Vegetal Line
Mostrando 13-24 de 52 artigos, teses e dissertações.
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13. Ruthenium nitrosyl compounds. Chemical equilibrium, involvement in vegetal systems and cytotoxicity in cancer / Nitrosilos complexos de rutênio. Equilíbrio químico, envolvimento em sistemas vegetais e citotoxicidade em modelos de câncer
The product of the reaction of trans-[Ru(NH3)4P(OEt) 3H2O]2+ with nitrite ions depends on the hydrogenionic concentration of the medium. In solutions with pH > 10, the final compound is the trans-[Ru(NH3)4P(OEt) 3NO2]+ (1,1 x 103 M-1.s-1), wich is quantitatively converted into the trans-[Ru(NH3)4P(OEt) 3NO]3+ in acid solutions (CH+ > 10-5 mol.L-1; kobs
Publicado em: 2008
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14. Genetic control of the resistance of the common bean plant to white mold using the reaction to oxalic acid / Controle genÃtico da resistÃncia do feijoeiro ao mofo branco e seleÃÃo assistida por marcadores moleculares
The use of genetically resistant cultivars is the most efficient method to diminish risks of epidemics and damage by white mold (Sclerotinia sclerotiorum (Lib.) by Bary). As the best known sources of resistance are not adapted it is necessary to do the backcross using elite lines. So the breeding will be easy if we understand the genetic control of the react
Publicado em: 2008
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15. Estimation of competition parameters in common bean plants / EstimatiÃÃo de parÃmetros de competiÃÃo entre plantas do feijoeiro
The objective of this study was to compare the auto and allo-competition at the plant level; to estimate parameters related to the capacity of competing or competition tolerance; and to identify promising lines to develop multilines. The experiments were conducted in three growing seasons (sowing in July 2005, November 2005 and February 2006). Eight common b
Publicado em: 2007
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16. Estimation of m+aâand d and the potential single cross of maize hybrids for line extraction
The purposes of this study were to estimate the contribution of heterozygous loci (d) and the contribution of homozygous loci (m+aâ) for morphophisiological characters and to verify the potential of commercial maize hybrids for breeding programs. F1 and F2 generations of ten commercial single cross hybrids were used (DKB 199, 30F90, A2555, DKB 333B, DOW 657
Publicado em: 2007
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17. ETNOFARMACOLOGIA DAS PLANTAS MEDICINAIS DE CÉU AZUL E COMPOSIÇÃO QUÍMICA DO ÓLEO ESSENCIAL DE Plectranthus neochilus Schltr.
O presente trabalho teve por objetivo realizar um levantamento etnofarmacológico de espécies vegetais utilizadas pelos moradores do município de Céu Azul (localizado no extremo oeste do Paraná). Utilizou-se um questionário específico para obter os dados referentes aos usos e modos de preparo das espécies utilizadas como medicinais. Durante as entrevi
Publicado em: 2007
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18. Zonação no gradiente vegetacional Cerrado Típico - Campo Sujo Vereda, na Estação Ecológica de Águas Emendadas, Brasília DF
The study was performed in the Águas Emendadas Ecological Station, Planaltina, seeking to evaluate the distribution of vegetal species throughout the soil moisture gradient, in three contiguous phytophysiognomic types: Cerrado Típico (CT) Campo Sujo (CS) and Vereda (VE). Both CT and CS can be found in either sides of VE. The distribution of the species thr
Publicado em: 2007
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19. Superexpression of the ADP/ATP Translocase in Maize Under Saline and Aluminum Stresses / SuperexpressÃo do ADP/ATP translocase em milho submetido aos estresses salino e de alumÃnio
The Brazilian Cerrado occupies an area with about 207 million hectares distributed in 12 states In this region the soils are acid with little organic substance and high aluminum levels Under the form of free ions the aluminum becomes toxic for the plants and affects their growth and development Maize considered an important culture in these areas suffers sev
Publicado em: 2007
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20. The influence of salt spray and the physical and chemical characteristics of the Massaguaçu River Estuary water (Caraguatatuba, São Paulo) on the adjacent vegetation. / Fatores condicionantes da flora marginal e aquática do Estuário do rio Massaguaçu (Caraguatatuba SP).
Both the biotic and abiotic characteristics of a habitat determine which species can live in this habitat. The frontier of two different habitats creates a transition zone, called ecotone. The transition of the Atlantica Forest and the Restinga is normally related to the presence of salt. The salt is a border line for vegetation. In costal habitats, the salt
Publicado em: 2007
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21. Evaluation of the chemical composition of the cell wall of transgenic tobacco plants (Nicotiana tabacum) that superexpress the gene ugdh, that codes for the enzyme UDPglucose dehydrogenase (EC 1.1.1.22) / Avaliação da composição química da parede celular de plantas de tabaco (Nicotiana tabacum) que superexpressam o gene ugdh de soja, que codifica a enzima UDP-glicose desidrogenase (EC 1.1.1.22)
The cellular elements that constitute the xylematic tissue of various plant species are widely used in diverse industrial sectors, with numerous applications, for example, the generation of energy and production of cellulose and paper. Plant cell walls are basically formed by cellulose, hemicellulose and lignin. The formation of cellulose and hemicellulose p
Publicado em: 2007
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22. Sampling of tree species diversity in tropical forests: patterns and limitations of some measures / Amostragem da diversidade de espécies arbóreas em florestas tropicais: padrões e limitações de algumas medidas
The description of species accumulation patterns with the increase of sampled area using the species accumulation curve has many applications to plant community studies. The use of this relation as a tool to determine the sampling sufficiency in phytosociological studies, therefore, shows methodological problems such as the arbitrariness in the order of samp
Publicado em: 2007
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23. Sthocastic model to estimate the soybean productivity in the State of São Paulo through bivaried normal simulation / Modelo estocástico para estimação da produtividade de soja no Estado de São Paulo utilizando simulação normal bivariada
The availability of resources, as much of financial order and human labor, is scarse. Therefore, it must stimulates the regional planning that minimizes the use of resources. Then, the forecast of harvests through modelling techniques must previously on the basis of be carried through the regional characteristics, thus indicating the routes of the research,
Publicado em: 2007
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24. Condicionamento e qualidade de sementes de milho no sincronismo de florescimento em campo de produÃÃo de sementes hÃbridas / Priming and maize seed quality in synchronism of flowering in the field hybrid seed production.
The production of maize hybrid seeds depends on the synchronism of flowering between the two parental lines, which normally have different cycles. In the present study, the effect of priming on maize seeds, with different levels of quality on the physiological quality and enzyme activity of the seeds and on the flowering time and other agronomic parameters w
Publicado em: 2007