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| Registros recuperados: 41 | |
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| BARRETO, F. Z.; ROSA, J. R. B. F.; BALSALOBRE, T. W. A.; PASTINA, M. M.; SILVA, R. R.; HOFFMANN, H. P.; SOUZA, A. P. de; GARCIA, A. A. F.; CARNEIRO, M. S.. |
| Sugarcane (Saccharum spp.) has a complex genome with variable ploidy and frequent aneuploidy, which hampers the understanding of phenotype and genotype relations. Despite this complexity, genome-wide association studies (GWAS) may be used to identify favorable alleles for target traits in core collections and then assist breeders in better managing crosses and selecting superior genotypes in breeding populations. Therefore, in the present study, we used a diversity panel of sugarcane, called the Brazilian Panel of Sugarcane Genotypes (BPSG), with the following objectives: (i) estimate, through a mixed model, the adjusted means and genetic parameters of the five yield traits evaluated over two harvest years; (ii) detect population structure, linkage... |
| Tipo: Artigo de periódico |
Palavras-chave: Associação ampla do genoma; GWAS; Painel Brasileiro de Genótipos de Cana-de-Açúcar; BPSG; Cana de Açúcar; Genoma. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113513 |
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| AONO, A. H.; FERREIRA, R. C. U.; MORAES, A. da C. L.; LARA, L. A. de C.; PIMENTA, R. J. G.; COSTA, E. A.; PINTO, L. R.; LANDELL, M. G. de A.; SANTOS, M. F.; JANK, L.; BARRIOS, S. C. L.; VALLE, C. B.; CHIARI, L.; GARCIA, A. A. F.; KUROSHU, R. M.; LORENA, A. C.; GORJANC, G.; SOUZA, A. P. de. |
| Poaceae, among the most abundant plant families, includes many economically important polyploid species, such as forage grasses and sugarcane (Saccharum spp.). These species have elevated genomic complexities and limited genetic resources, hindering the application of marker-assisted selection strategies. Currently, the most promising approach for increasing genetic gains in plant breeding is genomic selection. However, due to the polyploidy nature of these polyploid species, more accurate models for incorporating genomic selection into breeding schemes are needed. This study aims to develop a machine learning method by using a joint learning approach to predict complex traits from genotypic data. Biparental populations of sugarcane and two species of... |
| Tipo: Artigo de periódico |
Palavras-chave: Cana de Açúcar; Gramínea Forrageira; Recurso Genético; Forage grasses; Genetic resources; Plant breeding; Poaceae; Polyploidy; Saccharum; Sugarcane. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150365 |
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| 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 de periódico |
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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| KRAUSE, M. D.; DIAS, K. O. das G.; SANTOS, J. P. R. dos; OLIVEIRA, A. A. de; GUIMARAES, L. J. M.; PASTINA, M. M.; MARGARIDO, G. R. A.; GARCIA, A. A. F.. |
| Genomic selection has been implemented in several plant and animal breeding programs and it has proven to improve efficiency and maximize genetic gains. Phenotypic data of grain yield was measured in 147 maize (Zea mays L.) singlecross hybrids at 12 environments. Single-cross hybrids genotypes were inferred based on their parents (inbred lines) via single nucleotide polymorphism (SNP) markers obtained from genotyping-by-sequencing (GBS). Factor analytic multiplicative genomic best linear unbiased prediction (GBLUP) models, in the framework of multienvironment trials, were used to predict grain yield performance of unobserved tropical maize single-cross hybrids. Predictions were performed for two situations: untested hybrids (CV1), and hybrids evaluated in... |
| Tipo: Artigo de periódico |
Palavras-chave: Milho; Melhoramento Genético Vegetal; Genótipo. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1124456 |
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| AZEVEDO, G. C.; CHEAVEGATTI-GIANOTTO, A.; NEGRI, B. F.; HUFNAGEL, B.; LANA, U. G. P.; SILVA, L. C.; MAGALHAES, J. V.; GARCIA, A. A. F.; SOUSA, S. M. de; GUIMARAES, C. T.. |
