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Registros recuperados: 28
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A mixed model to multiple harvest-location trials applied to genomic prediction in Coffea canephora. Repositório Alice
FERRÃO, L. F. V.; FERRÃO, R. G.; FERRAO, M. A. G.; FONSECA, A. F. A. da; GARCIA, A. A. F..
Genomic selection (GS) has been studied in several crops to increase the rates of genetic gain and reduce the length of breeding cycles. Despite its relevance, there are only a modest number of reports applied to the genus Coffea. Effective implementation depends on the ability to consider genomic models, which correctly represent breeding scenario in which the species are inserted. Coffee experimentation, in general, is represented by evaluations in multiple locations and harvests to understand the interaction and predict the performance of untested genotypes. Therefore, the main objective of this study was to investigate GS models suitable for use in Coffea canephora. An expansion of traditional GBLUP was considered and genomic analysis was performed...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genotyping-by-sequencing; GBLUP; Multi-environment trials; Perennial crops; Marker-assisted selection.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081803
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Accuracy of genomic prediction for tick resistance in Braford and Hereford cattle. Repositório Alice
CARDOSO, F. F.; SOLLERO, B. P.; GOMES, C. C. G.; COMIN, H. B.; ROSO, V. M.; HIGA, R. H.; YOKOO, M. J.; CAETANO, A. R.; AGUILAR, I..
This work aimed to determine the accuracy and bias of genomic predictions of Braford (BO) and Hereford (HH) cattle genetic resistance to ticks.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Seleção genômica; Resistência a carrapatos; Tick resistance; Gado de corte; Beef cattle; Marker-assisted selection.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003697
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Association mapping in common bean revealed regions associated with Anthracnose and Angular Leaf Spot resistance. Repositório Alice
FRITSCHE-NETO, R.; SOUZA, T. L. P. O. de; PEREIRA, H. S.; FARIA, L. C. de; MELO, L. C.; NOVAES, E.; BRUM, I. J. B.; JANNINK, J-L..
Despite important biotic stresses to common bean, Anthracnose (ANT) and Angular Leaf Spot (ALS) can cause losses of up to 80 % and occur in more than 60 countries around the world. Genetic resistance is the most sustainable strategy to manage these diseases. Thus, we aimed to (1) identify new SNP markers associated with ALS and ANT resistance loci in elite common bean lines, and (2) provide a functional characterization of the DNA sequences containing the identified SNP markers. We evaluated 60 inbred lines, under field conditions, which represent the elite germplasm developed by the Embrapa common bean breeding program across 22 years, in terms of severity of the ALS and ANT. The lines were genotyped with 5,398 SNPs. Then, a Mixed Linear Model was run to...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Feijão; Phaseolus Vulgaris; Antracnose; Resistência; Mancha Angular; Anthracnose; Beans; Colletotrichum lindemuthianum virus; Pseudocercospora; Disease resistance; Marker-assisted selection.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111232
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Detection of a novel quantitative trait locus for cold tolerance at the booting stage derived from a tropical japonica rice variety Silewah OAK
Mori, Masahiko; Onishi, Kazumitsu; Tokizono, Yoshiro; Shinada, Hiroshi; Yoshimura, Toru; Numao, Yoshinori; Miura, Hideho; Sato, Takashi; 大西, 一光; 三浦, 秀穂.
Cold stress at the booting stage in rice induces spikelet sterility because of aberrant microspore development, which often seriously damages seed production. Some breeding lines with high cold tolerance were developed by using tropical japonica variety Silewah as a donor of cold tolerance; however, the genetic factors that confer cold tolerance of this variety have not been comprehensively analyzed. In this study, phenotypic and molecular characterization of novel cold-tolerant strains derived from crosses with Silewah was performed to identify quantitative trait loci (QTLs) responsible for cold tolerance. Molecular marker analysis revealed that 2 cold-tolerant strains carried chromosomal segments of Silewah at the same genomic regions on chromosomes 3, 4...
