Root Segments
Mostrando 13-24 de 157 artigos, teses e dissertações.
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13. In Vitro Regeneration of Arachis Villosulicarpa Hoehne from Cotyledon Segments, Leaves and Cell Suspension.
In vitro regeneration from immature leaves and cotyledon segments of A. villosuli-carpa Hoehne was obtained on Murashige & Skoog medium (1962) plus 1.0 mg/l 1-naphthalene acetic acid (NAA) and 1.0 mg/l 6-benzylaminopurine (BAP). Cotyledon segments showed higher morphogenetic potential than immature leaves. Morphogenic calli could also be obtained from leaves
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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14. MULTIPLICAÇÃO in vitro DE GENÓTIPOS DE Eucalyptus dunnii MAIDEN / MULTIPLICATION in vitro GENOTYPES OF Eucalyptus dunnii MAIDEN
Eucalyptus is a genus of great importance to the economy and production of various goods. Among the species of this genus, Eucalyptus dunnii Maiden stands out the importance, especially for the states of southern Brazil, to present a good growth and resistance to frost. However, this species presents problems for the production of seedlings by cloning, mainl
Publicado em: 2011
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15. The bicuspid aortic valve and its relation to aortic dilation
BACKGROUND: A bicuspid aortic valve (BAV) is a common congenital heart disease, which affects 1-2% of the population. However, the relationship between BAVs and aortic dilation has not been sufficiently elucidated. METHODS: A total of 241 BAV patients who were referred to this hospital for cardiac surgey over a 4.75-year period were included in this study. I
Clinics. Publicado em: 2010
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16. Mycorrhizal diversity in Coppensia doniana (Orchidaceae) and phylogeny of mycorrhizal fungi associated with the Oncidiinae subtribe / Diversidade micorrízica em Coppensia doniana (Orchidaceae) e filogenia de fungos micorrízicos associados à subtribo Oncidiinae
In nature, orchids are fully dependent on mycorrhizal fungi for germination. These fungi can penetrate root cells and form pelotons, whose digestion provides simple sugars for the embryo. During the achlorophyllous seedling stage, orchids are obligatory dependent on the fungi, and some species remain so through life, while others become facultatively respons
Publicado em: 2010
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17. Desenvolvimento in vitro e imunolocalização de 5-metilcitosina em raízes tuberizadas e não-tuberizadas de Viguiera arenaria Baker (Asteraceae) / In vitro development and immunolocalization of 5-methylcytosine in tuberized and nontuberized roots of Viguiera arenaria Baker (Asteraceae)
Viguiera arenaria Baker is an herbaceous Asteraceae from Cerrado presenting alternate phyllotaxis, capitulum inflorescence and tuberized roots. Although phytochemical analyses have found substances with biological activities of therapeutic interest, little is known about the biology of the plant. In this study, we sought to contribute to the knowledge of asp
Publicado em: 2010
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18. Morphogenesis in vitro, phytochemical analysis and anatomical characterization of neem (Azadirachta indica A. Juss) / Morfogênese in vitro, análise fitoquímica e caracterização anatômica de nim (Azadirachta indica A. Juss)
The Azadirachta indica A. Juss species, popularly known as neem, belongs to the Meliaceae family, which has great potential for azadirachtin (AZA) production; however, neem has recalcitrant seeds, cross-pollination and variable content of AZA. Four experiments were conducted in order to understand the in vitro growth limiting factors of these plants and chan
Publicado em: 2009
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19. Embriogênese somática a partir de folhas imaturas e flores desenvolvidas in vitro de dendezeiro (Elaeis guineensis Jacq) / Somatic embryogenesis from immature leaves and flowers developed in vitro from oil palm (Elaeis guineensis Jacq)
The study aimed to establish an efficient protocol for somatic embryogenesis of the oil palm, especially all of cultivars explored in Brazil, as well as to acomplish the anatomical caracterization of the embryogenic process. For induction of somatic embryogenesis we used two explants types, leaves segments and female inflorescences, resulting in two experime
Publicado em: 2009
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20. Subsidy for genetic transformation of Catasetum pileatum (Orchidaceae) plants using root and shoot meristematic tissues / Subsídios à transformação genética de plantas de Catasetum pileatum (Orchidaceae) por meio de tecidos merismáticos radiculares e caulinares
Research on in vitro conversion of root apical meristems into buds in Catasetum has contributed to a better understanding of competence, induction and cellular determination processes during plant development. Nowadays It demands advances in molecular studies. To achieve this, the use of transgenic plants is an important working tool. Furthermore, genetic tr
Publicado em: 2008
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21. IN VITRO REGENERATION OF Parapiptadenia rigida (Bentham) Brenan / REGENERAÇÃO IN VITRO DE Parapiptadenia rigida (Bentham) Brenan
The Parapiptadenia rigida (Bentham) Brenan is a native forest specie that can be used in the restoration of gallery forests and degraded areas. This work has the objective to develop the regeneration in vitro of P. rigida using explants of aseptic seedlings. In experiment 1, seeds of P. rigida were disinfected in 0.0, 2.5 and 5.0% of sodium hypochlorite duri
Publicado em: 2008
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22. RESPOSTAS FISIOLÓGICAS E BIOQUÍMICAS DE DUAS CULTIVARES DE BATATA (Solanum tuberosum L.) EXPOSTAS AO CÁDMIO / PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES OF TWO POTATO CULTIVARS (Solanum tuberosum L.) EXPOSED TO CADMIUM
In much agricultural farmland, cadmium (Cd) concentrations are above the natural levels mainly due to anthropogenic actions such as metal liberation from industrial and agricultural sources. Therefore, it is necessary to study the toxicity and accumulation of this metal in plants used as food sources such as the potato (Solanum tuberosum L.). This study was
Publicado em: 2008
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23. In vitro evaluation of root canal preparation using oscillatory and rotary systems in flattened root canals
OBJECTIVE: The aim of this study was to evaluate the biomechanical preparation of flattened root canals using the following systems: Endo-Eze AET stainless steel oscillatory instruments (Ultradent) and RaCe rotary NiTi instruments (FKG Dentaire). MATERIAL AND METHODS: Twenty extracted human mandibular incisors were randomly assigned to two groups: Group 1 -
Journal of Applied Oral Science. Publicado em: 2007-02
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24. Otimização do cultivo in vitro visando a transformação genética das cultivares brasileiras de alho (Allium sativum L.) / Optimization of in vitro culture aiming at genetic transformation of Brazilian garlic (Allium sativum L.) cultivars
Garlic (Allium sativum L.) breeding has been limited to clonal selection of mutant genotypes, since almost all the species germplasm is sterile, not flowering under standard culture conditions. Garlic sterility affects not only breeding but also directly influences production costs. Further, the requirement of vegetative propagation using small bulbs as prop
Publicado em: 2007