Composite Interval Mapping
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Mapping of QTL for aluminum tolerance in tropical maize
Abstract The objectives of this study were to map genomic regions associated with QTL for aluminum (Al) tolerance in maize and determine the phenotypic effects of tolerance loci. QTL analysis for Al tolerance was carried out in a population of F2:3 progenies resulting from a cross between the contrasting lines LT 99-4 and LS 04-2. SSR (Simple Sequence Repeat
Crop Breed. Appl. Biotechnol.. Publicado em: 11/04/2019
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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. QTL mapping for yield components and agronomic traits in a Brazilian soybean population
Abstract The objective of this work was to map QTL for agronomic traits in a Brazilian soybean population. For this, 207 F2:3 progenies from the cross CS3035PTA276-1-5-2 x UFVS2012 were genotyped and cultivated in Viçosa-MG, using randomized block design with three replications. QTL detection was carried out by linear regression and composite interval mappi
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-12
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5. Mapping and stability of QTLs for seed weight in common beans under different environments.
The objectives were: 1 - to identify, under different environments, RAPD markers linked to loci that control the 100 seed weight of common beans; 2 - to evaluate the existence of interactions involving QTL's with planting dates and locations; 3 - to compare detection procedures of markers linked to QTL's utilizing the methods of mapping and multiple regressi
Crop Breeding and Applied Biotechnology. Publicado em: 2011
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6. Mapeamento de locos de resistência quantitativa a Puccinia psidii Winter em uma progênie de irmãos completos de eucalipto / Mapping of quantitative resistance loci against Puccinia psidii Winter in a full-sib progeny of Eucalyptus
In Brazil, the eucalyptus rust, caused by Puccinia psidii Winter, stands out as the most important disease of eucalypts, mainly in southeastern Brazil. The use of resistant genotypes is the main control method, which makes the understanding of the genetic basis of resistance essential to the selection of resistant genotypes. In this study, an F1 progeny of 9
Publicado em: 2010
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7. QTL mapping in sweet corn testecrosses with different testers and environments / Mapeamento de QTL em testecrosses de milho doce com diferentes testadores e ambientes
One of the main challenges in sweet corn breeding is to improve the efficiency of selection for grain yield and quality traits. The use of molecular markers would be a way to increase the selection efficiency in breeding programs. QTL mapping is an important tool for understanding the genetic basis of the traits and to generate information that can be used i
Publicado em: 2010
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8. Mapping QTLs for traits associated with biological nitrogen fixation (BNF) in soybeans / Mapeamento de QTLs para caracteres relacionados com a fixação biológica de nitrogênio (FBN) em soja
Soybeans [Glycine max (L.) Merrill] is a crop with high protein content (about 40%) in the seeds. As a result, the crop demands high nitrogen (N) inputs, which can be supplied by the process of biological nitrogen fixation (BNF), through the symbiosis with bacteria of the genus Bradyrhizobium. In Brazil the BNF allows to fulfill all the demand for N; therefo
Publicado em: 2010
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9. Estudo da herança dos caracteres stay-green, produção e seus componentes em milho utilizando o delineamento III e mapeamento de QTL / Inheritance study of stay-green, yield and its components in maize using the design III and QTL mapping
Maize is one of the most important agricultural activities in Brazil. The country is the third largest world producer and the yield rose from 1800 kg ha-1 to 3000 kg ha-1 in the last 15 years. The grain yield and drought tolerance are complex traits, difficult to select. A possibility to increase the efficiency of breeding programs that aims to improve the g
Publicado em: 2009
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10. Genetic architecture of quantitative traits associated with performance and carcass yield in domestic fowl / Arquitetura genética de características quantitativas associadas ao desempenho e ao rendimento de carcaça na galinha doméstica
Estudar a arquitetura genética de uma dada característica quantitativa significa descrever os fatores genéticos e ambientais que a afetam, bem como o valor dos efeitos genéticos de cada loco e suas interações. O presente trabalho teve por objetivo geral estudar a arquitetura genética de características quantitativas associadas ao desempenho e ao rend
Publicado em: 2008
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11. Mapeamento de QTLs utilizando as abordagens Clássica e Bayesiana / Mapping QTLs: Classical and Bayesian approaches
A produção de grãos e outros caracteres de importância econômica para a cultura do milho, tais como a altura da planta, o comprimento e o diâmetro da espiga, apresentam herança poligênica, o que dificulta a obtenção de informações sobre as bases genéticas envolvidas na variação desses caracteres. Associações entre marcadores e QTLs foram ana
Publicado em: 2006
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12. Linkage maps and QTL mapping in the yellow passion-fruit (Passiflora edulis Sims f. flavicarpa Deg.) / Mapas de ligação e mapeamento de QTL ("Quantitative Trait Loci") em maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.)
Although the yellow passion-fruit plays an important commercial role in Brazil, breeding and genetics studies are insipient. The present study was conducted aiming the construction of linkage maps and mapping of QTL for traits related to yield and fruit quality. It was used a population, composed of 160 individuals, derived from a cross from two plants of th
Publicado em: 2005