Plant Molecular Genetics
Mostrando 25-36 de 84 artigos, teses e dissertações.
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25. Uma abordagem bayesiana para mapeamento de QTLs em populações experimentais / A Bayesian approach for mapping QTL in experimental populations
Many traits in plants and animals have quantitative nature, influenced by multiple genes. With the new molecular techniques, it has been possible to map the loci, which control the quantitative traits, called QTL (Quantitative Trait Loci). Mapping a QTL means to identify its position in the genome, as well as to estimate its genetics effects. The great diffi
Publicado em: 2009
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26. Resistência à ferrugem do cafeeiro: mapeamento genético, físico e análise da expressão gênica em resposta a infecção de H. vastatrix / Coffea leaf rust: genetic, physical mapping and analysis of the gene expression in response to infection the H. vastatrix
The coffee leaf rust it is caused by the biothrofic fungus Hemileia vastatrix is one diseases that more it causes economical damages. The coffee breeding for obtaining for resistance plants it is slow and the moleculars studies of identification for resistance genes to H. vastatrix are still few informative. This study had as objective to obtain information
Publicado em: 2009
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27. Polyketide biosynthetic gene bioprospection in metagenomic DNA from Atlantic Forest soil. / Bioprospecção de genes biossintéticos de policetídeos em DNA metagenômico de solo de Mata Atlântica.
The Brazilian Atlantic Forest is considered as one of the most important reservoir of biodiversity in the planet. This biome is extremely important for its richness of plant and animal species but although with their composition and interactions poorly known and unexplored from a microbiological perspective. One gram of soil can contain near 10 billion micro
Publicado em: 2009
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28. Identificação de novos locos de resistência à ferrugem asiática (Phakopsora pachyrhizi) em soja (Glycine max)
In Brazil, the soybean rust, caused by Phakopsora pachyrhizi, has caused yield losses and increased the cost of production by the intensive use of fungicides in soybean fields. The use of resistant varieties is an important tool to control the disease. Currently five different loci have been reported containing genes for resistance to disease, called rpp1 to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2008
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29. Controle genético da produção do flavonóide rutina em soja com característica de resistência a insetos desfolhadores
A soja é, atualmente, o principal produto da agricultura brasileira, colocando o Brasil em segundo lugar no cenário mundial em produção e exportação de grãos. No entanto, altas populações de insetos, como a lagarta-da-soja Anticarsia gemmatalis, podem causar perdas significativas no rendimento dessa cultura. A maioria das plantas, selvagens ou culti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2008
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30. Estrutura cariotípica de duas espécies de Hypochaeris (H. catharinensis e H. lútea), asteraceae endêmicas do sul do Brasil
Mudanças no número e morfologia dos cariótipos são considerados importantes mecanismos, envolvidos na evolução cromossômica de plantas. O gênero Hypochaeris (Asteraceae) compreende 50-60 espécies das quais, cerca de 15 estão distribuídas no norte da África, Europa, Ásia e de 40-50 são endêmicas da América do Sul, considerado o centro de diver
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2008
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31. Linkage disequilibrium, genetic association mapping and gene localization in crop plants
DNA-based molecular markers have been extensively utilized for a variety of studies in both plant and animal systems. One of the major uses of these markers is the construction of genome-wide molecular maps and the genetic analysis of simple and complex traits. However, these studies are generally based on linkage analysis in mapping populations, thus placin
Genetics and Molecular Biology. Publicado em: 01/09/2008
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32. Genética molecular de populações de Alternaria solani no Brasil / Molecular population genetics of Alternaria solani in Brazil
The analysis of the genetic structure of the population of Alternaria solani is an important component of the molecular epidemiology potato (Po) and tomato (To) early blight. Isolates were sampled from the Northeast, Central-West, Southeast, and South regions of Brazil. AFLP and RAPD markers were used to estimate genetic diversity. A multilocus combined data
Publicado em: 2008
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33. Análise cariotípica em espécies dos gêneros Solanum, Lycianthes e Vassobia
The Solanum genus comprises about 1.400 species of shrubs, trees and wines, found preferentially in the tropical regions. Some of these with economic interests, as the potato. In relation to the cytogenetical features, this group is interesting by the fact of the karyotypes be sufficiently conserved in chromosome number and shape, with diversity in the repet
Publicado em: 2008
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34. Genetic potential of population Ouro Negro x BRS Valente bean families / Potencial genético de famílias de feijoeiro da população Ouro Negro x BRS Valente
This work shows the analysis of 192 segregating families derived from the crossing of Ouro Negro and BRS Valente cultivars. The purpose is to develop black beans lines that are resistant to antracnose (Colletotrichum lindemuthianum) and rust (Uromyces appendiculatus), and also to have desirable agronomic traits such as high productivity of grain, erect archi
Publicado em: 2008
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35. Expressão de genes de resposta a estresses ambientais em mutantes defectivos de milho e Arabidopsis
Reverse genetics and gene expression analysis has been the main approach adopted in order to carry out the functional characterization of genes. Results from such studies have typically demonstrated that same gene can be involved in different cell functions. In this context, analysis of trehalose metabolism in plants has revealed that this pathway plays an i
Publicado em: 2008
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36. Avaliação in vivo e in vitro da citotoxicidade, genotoxicidade e dos efeitos protetores de extratos de plantas do cerrado brasileiro
The use of plants for healing purposes is becoming increasingly popular, as soon as they are believed to be beneficial and free of side effects. However, most of information available on several medicinal herbs does not have any scientific supporting data and their use as medicaments is based simply on traditional folk. Among the plants used by the humanity
Publicado em: 2008