Palavras-chave: Oryza sativa; Cold tolerance; Booting stage; QTL; Phenotypic selection; Marker-assisted selection; Exotic germplasm.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3040
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Development and application of high-throughput amplified fragment length polymorphism technique in Calluna vulgaris (Ericaceae) Electron. J. Biotechnol.
Borchert,Thomas; Gawenda,Inka.
Calluna vulgaris is an important ornamental crop of the horticultural industry in Europe. In order to improve breeding of this species, especially of the most important trait of ‘bud-flowering', the implementation of molecular techniques that allow rapid, reproducible and efficient screening of whole segregating populations e.g. for molecular marker and mapping approaches is a requirement. We therefore aimed to introduce the powerful tool of amplified fragment length polymorphisms (AFLP®), a widely and successfully applied method, into our methodological assortment. As an essential prerequisite, the isolated DNA should be of adequate quality which is a common obstacle when dealing with woody species and their interfering secondary...
Tipo: Journal article Palavras-chave: DNA content; Mapping; Marker-assisted selection; Ornamental; Plant tissue.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000200007
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Efficiency in evaluating salt tolerance in rice using phenotypic and marker assisted selection International Rice Research Institute
Bhuiyan, Md. A.R..
xvi, 96 p. : ill. Thesis (Ph.D.) -- Bangladesh Agricultural University.
Tipo: Thesis Palavras-chave: Rice; Plant genetics; Salt tolerance; Selection methods; Marker-assisted selection; Plant breeding.
Ano: 2005 URL: http://hdl.handle.net/10269/179
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Efficiency of microsatellite markers in assisted selection for resistance to soybean cyst nematode (race 3). Repositório Alice
DI MAURO, A. O.; UNÊDA-TREVISOLI, S. H.; DI MAURO, S. M. Z.; COSTA, M. M.; OLIVEIRA, R. C. de; ARANTES, N. E..
Four microsatellite sequences were tested in soybean DNA from cultivars and segregating genotypes. Three of them were close to the resistance locus rhg 1 on molecular linkage group G (Satt 309, Sat_168, Sat_163) and one was close to Rhg4 locus on group A2 (Sat_162). Progenies previously classified as cyst nematode (SNC) resistant and others with unknown reaction were tested, using the resistant cultivars Liderança, and Renascença and the susceptibles 'Cristalina' and 'OCEPAR-4' as control. The best primer for resistance to SCN was Sat_162. Twenty segregant progenies tested with Sat_162 presented a 150 bp band for homozygous resistant genotypes and 200 bp for susceptible ones, and both for the heterozigous genotypes. Previous studies have shown that this...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Soja; Nematóde; Heterodera glycines; Soybeans; Nematoda; Heterodera glycines; Marker-assisted selection.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/467572
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Estimation by simulation of the efficiency of the French marker assisted selection program in dairy cattle Inra
Guillaume, F.; Fritz; Boichard, D.; Druet, T..
Tipo: Journal Article Palavras-chave: Marker-assisted selection; Simulation; Efficiency; Dairy cattle.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008f2993140&uri=/notices/prodinra1/2009/12/
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Estudo de associação de polimorfismos nos genes LEP e TG com características de qualidade de carne e carcaça em bovinos da raça Canchim. Repositório Alice
SOUSA, I. I.; BLECHA, I. M. Z.; MACIEL, S. da S.; FERREIRA, A. B. R.; FEIJO, G. L. D.; FAVERO, R.; SANTIAGO, G. G.; SIQUEIRA, F..
