Subculture
Mostrando 1-12 de 367 artigos, teses e dissertações.
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1. In vitro conservation of Poincianella pyramidalis (Tul.) L.P. Queiroz under minimal growth conditions
RESUMO Poincianella pyramidalis (Tul.) L.P. Queiroz, é uma espécie endêmica da Caatinga, se destaca pela importância nas atividades madeireira e medicinal. Este estudo teve como objetivo avaliar o efeito dos agentes osmóticos sacarose, sorbitol e manitol e o retardante de crescimento paclobutrazol (PBZ) na indução do crescimento mínimo in vitro de P.
Ciênc. agrotec.. Publicado em: 09/12/2019
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2. Bartonella henselae bacteremia diagnosed post-mortem in a myelodysplastic syndrome patient
ABSTRACT This study involves a 49-year-old male, who for three years suffered with a myelodysplastic syndrome and who needed frequent blood transfusions. One day following a transfusion, he presented fever and abdominal pain. The fever became persistent and only improved temporarily with two cycles of intravenous ciprofloxacin. Nearly 120 days after beginnin
Rev. Inst. Med. trop. S. Paulo. Publicado em: 12/09/2019
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3. Influence of in vitro micropropagation on lycorine biosynthesis and anticholinesterase activity in Hippeastrum goianum
ABSTRACT Hippeastrum goianum (Ravenna) Meerow, Amaryllidaceae, is an endemic species from the Cerrado, Brazil; there are only few studies about its chemistry or biological activity. This study aimed to investigate the occurrence of lycorine in extracts from in vitro H. goianum plantlets, as well as evaluate a possible inhibition of acetylcholinesterase. The
Rev. bras. farmacogn.. Publicado em: 27/05/2019
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4. Micropropagation, plantlets production estimation and ISSR marker-based genetic fidelity analysis of Guadua magna and G. angustifólia
RESUMO Os bambus Guadua magna e G. angustifolia têm sido propagados vegetativamente quase que exclusivamente por técnicas convencionais de propagação. Objetivou-se micropropagar, estimar a produção de mudas e analisar a fidelidade genética de G. magna e G. angustifolia por marcadores moleculares ISSR. Plantas matrizes de ambas as espécies foram culti
Pesqui. Agropecu. Trop.. Publicado em: 13/05/2019
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5. Fronteras del deseo. Homosexualidad, sociabilidad y afecto en la ciudad de Buenos Aires (1950-1983) *
Abstract This article reconstructs the connections between urban life and homosexual modes of socialization in Buenos Aires between 1950 – 1983. With the analysis of written sources, interviews, literary works and the mapping, we propose a description of this subculture. Among the objectives it highlighted: the relationship of homosexual subculture with ot
Cad. Pagu. Publicado em: 13/03/2017
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6. Phytochemical and Morphological Evidences for Shikonin Production by Plant Cell Cultures of Onosma sericeum Willd
ABSTRACT Shoot regeneration, callus growth, and biosynthesis of shikonin in callus cultures of Onosma sericeum were examined. Plant tissue culture was used as an alternative method for increasing the production of shikonin, a secondary metabolite. The isolated cultures were subjected to abiotic factors such as light, plant growth regulators, and nutritional
Braz. arch. biol. technol.. Publicado em: 31/10/2016
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7. Influence of Plant Growth Regulators on In Vitro Shoot Multiplication and Plantlet Formation in Cassia angustifolia Vahl
ABSTRACTAn effective and improved plant regeneration system was successfully developed using shoot tip explants taken from a two years old mature plant of Cassia angustifolia. The effect of different cytokinins, [6-benzyladenine (BA), Kinetin (Kin) and thidiazuron (TDZ)] at different concentrations (0.5-10 µM) were evaluated as augmented with Murashige and
Braz. arch. biol. technol.. Publicado em: 2015-10
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8. Influence of calcium content of tissue on hyperhydricity and shoot-tip necrosis of in vitro regenerated shoots of Lavandula angustifolia Mill.
In the present study, the effects of two CaCl2.2H2O levels (440 and 1320 mg L-1) and two subcultures were evaluated on in vitro shoots of Lavandula angustifolia cv. Provence Blue. Ca2+ content of the apical, middle and basal portion of shoots was determined. Increasing CaCl2.2H2O level in the culture medium increased tissue Ca2+ content and decreased hyperhy
Braz. arch. biol. technol.. Publicado em: 2014-10
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9. Methods to preserve potentially toxigenic fungi
Microorganisms are a source of many high-value compounds which are useful to every living being, such as humans, plants and animals. Since the process of isolating and improving a microorganism can be lengthy and expensive, preserving the obtained characteristic is of paramount importance, so the process does not need to be repeated. Fungi are eukaryotic, ac
Braz. J. Microbiol.. Publicado em: 2014
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10. Micropropagation of an elite F1 watermelon (Citrullus lanatus) hybrid from the shoot tip of field grown plants
The aim of this work was to develop a protocol for rapid micropropagation of an elite F1 hybrid watermelon cultivar using shoot tip of field-grown plants. Maximum frequency (73%) of shoot tip showed growth response in MS medium supplemented with 5 mg l-1 benzyl adenine (BA) and 0.1 mg l-1 indole-3 acetic acid (IAA). Upon transfer to cytokinin-enriched medium
Braz. arch. biol. technol.. Publicado em: 2012-06
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11. Effect of picloram, additives and plant growth regulators on somatic embryogenesis of Phyla nodiflora (L.) Greene
The present study describes the plant regeneration via somatic embryogenesis in suspension culture derived from the leaf and stem explants of Phyla nodiflora. The medium type, plant growth regulators, complex extract (coconut milk and malt extract) and anti-oxidant (activated charcoal, ascorbic acid, Polyvinylpyrrolidone and citric acid) markedly influenced
Brazilian Archives of Biology and Technology. Publicado em: 2011-02
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12. Efficacy of banana plantlet production by micropropagation.
The use of banana (Musa spp.) plant production by tissue culture is increasing throughout the world. However the occurrence of somaclonal variation has been one of the most important problems affecting the commercial value of the plants. A reason for the somaclonal variation can be the time of permanence of the culture in vitro, i.e., the number of subcultur
Pesquisa Agropecuaria Brasileira. Publicado em: 2011