Quantitative Trait Loci Analysis
Mostrando 1-12 de 158 artigos, teses e dissertações.
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1. Control of plant height by 24 alleles at 12 quantitative trait loci in rice
Abstract Plant height (PH) is controlled by quantitative trait loci (QTLs) in rice. In the present study, a recombinant inbred line population developed by crossing two rice cultivars, Lemont and Yangdao4, was grown in eight environments for QTL analysis. Multiple interval mapping detected 53 PH-QTLs, 39 of which clustered at 12 chromosome regions/putative l
Crop Breed. Appl. Biotechnol.. Publicado em: 01/08/2019
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2. QTL mapping to anthracnose leaf blight resistance in tropical maize
Abstract The objectives were to map genomic regions associated with quantitative trait loci (QTL) to anthracnose leaf blight (ALB) in tropical maize, and to determine the effects of the loci on resistance to the pathogenic fungus Colletotrichum graminicola (Ces.). QTL analysis to ALB was carried out in a population of F2:3 progenies resulting from the cross
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-12
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3. Linkage and mapping of quantitative trait loci associated with angular leaf spot and powdery mildew resistance in common beans
Abstract Angular leaf spot (ALS) and powdery mildew (PWM) are two important fungi diseases causing significant yield losses in common beans. In this study, a new genetic linkage map was constructed using single sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs), in a segregating population derived from the AND 277 x SEA 5 cross, with 105 reco
Genet. Mol. Biol.. Publicado em: 20/02/2017
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4. Genome association study through nonlinear mixed models revealed new candidate genes for pig growth curves
ABSTRACT: Genome association analyses have been successful in identifying quantitative trait loci (QTLs) for pig body weights measured at a single age. However, when considering the whole weight trajectories over time in the context of genome association analyses, it is important to look at the markers that affect growth curve parameters. The easiest way to
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-02
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5. Genome selection in fruit breeding: application to table grapes
ABSTRACT Genomic selection (GS) has recently been proposed as a new selection strategy which represents an innovative paradigm in crop improvement, now widely adopted in animal breeding. Genomic selection relies on phenotyping and high-density genotyping of a sufficiently large and representative sample of the target breeding population, so that the majority
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04
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6. Método de Haseman-Elston e suas modificações no estudo de genes controladores de característica quantitativa / Haseman-Elston methodology and modifications on the study genes underlining quantitative trait loci
QTL mapping allows to study loci that play a role in complex traits, as well to determine their chromosomal locations. For this purpose, a set of methods useful for the study of quantitative traits are those based on Haseman-EIston regression, that is quite used in human genetics. These are robustness regression methods for linkage analysis that can be used
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/01/2012
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7. Mapeamento Bayesiano de múltiplos caracteres: efeitos pleiotrópicos no estudo da herança dos componentes da produção em milho / Bayesian mapping of multiple traits: pleiotropic effects in studying the inheritance of yield components in maize
Pleiotropy has played an important role in understanding quantitative traits. However, the extensiveness of this effect in the genome and its consequences for plant improvement have not been fully elucidated. The aim of this study was to identify pleiotropic quantitative trait loci (QTL) in maize using Bayesian multiple interval mapping. Additionally, we sou
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/01/2012
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8. Zero-inflated Poisson regression models for QTL mapping applied to tick-resistance in a Gyr x Holstein F2 population
Nowadays, an important and interesting alternative in the control of tick-infestation in cattle is to select resistant animals, and identify the respective quantitative trait loci (QTLs) and DNA markers, for posterior use in breeding programs. The number of ticks/animal is characterized as a discrete-counting trait, which could potentially follow Poisson dis
Genetics and Molecular Biology. Publicado em: 28/10/2011
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9. Identification of quantitative trait loci for resistance against soybean sudden death syndrome caused by Fusarium tucumaniae.
The objective of this work was to identify genomic regions that underlie resistance to Fusarium tucumaniae sp. nov., the causing agent of sudden death syndrome (SDS) in soybean in South America, using a population with a genetic background different from that previously reported for Fusarium virguliforme sp. nov. (F. solani f. sp. glycines), also responsible
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Quantitative trait loci (QTL) mapping for growth traits on bovine chromosome 14.
Quantitative trait loci (QTL) mapping in livestock allows the identification of genes that determine the genetic variation affecting traits of economic interest. We analyzed the birth weight and weight at 60 days QTL segregating on bovine chromosome BTA14 in a F2 resource population using genotypes produced from seven microsatellite markers. Phenotypes were
Genetics and Molecular Biology. Publicado em: 2011
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11. Seleção fenotípica e assistida por marcadores moleculares de famílias de feijoeiro-comum com alta produtividade.
O objetivo deste trabalho foi selecionar famílias de feijoeiro-comum, com alta produtividade de grãos, por meio de seleção fenotípica e de seleção assistida por marcadores moleculares (SAM). Foram avaliadas 394 famílias, de quatro populações, e seus seis genitores, no Município de Lavras, em dois experimentos: um na geração F3:4, na safra das á
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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12. Estudos de locos de características quantitativas, de expressão gênica e teste de paternidade em suínos / Studies of quantitative trait loci, genic expression and of paternity testing in pigs
The accomplishment of the present study had as objective: 1) to map Quantitative Trait Loci (QTL) on chromosomes 1, 2, 3, 12, 14, 15 and X in a F2 pig population developed by mating two Brazilian Piau breed sires with 18 dams from a commercial line (Landrace × Large White × Pietrain); 2) investigate the level of expression of candidate genes influencing ec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/09/2010