Avaliou-se os marcadores moleculares do tipo SNP (Single-nucleotide Polymorphism) E2FB (AY138588.1:c.305C>T) e TG5 (X05380.1:g.-422C>T) nos genes da leptina e da tireoglobulina em animais da raça Canchim. As genotipagens foram realizadas por PCR-RFLP (Polymerase Chain Reaction-Restriction Fragment Length Polymorphism) e as frequências alélicas e genotípicas foram comparadas pelo teste Quiquadrado. Os desvios de frequências observadas em relação às esperadas para o Equilíbrio de Hardy-Weinberg foram analisados a 5% de significância e os dados foram submetidos à ANOVA por meio do PROC GLM (SAS). No marcador LEP/Kpn2I observou-se associação sugestiva (P=0,0555) para área de olho de lombo e marmoreio (P=0,068), porém não foi verificado efeito...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Seleção assistida por marcadores; Gado de corte; Marcador moleculr; Melhoramento genético animal; Beef cattle; Genetic markers; Genetic improvement; Marker-assisted selection.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1077308
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Genetic linkage map and mapping of the locus of biological nitrogen fixation inefficiency in cowpea Agronomy
Seido, Sirando Lima; Fernandes Santos, Carlos Antonio.
The objectives of the present study were to construct a cowpea genetic map using the F2 population resulting from the cross IC-1 x BRS Marataoã, based on single nucleotide polymorphism (SNP) markers, and to map the cpi gene, with additional reference to introgression with the consensus map of species, aiming to identify markers for assisted selection to develop more efficient cultivars for BNF. The parents and 89 F2 plants were genotyped with 51,128 SNP markers, of which 910 polymorphic markers were used to construct the map. The results revealed 11 linkage groups, with an average of 82 markers per chromosome and average distance of 1.26 cM between markers. Recombination analysis of the SNPs indicated that markers 2_12850 and 2_00188, located in linkage...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Nitrogen fixation; Marker-assisted selection.
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42603
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Genetic relationship, molecular mapping, and development of marker-assisted selection for fertility restoring (RF) genes for rice cytoplasmic male sterility systems International Rice Research Institute
Sattari, Majid.
xiii, 104 l. : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Plant genetics; Chromosome mapping; Marker-assisted selection; Plant fertility; Cytoplasmic male sterility; Hybrids.
Ano: 2004 URL: http://hdl.handle.net/123456789/379
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Genome prediction accuracy of common bean via Bayesian models. Repositório Alice
BARILI, L. D.; VALE, N. M. do; SILVA, F. R. e; CARNEIRO, J. E. de S.; OLIVEIRA, H. R. de; VIANELLO, R. P.; VALDISSER, P. A. M. R.; NASCIMENTO, M..
We aimed to apply genomic information based on SNP (single nucleotide polymorphism) markers for the genetic evaluation of the traits ?stay-green? (SG), plant architecture (PA), grain aspect (GA) and grain yield (GY) in common bean through Bayesian models. These models were compared in terms of prediction accuracy and ability for heritability estimation for each one of the mentioned traits. A total of 80 cultivars were genotyped for 377 SNP markers, whose effects were estimated by five different Bayesian models: Bayes A (BA), B (BB), C (BC), LASSO (BL) e Ridge regression (BRR). Although, prediction accuracies calculated by means of cross-validation have been similar within each trait, the BB model stood out for the trait SG, whereas the BRR was indicated...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Validação cruzada; Cross-validation; Feijão; Phaseolus Vulgaris; Marcador Molecular; Beans; Genetic markers; Marker-assisted selection.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095835
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Genomic prediction in contrast to a genome-wide association study in explaining heritable variation of complex growth traits in breeding populations of Eucalyptus. Repositório Alice
MÜLLER, B. S. F.; NEVES, L. G.; ALMEIDA FILHO, J. E. de; RESENDE JUNIOR, M. F. R.; MUÑOZ, P. R.; SANTOS, P. E. T. dos; PALUDZYSZYN FILHO, E.; KIRST, M.; GRATTAPAGLIA, D..