| Tipo: Parte de livro |
Palavras-chave: Milho; Gene; Fósforo; Quantitative trait loci. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/977225 |
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| PRIOLLI, R. H. G.; RAMOS, L. C. S.; POT, D.; MOLLER, M.; GALLO, P. B.; PASTINA, M. M.; GARCIA, A. A. F.; YAMAMOTO, P. Y.; LANNES, S. D.; VIEIRA, L. G. E.; FERREIRA, L. P.; MAZZAFERA, P.; PEREIRA, L. F. P.; COLOMBO, C. A.. |
| Mapas genéticos com base em marcadores moleculares têm sido desenvolvidos em grande número de plantas como uma estratégia eficaz para seleção assistida pelo marcador. No presente estudo, marcadores AFLP e SSR foram utilizados para construção de um mapa genético em uma população F2 criada a partir da autofecundação do híbrido F1 do cruzamento entre Coffea arabica e Coffea canephora. Foram identificados 349 marcadores AFLP e 50 alelos SSR segregantes em 90 plantas F2. Para construção do mapa, apenas marcas em dose única e segregação 3:1 no F2 foram consideradas (248 marcadores AFLP e SSR 27 alelos, ou 68,9% dos marcadores polimórficos). Cento e sessenta e nove marcadores foram mapeados (155 AFLP e 14 SSR). Trinta e sete grupos ligação correspondentes a um... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Melhoramento genético; Seleção assistida.; Café; Marcador Molecular.. |
| Ano: 2009 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/903744 |
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| SOUZA, A. P.; MORAES, A. C. L.; LARA, L. A. C.; FERREIRA, R. C. U.; DÉO, T. G.; MARTIN, F. B.; VALLE, C. B.; GARCIA, A. A. F.; VIGNA, B. B. Z.. |
| Large areas of Brazil are destined for the cultivation of pasture, where the purpose is to feed cattle. Among these, it stands out Urochloa humidicola (syn. Brachiaria humidicola), an apomictic polyploid species that tolerates waterlogged soils. |
| Tipo: Separatas |
Palavras-chave: Brachiaria Humidicola; Pastagem; Pastures; Pasture plants; Plant breeding. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115460 |
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| VIGNA, B. B. Z.; SANTOS, J. C. S.; JUNGMANN, L.; VALLE, C. B. do; MOLLINARI, M.; PASTINA, M. M.; PAGLIARINI, M. S.; GARCIA, A. A. F.; SOUZA, A. P.. |
| The African species Urochloa humidicola (Rendle) Morrone & Zuloaga (syn. Brachiaria humidicola (Rendle) Schweick.) is an important perennial forage grass found throughout the tropics. This species is polyploid, ranging from tetra to nonaploid, and apomictic, which makes genetic studies challenging; therefore, the number of currently available genetic resources is limited. The genomic architecture and evolution of U. humidicola and the molecular markers linked to apomixis were investigated in a full-sib F1 population obtained by crossing the sexual accession H031 and the apomictic cultivar U. humidicola cv. BRS Tupi, both of which are hexaploid. A simple sequence repeat (SSR)-based linkage map was constructed for the species from 102 polymorphic and... |
| Tipo: Artigo de periódico |
Palavras-chave: Mapeamento genético; Gene; Planta forrageira. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057798 |
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| PERSEGUINI, J. M. C. K.; CHIORATTO, A. F.; ZUCCHI, M. I.; COLOMBO, C. A.; CARBONELL, S. A. M.; MONDEGO, J. M. C.; GAZAFFI, R.; GARCIA, A. A. F.; CAMPOS, T. de; SOUZA, A. P. de; RUBIANO, L. B.. |
| A wide array of molecular markers has been used to investigate the genetic diversity among common bean species. However, the best combination of markers for studying such diversity among common bean cultivars has yet to be determined. Few reports have examined the genetic diversity of the carioca bean, commercially one of the most important common beans in Brazil. In this study, we examined the usefulness of two molecular marker systems (simple sequence repeats - SSRs and amplified fragment length polymorphisms - AFLPs) for assessing the genetic diversity of carioca beans. The amount of information provided by Roger?s modified genetic distance was used to analyze SSR data and Jaccards similarity coefficient was used for AFLP data. Seventy SSRs were... |
