Plant Growth Substance
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Omission and Resupply of Nitrogen Affect Physiological and Enzymatic Activities and the Gene Expression of Eucalypt Clones
ABSTRACT: The mineral nutrient uptake of plants in the field occurs in pulses, due to variations in the substance concentrations at the root surface. The fluctuations in nutrient supply probably induce changes in the plant, which are to date unknown for Eucalyptus. This study evaluated these changes in plant growth, nutritional status, photosynthesis, and ge
Rev. Bras. Ciênc. Solo. Publicado em: 15/12/2016
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2. In vitro and in vivo antimalarial activity and cytotoxicity of extracts, fractions and a substance isolated from the Amazonian plant Tachia grandiflora (Gentianaceae)
Tachia sp. are used as antimalarials in the Amazon Region and in vivo antimalarial activity of a Tachia sp. has been previously reported. Tachia grandiflora Maguire and Weaver is an Amazonian antimalarial plant and herein its cytotoxicity and antimalarial activity were investigated. Spectral analysis of the tetraoxygenated xanthone decussatin and the iridoi
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-06
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3. Chemical and botanical characterization of Chilean propolis and biological activity on cariogenic bacteria Streptococcus mutans and Streptococcus sobrinus
Propolis is a non-toxic natural substance with multiple pharmacological properties including anticancer, antioxidant, fungicidal, antibacterial, antiviral, and anti-inflammatory among others. The aim of this study was to determine the chemical and botanical characterization of Chilean propolis samples and to evaluate their biological activity against the car
Braz. J. Microbiol.. Publicado em: 2013
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4. The influence of thymol+DMSO on survival, growth and reproduction of Bradybaena similaris (Mollusca: Bradybaenidae)
Bradybaena similaris (Férussac, 1821), commonly known as the Asian trampsnail, is a terrestrial snail native to Asia, introduced in other regions of the world. In Brazil, populations of this land snail are distributed from the state of Amapá in the North to Rio Grande do Sul in the South. This species acts as an intermediate host for parasites and is a dif
Zoologia (Curitiba). Publicado em: 2011-04
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5. Manga: indução floral.
2000
Petrolina : Embrapa Semi-Arido. Publicado em: 2011
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6. Efeito de doses de paclobutrazol na cultura do alho.
O trabalho foi realizado no período de maio a outubro de 1991 no campo experimental do setor de olericultura da Ufla, Lavras, MG, com o objetivo de avaliar a influência de doses de paclobutrazol sobre o controle do pseudoperfilhamento e nas características morfológicas e comerciais do alho (Allium sativum L.). Utilizou-se o delineamento experimental de b
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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7. Mecanismos envolvidos com a sobrevivência de Xylella fastidiosa em condições de estresse e efeito de N-Acetil-L-Cisteína em seu biofilme / Mechanisms involved in Xylella fastidiosa survival under stress conditions and effect of N-Acetyl-L-Cysteine on its biofilm
Xylella fastidiosa is a Gram-negative bacterium that causes several diseases in different plant species, including citrus variegated chlorosis (CVC) in sweet orange (Citrus sinensis L. Osbeck), whose economic damage is of millions of dollars annually. The symptoms development has been associated with the blockage of xylem vessels caused by bacterial biofilm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2010
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8. GASTROPROTECTIVE AND ANTIMICROBIAL ACTIVITIES OF MATRICARIA RECUTITA (CAMOMILA) FLOWER EXTRACT AND ALPHA-BISABOLOL: POSSIBLE MECHANISMS OF ACTION / Potencial farmacolÃgico do extrato seco de matricaria recutita (Chamomilla) e do Alfa-Bisabolol
Matricaria recutita, commonly known as chamomile, is a plant species used in medicine due to its sedative properties, anti-inflammatory and healing, among others. Alpha-bisabolol, a sesquiterpene present in essential oil, also has several pharmacological activities recognized. This work evaluated the gastroprotective activity, antioxidant, antimicrobial and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/08/2009
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9. Correlação entre os ensaios de citotoxicidade em Artemia salina Leach e atividade antineoplásica sobre linhagens de células tumorais para algumas classes de produtos naturais / Correlation between the citotoxicity assays in Artemia salina Leach and antineoplasic activity on tumoral cell lines for some natural products groups
The aim of this study was to correlate qualitative and quantitatively the lethal concentration needed for the citotoxic test on Artemia salina with the inhibitory concentration for the growth of tumoral cell lines using ten pure substances already known. Estimates for the year 2008 and also valid for the year 2009, in Brazil, show the occurrence of 466.730 n
Publicado em: 2009
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10. Defense systems against oxidative stresses in two rice cultivars (Oryza sativa L.) with differential tolerance to aluminum / Sistemas de defesa contra estresses oxidativos em dois cultivares de arroz (Oryza sativa L.) com tolerância diferencial ao alumínio
Aluminum (Al) effects on the growth and enzymatic and non-enzymatic antioxidative mechanisms involved in the scavenging of reactive oxygen species (ROIs) in two rice cultivars: Fernandes (CNA-1158) and Maravilha (CNA-6843-1) with differential tolerance to Al were studied. The plants, grown in pH 4.0 nutrient solution, for ten days in nutrient solution, pH 4,
Publicado em: 2007
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11. Insecticide and fungicide activity of the ethanolic extracts of Pachira aquatica in Aubl Hypothenemus hampei (Ferrari) and Fusarium sp / ATIVIDADE INSETICIDA E FUNGICIDA DO EXTRATO ETANÓLICO DE Pachira aquatica AUBL SOBRE Hypothenemus hampei (FERRARI) E Fusarium sp
The coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Scolytidae), is considered as one of the principals plagues of the coffee tree, attacking the fruits all maturation phases. It possesses a short biological cycle and has a great capacity of proliferation, thus causing a phytossanitary problem in all the producing regions of coffee. Initial ef
Publicado em: 2006
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12. Fenóis totais no cafeeiro em razão das fases de frutificação e do clima. / Total phenols in the coffee tree due to the fructification phases and the climate.
The vegetables show a natural defense against external factors, biotic and abiotic, by the synthesis of the phenolic compounds in the secondary metabolism, which varies with the maturity state and with the climate. The increase of phenolic compounds in the plants is directly related to the resistance to the infection thought pathogens and insect infestation.
Publicado em: 2005