In Vitro Morphogenesis
Mostrando 25-36 de 229 artigos, teses e dissertações.
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25. Influência do etileno e de poliaminas sobre a morfogênese in vitro do maracujá (Passiflora sp.) / Morphogenesis in vitro of passion fruit (Passiflora sp.) as affected by ethylene and polyamines
The present study was conducted to evaluate possible interactions between ethylene and polyamines levels upon in vitro morphogenesis of two passion fruit species (Passiflora cincinnata Masters and P. edulis Sims f. flavicarpa Degener, population FB-100). Hypocotyl-derived segments (average 10 mm length) were cultivated in MS-based medium, with B5 vitamin com
Publicado em: 2006
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26. Cytokinin in anatomical, cytological and physiological processes during in vitro culture and aclimatization of Annona glabra L. / Citocininas nos processos anatÃmicos, citolÃgicos e fisiolÃgicos durante o cultivo in vitro e aclimatizaÃÃo de Annona glabra L.
Annona glabra L. is one of the most important wild annonaceae with a high potential to produce fruits and pharmacological compounds. In vitro cultivation is a viable alternative for large scale production of plantlets of this species, overcoming the natural constraints for its propagation. However, its use in a broad form has been limited by the difficulty t
Publicado em: 2006
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27. TISSUE CULTURE AND b-ECDYSONE PRODUCTION OF Pfaffia glomerata AND Pfaffia tuberosa (AMARANTHACEAE) / CULTURA DE TECIDOS E PRODUÇÃO DE b-ECDISONA EM Pfaffia glomerata E Pfaffia tuberosa (AMARANTHACEAE)
Many biotechnological techniques have been formed by new tools to the study of medicinal plants and for the production of homogenous and productive biomass. This work aimed to examine aspects of morphogenesis and callogenesis in Pfaffia glomerata and Pfaffia tuberosa as well as to evaluate the production of -ecdysone in micropropagated plants, clones and cal
Publicado em: 2006
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28. Influence of genotype, gelling agents, precursor (ACC) and inhibitors (AVG, STS) of ethylene, and of the type of sealing material in in vitro morphogenesis of eggplant (Solanum melongena L.) / Influência de genótipo, agentes gelificantes, precursor (ACC) e inibidores (AVG e STS) do etileno e tipo de vedação na morfogênese in vitro de berinjela (Solanum melongena L.)
No presente trabalho, estudos relacionados a aspectos da morfogênese e do comportamento in vitro de Solanum melongena foram realizados. Desse modo, objetivou-se determinar a influência do genótipo, concentração de sais e tipo de agente gelificante, inibidores da biossíntese e da ação e o precursor de etileno e tipo de vedação na morfogênese in vit
Publicado em: 2006
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29. IN VITRO SEEDS GERMINATION AND MORPHOGENESIS OF BOTTLE GOURD (Lagenaria siceraria (Mol.) Standl.) AND SQUASH (Cucurbita pepo L.) / GERMINAÇÃO IN VITRO DE SEMENTES E MORFOGÊNESE DE PORONGO (Lagenaria siceraria (Mol.) Standl.) E MOGANGO (Cucurbita pepo L.)
O estabelecimento e a germinação in vitro suprem explantes em grande quantidade para a organização de experimentos em morfogênese, a qual apresenta muitas aplicações, tais como a indução de flores in vitro, a obtenção de plantas haplóides e duplo-haplóides, a propagação clonal em massa, a embriogênese somática, entre tantas outras. O objetiv
Publicado em: 2005
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30. Análises histológicas e bioquímicas em calos de Eucalyptus urophylla S.T. Blake cultivados in vitro sob interação nutricional de boro e cálcio. / Histological and biochemical analyses on calluses of Eucalyptus urophylla S.T. Blake, cultivated in vitro in nutricional interaction of boron and calcium.
O boro e o cálcio são nutrientes essenciais para o desenvolvimento das plantas, entretanto existem poucos registros da atuação destes dois nutrientes de forma conjunta em organismos vegetais. Buscando identificar e quantificar as possíveis implicações do micro e macronutriente no desenvolvimento morfogenético de Eucalyptus urophylla, calos foram cult
Publicado em: 2005
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31. Estudos anatomicos e ultra-estruturais da organogenese in vitro de Passiflora edulis Sims f. flavicarpa Deg / Anatomy and structural studies of in vitro organogenesis of Passiflora edulis Sims f. flavicarpa Deg
Meristemoids are responsible for the in vitro organogenesis expression. They may be formed from the explant (direct organogenesis) or from callus (indirect organogenesis). Once in vitro organogenesis is a prerequisite for developing micropropagation strategies and genetic transformation in plants, the ultrastructural analysis of the cells involved in such re
Publicado em: 2005
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32. Use of photomorphogenenic mutants in the study of the competence for in vitro regeneration in micro-tomato (lycopersicon esculentum cv micro-tom). / Uso de mutantes fotomorfogenéticos no estudo da competência para regeneração in vitro em micro-tomateiro (Lycopersicon esculentum CV Micro-Tom.
Paralelamente ao modelo Arabidopsis thaliana, o tomateiro (Lycopersicon esculentum) tem sido crescentemente utilizados em abordagens genéticas de questões fisiológicas. Uma das principais vantagens de Arabidopsis como planta de laboratório tem sido seu pequeno porte e ciclo de vida curto. Contudo, a cultivar Micro-Tom (MT) de tomateiro possui tamanho
Publicado em: 2004
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33. In vitro behaviour of explants from potassium treated carrot matrixes (daucus carota l.). / Comportamento in vitro de explantes de matrizes de cenoura (Daucus carota L.) tratadas com variáveis níveis de potássio.
The growth of plants, organs, tissues and cells in vitro culture depends on the development of optimized culture medium for the perfect interaction among essential components such as phytoregulators, carbon source and minerals nutrients. The factors limiting the growth of organs or tissues in vitro conditions are similar to those limiting growth in vivo cond
Publicado em: 2003
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34. Bioactive Hierarchical Structures for Genetic Control of Bone Morphogenesis
For thirty years it has been known that certain compositions of Na2O-CaO-P2O5-SiO 2 glasses will form a mechanically strong, chemical bond to bone. These materials have become known as bioactive glasses and the process of bonding is called bioactive fixation. Bioactive glasses are widely used clinically in the repair of bone defects. Recent research at the I
Materials Research. Publicado em: 2002-09
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35. Germination and morphogenesis in vitro of mahogany (Swietenia macrophylla King) / Germinação e morfogênese in vitro de mogno (Swietenia macrophylla King)
The objective of this work was to develop techniques of in vitro regeneration of mahogany (Swietenia macrophylla), through epicotyls segments, inverted epicotyls and leaf explants from mahogany plantlets germinated in culture medium. Also the best concentration and time for seeds sterilization and the sterilizing agent were determined, as well as the best so
Publicado em: 2002
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36. Avaliação de diferentes fontes de nitrogênio em explantes de Cryptomeria japonica D.Don. "elegans" cultivados in vitro: análises bioquímicas e relações entre reguladores vegetais. / Evaluation of the different nitrate and ammonium concentrations in explants of cryptomeria japonica d. don. "elegans" cultivated in vitro .
Cryptomeria japonica D. Don. "elegans" is a fast-growing tree belonging to the Taxodiaceae and it is considered a responsive species in vitro . The aim of this work was to evaluate the effect of ten different concentrations of nitrate and ammonium in morphogenesis in vitro of Cryptomeria japonica D. Don. "elegans" explants. Analysis of relative growth rate,
Publicado em: 2002