Background: The advent of high-throughput genotyping technologies coupled to genomic prediction methods established a new paradigm to integrate genomics and breeding. We carried out whole-genome prediction and contrasted it to a genome-wide association study (GWAS) for growth traits in breeding populations of Eucalyptus benthamii (n =505) and Eucalyptus pellita (n =732). Both species are of increasing commercial interest for the development of germplasm adapted to environmental stresses. Results: Predictive ability reached 0.16 in E. benthamii and 0.44 in E. pellita for diameter growth. Predictive abilities using either Genomic BLUP or different Bayesian methods were similar, suggesting that growth adequately fits the infinitesimal model. Genomic...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genomic selection; GWAS; Seleção genômica; SNP genotyping; Espécie exótica; Eucalipto; Melhoramento genético vegetal; Eucalyptus benthamii; Eucalyptus pellita; Genetic relationships; Marker-assisted selection; Plant breeding.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080149
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Genomic prediction in contrast to a genome-wide association study in explaining heritable variation of complex growth traits in breeding populations of Eucalyptus. Repositório Alice
MÜLLER, B. S. F.; NEVES, L. G.; ALMEIDA FILHO, J. E. de; RESENDE JUNIOR, M. F. R.; MUÑOZ, P. R.; SANTOS, P. E. T. dos; PALUDZYSZYN FILHO, E.; KIRST, M.; GRATTAPAGLIA, D..
Background: The advent of high-throughput genotyping technologies coupled to genomic prediction methods established a new paradigm to integrate genomics and breeding. We carried out whole-genome prediction and contrasted it to a genome-wide association study (GWAS) for growth traits in breeding populations of Eucalyptus benthamii (n =505) and Eucalyptus pellita (n =732). Both species are of increasing commercial interest for the development of germplasm adapted to environmental stresses. Results: Predictive ability reached 0.16 in E. benthamii and 0.44 in E. pellita for diameter growth. Predictive abilities using either Genomic BLUP or different Bayesian methods were similar, suggesting that growth adequately fits the infinitesimal model. Genomic...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genomic selection; GWAS; SNP genotyping; Genetic relationships; Seleção genômica; Eucalipto; Espécie exótica; Melhoramento genético vegetal; Eucalyptus benthamii; Eucalyptus pellita; Marker-assisted selection; Genetic relationships; Plant breeding.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080081
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Herança genética e associação de marcadores microssatélites à resistência à liriomyza sativae em meloeiro. Repositório Alice
LEITÃO, L. R. G..
O meloeiro (Cucumis melo L.) é uma hortaliça com destaque mundial. No Brasil, tem relevante importância socioeconômica na região Nordeste. A mosca-minadora, Liriomyza spp. (Diptera: Agromyzidae), é a principal praga da cultura, ocasionando sérios danos à planta e, consequentemente, reduzindo a produção e a qualidade dos frutos. O uso de genótipos resistentes constitui o método mais eficiente e sustentável de controle, entretanto, poucas fontes de resistência a esse inseto já foram identificadas em germoplasma de meloeiro. A elucidação da herança genética e o uso de marcadores moleculares são ferramentas que auxiliam na introgressão da resistência à mosca-minadora em híbridos comerciais de meloeiro. Considerando duas fontes de resistência à mosca-minadora...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Cucumis Melo; Leafminers; Antibiosis; USSR; Marker-assisted selection.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102482
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Improving durum wheat (Triticum turgidum L. var durum) grain yellow pigment content through plant breeding Ciencia e Investigación Agraria
Schulthess,Albert; Schwember,Andrés R.
A. Schulthess, and A.R. Schwember. 2013. Improving durum wheat (Triticum turgidum L. var durum) grain yellow pigment content through plant breeding. Cien Inv. 40(3): 475-490. Wheat grain yellow pigment content (GYPC) is an important trait that determines pasta quality. The main objective of this review is to examine the genetics regulating GYPC to enhance it through breeding, leading to improved pasta quality. Although GYPC is a polygenic trait, its high heritability has facilitated breeding internationally. GYPC is influenced by one or two major loci with additive effects plus several minor genes, and there is evidence showing that the phytoene synthase loci PSY1A and PSY1B are strong candidate genes that regulate GYPC. Nine Chilean durum wheat (Triticum...
