seed deposition (buried and unburied) on seed germination of 12 tree species in dry forest pastures. We obtained evidence supporting the hypothesis that seeds attain higher germination under a grass canopy than on bare ground. For most species, grass cover provides safety from seed predators and facilitates germination by providing a suitable microclimate with soil humidity similar to the forest. The hypothesis that buried seeds attain higher germination was not supported by our data. Predation and removal of unburied seeds ranged from 0 to 77 % and, alone...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Floresta seca; Floresta; Regeneração natural; Degradação do solo; Pastagem; Semente; Poder germinativo; Cobertura do solo; Semeadura direta; Dry forests; Land degradation; Pastures; Natural regeneration; Direct seeding; Seed germination; Bosques secos; Degradación de la tierra; Pastizales; Regeneración natural; Siembra directa; Germinación de las semillas.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/998986
Registros recuperados: 113
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