Root Segments
Mostrando 1-12 de 157 artigos, teses e dissertações.
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1. Physalis angulata L. propagation in vitro
ABSTRACT Physalis angulata L. is a plant with great fruit production potential, mainly in family farms, due to its versatility and valuable products such as jellies and juice concentrates. The aim of the present study is to evaluate the effect of two cytokines - i.e., plant growth regulators 6- benzylaminopurine (BAP) and kinetin (KIN) -, in association, or
Rev. Ceres. Publicado em: 02/12/2019
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2. Micropropagation of Guadua chacoensis (Rojas) Londoño & P. M. Peterson1
RESUMO A cadeia produtiva de bambu, no Brasil, ainda é incipiente, e tem baixa oferta de mudas devido aos métodos convencionais de propagação. Objetivou-se, aqui, estabelecer um protocolo de micropropagação para Guadua chacoensis. Explantes de matrizes cultivadas em ambiente controlado resultaram em menor contaminação, relativamente aos de plantas cu
Pesqui. Agropecu. Trop.. Publicado em: 26/09/2019
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3. In Vitro Organogenesis from Root Explants of Passiflora miniata Mast., an Amazonian Species with Ornamental Potential
ABSTRACT The present study reports a shoot organogenesis-based system for in vitro regeneration of Passiflora miniata, an Amazonia passion fruit species. Root segments were cultured in Murashige and Skoog (MS) medium supplemented with different concentrations (range 2-9 µM) of 6-benzyladenine (BA); thidiazuron (TDZ) or kinetin (KIN). Plant growth regulators
Braz. arch. biol. technol.. Publicado em: 12/08/2019
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4. Comparison of in vitro callus-cultures from transgenic maize AG-5011YG (MON810) and conventional near-isogenic maize AG-5011
Abstract MON810 is a genetically-modified (GM) maize (Zea mays) event commonly employed in insect-resistant GM maize hybrids. GM events obtained by biolistic transformation methods, such as MON810, are generated by insertion of a recombinant gene expression cassette in a random locus of the plant genome, and this process may cause emergent properties besides
Crop Breed. Appl. Biotechnol.. Publicado em: 01/08/2019
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5. Microtensile bond strength of root canal dentin treated with adhesive and fiber-reinforced post systems
Abstract Nowadays, demand for esthetic restorations has risen considerably; thus, nonmetal esthetic posts made of either high-strength ceramics or reinforced resins, such as fiber-reinforced resin posts, have become more and more popular. Important characteristics of fiber-reinforced posts involve a modulus of elasticity similar to dentin and their ability t
Braz. oral res.. Publicado em: 01/07/2019
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6. In vitro induction and regeneration of tetraploids and mixoploids of two cassava cultivars
Abstract We report the in vitro induction of polyploids from two cassava cultivars by colchicine treatment. Shoot nodal segments, collected from in vitro cultivated plants of Porquinho and Vassourinha cultivars, were used as explants. Explants were treated in liquid media without and with colchicine (0.05, 0.10 or 0.15%), at 90 rpm, in the dark, for 48 or 96
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-04
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7. Computed tomography evaluation of rotary systems on the root canal transportation and centering ability
Abstract : The endodontic preparation of curved and narrow root canals is challenging, with a tendency for the prepared canal to deviate away from its natural axis. The aim of this study was to evaluate, by cone-beam computed tomography, the transportation and centering ability of curved mesiobuccal canals in maxillary molars after biomechanical preparation
Braz. oral res.. Publicado em: 11/02/2015
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8. Pigment production and growth of Alternanthera plants cultured in vitro in the presence of tyrosine
The aim of the present study was to investigate the influence of tyrosine on the in vitro growth and the production of the betacyanin pigment in Alternanthera philoxeroides and A. tenella. Nodal segments were inoculated in MS medium containing different concentrations of tyrosine (0, 25, 50 and 75 μM), and the number of sprouts and buds, height, root length
Braz. arch. biol. technol.. Publicado em: 19/11/2013
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9. The sealing ability of MTA apical plugs exposed to a phosphate-buffered saline
OBJECTIVE: The aim of this study was to evaluate the influence of exposure of the mineral trioxide aggregate (MTA) - with and without calcium chloride (CaCl2) - to phosphate-buffered saline (PBS) on the apical microleakage using a glucose leakage system. MATERIAL AND METHODS: Sixty root segments were randomly divided into 4 experimental groups (n=15). Af
J. Appl. Oral Sci.. Publicado em: 2013-07
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10. Governança corporativa analisada nos limites circunscritos da crise subprime: análise dos efeitos da crise na volatilidade das ações no novo mercado brasileiro e no prime standard alemão
A governança corporativa emergiu num contexto de necessidade de mecanismos de incentivo e controle, com códigos que são postos à disposição das empresas para aprimorar a própria ideia de governança, com o objetivo de regular o funcionamento das estruturas internas e externas, de forma a conceder aos investidores maior segurança quanto à realizaçã
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/04/2012
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11. Efficient Regeneration of Eucalyptus urophylla x Eucalyptus grandis from Stem Segment
The aim of the present study was to establish an efficient regeneration system for the hybrid E. urophylla x E. grandis by means of organogenesis. Stem segments from seedlings were used as explants and cultured in a modified Murashige and Skoog medium (MS), supplemented with 13.2 µM N-phenyl-N'-[6-(2-chlorobenzothiazol)-yl] urea (PBU) and 0.285 µM indole-3
Brazilian Archives of Biology and Technology. Publicado em: 2012-06
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12. Elicitores abióticos no estresse oxidativo e na expressão de gene da rota de betacianina em Alternanthera philoxeroides (Mart.) Griseb. / Abiotic elicitors in oxidative stress and in gene expression of the betacyanin route in Alternanthera philoxeroides (Mart.) Griseb
The medicinal Alternanthera (Amaranthaceae) species, such as A. philoxeroides, present a great variety of bioactive compounds, among which are the betacyanins, nitrogen pigments that belong to the betalains class. These compounds are widely used as additives for food and drugs, due to their antioxidant action and lack of toxicity, which have already been pro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/10/2011