Tipo: Journal article Palavras-chave: Durum wheat; Grain yellow pigment content; Improved color; PSY1A; PSY1B; Backcrossing; Marker-assisted selection.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300002
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Mapping aluminum tolerance loci in cereals: A tool available for crop breeding Electron. J. Biotechnol.
Inostroza-Blancheteau,Claudio; Soto,Braulio; Ibáñez,Cristian; Ulloa,Pilar; Aquea,Felipe; Arce-Johnson,Patricio; Reyes-Díaz,Marjorie.
Aluminum (Al) toxicity is the main factor limiting crop productivity in acidic soils around the world. In cereals, this problem reduces crop yields by 30-40%. The use of DNA-based markers linked to phenotypic traits is an interesting alternative approach. Strategies such as molecular marker-assisted selection (MAS) in conjunction with bioinformatics-based tools such as graphical genotypes (GGT) have been important for confirming introgression of genes or genomic regions in cereals but also to reduce the time and cost of identifying them through genetic selection. These biotechnologies also make it possible to identify target genes or quantitative trait loci (QTL) that can be potentially used in similar crops to increase their productivity. This review...
Tipo: Journal article Palavras-chave: Aluminum tolerance; ALMT1; Cereals; Marker-assisted selection; Organic acid.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400011
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Mixed model to multiple havest-location trial applied to genomic prediction in Coffea canephora. Repositório Alice
FERRÃO, L. F. V.; FERRÃO, R. G.; FERRAO, M. A. G.; FONSECA, A. F. A. da; GARCIA, A. A. F..
Genomic Selection (GS) has been studied in several crops with potential to increase the rates of genetic gain and reduce the length of breeding cycle. Despite the relevance, there is a modest number of reports applied to the genus Coffea. Nevertheless, the effective implementation depends on the ability to consider genomic models that represent with adequate reliability the breeding scenario in which the specie are inserted. Coffee experimentation, in general, is represented for evaluations in multiples sites and harvests (MET), in order to understand the interaction magnitude and predicting the performance of untested genotypes. Therefore, the main objective of this study was investigate GS models that accommodate MET modeling. A expansion of the...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Marker-assisted selection; Coffea canephora.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1067269
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Prolificidade dos animais caprinos selecionados para Estudos de Associação Ampla do Genoma (GWAS). Repositório Alice
AGUIAR, A. L. de; ALBUQUERQUE, M. A. M. de; PEREIRA, A. H. R.; GALVÃO, M. A. A.; SILVA, K. de M..
O estudo teve como objetivo identificar marcadores moleculares do tipo SNP associados à prolificidade em caprinos. Ao se agrupar as matrizes meias-irmãs pela linha paterna e analisar a prolificidade média, observou-se que existe variabilidade genética não somente entre as raças, mas também dentro de uma mesma raça. A raça Saanen mostrou a menor variabilidade para prolificidade para grupos de filhas entre os reprodutores da raça e a Moxotó foi a que apresentou maior variabilidade. Essas informações serão de grande importância nos estudos de associação ampla do genoma com o objetivo de se identificar marcadores para a prolificidade e, quando validadas, inseridas em programa de seleção assistida por marcadores.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: SNP; Seleção assistida; GDF9; Prolificidade; Marker-assisted selection; Genética animal; Marcador genético; Marcador molecular; Caprino; Animal genetics; Genetic markers; Goats; Molecular genetics.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084633
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Prospects for using conventional techniques and molecular biological tools to enhance efficiency of crop plants in low-nutrient environments: QTL mapping and mas for improved phosphorus uptake. Repositório Alice
HASH, C.T.; SCHAFFERT, R. E.; PEACOCK, J.M..
2001
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milheto; Grao de bico; Guandu; Fosforo; Raiz; Pearl millet; Chickpea; Pigeonpea; Phosphorus; Roots; Marker-assisted selection.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/485037
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