Genomic Combinations
Mostrando 1-12 de 110 artigos, teses e dissertações.
-
1. Characterization of diploid Arachis interspecific hybrids for pest resistance
ABSTRACT In Brazil, the thrips (Enneothrips flavens Moulton) and rednecked peanutworm (Stegasta bosquella Chambers) are considered key pests for the peanut crop. Wild species show resistance to both of these pests, and can be used in breeding programs. The production of the sterile interspecific hybrids is necessary, which could be colchicine treated to get
Bragantia. Publicado em: 2019-03
-
2. Quantitative genetics theory for genomic selection and efficiency of genotypic value prediction in open-pollinated populations
ABSTRACT: Quantitative genetics theory for genomic selection has mainly focused on additive effects. This study presents quantitative genetics theory applied to genomic selection aiming to prove that prediction of genotypic value based on thousands of single nucleotide polymorphisms (SNPs) depends on linkage disequilibrium (LD) between markers and QTLs, assu
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-02
-
3. Linkage analysis between dominant and co-dominant makers in full-sib families of out-breeding species
As high-throughput genomic tools, such as the DNA microarray platform, have lead to the development of novel genotyping procedures, such as Diversity Arrays Technology (DArT) and Single Nucleotide Polymorphisms (SNPs), it is likely that, in the future, high density linkage maps will be constructed from both dominant and co-dominant markers. Recently, a stric
Genetics and Molecular Biology. Publicado em: 2010
-
4. Distribution of recombination rates across the chromosome 4 of Arabidopsis thaliana and its association with genomic features / Distribuição de taxas de recombinação ao longo do cromossomo 4 de Arabidopsis thaliana e sua associação com elementos genômicos
Recombination is one of the most important factors in the evolution of genome organization. It provides the links between homologous chromosomes that ensure their proper segregation during the first meiotic division. It is responsible for the creation of novel allele combinations and yields genetic diversity on which evolutionary selection can act. Double-st
Publicado em: 2010
-
5. CitogenÃtica e potencial forrageiro de combinaÃÃes genÃmicas de capim-elefante e milheto / Cytogenetics and forage potential of genomic combinations in elephant grass and pearl millet
Visando contribuir com o programa de melhoramento do capim-elefante da Embrapa Gado de Leite, combinaÃÃes genÃmicas resultantes do retrocruzamento do hÃbrido hexaploide com seus parentais capim-elefante e milheto foram avaliadas para caracterÃsticas citogenÃticas, anatÃmicas e agronÃmicas/bromatolÃgicas. Pennisetum purpureum (2n=4x=28, genomas AâA�
Publicado em: 2009
-
6. Genetic mapping in half-sib families by computer simulation. / Mapeamento genético em famílias de meio-irmãos por simulação computacional
This study aimed at investigating the genetic mapping in half- sib families (HSF) through computer simulation to elucidate its limitations and advantages in genomic analysis. The following scenarios of simulation were used: (1) Study the effects of population size in HSF for N = 50, 100, 200, 300, 500 and 1000; (2) Study the effects of saturation degrees (5
Publicado em: 2008
-
7. Caracterização molecular do gene da β-tubulina em Phakopsora pachyrhizi / Molecular characterization of the β-tubulin gene in Phakopsora pachyrhizi
This study was carried out to characterize either the β- tubulin gene from the Phakopsora pachyrhizi and the protein codified by this gene. The urediniospores were collected in seven Brazilian counties. The genomic DNA was extracted and the β-tubulin gene was amplified by PCR technique through five combinations of specific primers on such a way to
Publicado em: 2008
-
8. Between the cross and the sword: the crisis of the gene concept
Challenges to the gene concept have shown the difficulty of preserving the classical molecular concept, according to which a gene is a stretch of DNA encoding a functional product (polypeptide or RNA). The main difficulties are related to the overlaying of the Mendelian idea of the gene as a ‘unit’: the interpretation of genes as structural and/or functi
Genetics and Molecular Biology. Publicado em: 2007-03
-
9. Análise comparativa do genoma de dois isolados de Cowpea aphid-borne mosaic virus (CABMV) obtidos de diferentes hospedeiros / Comparative analysis of the genome of two isolates of Cowpea aphid-borne mosaic virus (CABMV) obtained from different hosts
In Brazil and in other countries where passionfruit is grown, the viral disease known as passionfruit woodiness is a limiting factor for production. For many years this disease was associated with a single potyvirus, Passion fruit woodiness virus (PWV). However, studies conducted over the last 20 years demonstrated that two additional potyviruses, Cowpea aph
Publicado em: 2007
-
10. Molecular Epidemiology of the virus of the imunodeficiência human being type 1 (HIV-1) in cities of the interior of the State of Rio de Janeiro, with emphasis in the cities of Miracema, Santo Antonio de Pádua and Saquarema, 2001 the 2006. / Epidemiologia Molecular do Vírus da Imunodeficiência Humana Tipo 1 (HIV-1) em Municípios do Interior do Estado do Rio de Janeiro, com Ênfase nas Cidades de Miracema, Santo Antonio de Pádua e Saquarema, 2001 a 2006.
The AIDS epidemic in Brazil is spreading from the large urban centers to small cities and the innermost parts of the country, yet data on the features of HIV-1 infection in these places are scarce. Such spread is expected to pose formidable medical, social and logistic challenges. By using mainly HIV-1 envelope and polymerase genomic regions, the studies tha
Publicado em: 2007
-
11. Caracterização da diversidade de estirpes de Bradyrhibium japonicum e B. elkanii estabelecidas por inoculação em solos do Cerrados, isoladas de nódulos de soja
The plasticity of rhizobial genomes is far greater than previously thought, with complex genomic recombination events that may be accelerated by the often-stressful environmental conditions of the tropics. This study aimed at evaluating changes in soybean rhizobia due to adaptation to inhospitable environmental conditions (high temperatures, drought and acid
Publicado em: 2006
-
12. Genome comparison of progressively drug resistant Plasmodium falciparum lines derived from drug sensitive clone
Chloroquine has been the mainstay of malaria chemotherapy for the past five decades, but resistance is now widespread. Pyrimethamine or proguanil form an important component of some alternate drug combinations being used for treatment of uncomplicated Plasmodium falciparum infections in areas of chloroquine resistance. Both pyrimethamine and proguanil are di
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-04