| Tipo: Artigo de periódico |
Palavras-chave: Marcador microssatélite; Feijão carioca; Frijoles; Variación genética.; Repeticiones de microsatélite; Marcadores genéticos; Fitomejoramiento; Melhoramento genético vegetal; Feijão; Phaseolus vulgaris; Variação genética; Marcador genético; Polimorfismo genético; Plant breeding; Beans; Genetic variation; Genetic markers; Microsatellite repeats; Genetic polymorphism.. |
| Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/902577 |
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| FERREIRA, R. C. U.; LARA, L. A. de C.; CHIARI, L.; BARRIOS, S. C. L.; VALLE, C. B. do; VALERIO, J. R.; TORRES, F. Z. V.; GARCIA, A. A. F.; SOUZA, A. P. de. |
| Urochloa decumbens (Stapf) R. D. Webster is one of the most important African forage grasses in Brazilian beef production. Currently available genetic-genomic resources for this species are restricted mainly due to polyploidy and apomixis. Therefore, crucial genomic-molecular studies such as the construction of genetic maps and the mapping of quantitative trait loci (QTLs) are very challenging and consequently affect the advancement of molecular breeding. The objectives of this work were to (i) construct an integrated U. decumbens genetic map for a full-sibling progeny using GBS-based markers with allele dosage information, (ii) detect QTLs for spittlebug (Notozulia entreriana) resistance, and (iii) seek putative candidate genes involved in defense against... |
| Tipo: Artigo de periódico |
Palavras-chave: Allele dosage; Linkage map; Signalgrass; SNP; Brachiaria; Polyploidy; Quantitative traits. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1106558 |
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| PERSEGUINI, J. M. K. C.; OBLESSUC, P. R.; ROSA, J. R. B. F.; GOMES, K. A.; CHIORATO, A. F.; CARBONELL, S. A. M.; GARCIA, A. A. F.; VIANELLO, R. P.; BENCHIMOL-REIS, L. L.. |
| The common bean (Phaseolus vulgaris L.) is the world?s most important legume for human consumption. Anthracnose (ANT; Colletotrichum lindemuthianum) and angular leaf spot (ALS; Pseudocercospora griseola) are complex diseases that cause major yield losses in common bean. Depending on the cultivar and environmental conditions, anthracnose and angular leaf spot infections can reduce crop yield drastically. This study aimed to estimate linkage disequilibrium levels and identify quantitative resistance loci (QRL) controlling resistance to both ANT and ALS diseases of 180 accessions of common bean using genomewide association analysis. A randomized complete block design with four replicates was performed for the ANT and ALS experiments, with four plants per... |
| Tipo: Artigo de periódico |
Palavras-chave: Feijão; Phaseolus vulgaris; Mancha foliar; Antracnose; Colletotrichum lindemuthianum; Genoma. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076304 |
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| LARA, L. A. de C.; SANTOS, M. F.; JANK, L.; CHIARI, L.; VILELA, M. de M.; AMADEU, R. R.; SANTOS, J. P. R. dos; SILVA, F. G. da; ZENG, Z.-B.; GARCIA, A. A. F.. |
| Genomic selection is an efficient approach to get shorter breeding cycles in recurrent selection programs and greater genetic gains with selection of superior individuals. Despite advances in genotyping techniques, genetic studies for polyploid species have been limited to a rough approximation of studies in diploid species. The major challenge is to distinguish the different types of heterozygotes present in polyploid populations. In this work, we evaluated different genomic prediction models applied to a recurrent selection population of 530 genotypes of Panicum maximum, an autotetraploid forage grass. We ,also investigated the effect of the allele dosage in the prediction, i.e., considering tetraploid (GS-TD) or diploid (GS-DD) allele dosage. A... |
| Tipo: Artigo de periódico |
Palavras-chave: Plant breeding; Guinea; Genotyping; Polyploidy; Genomics; Prediction. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1117941 |
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| DEO, T. G.; FERREIRA, R. C. U.; LARA, L. A. C.; MORAES, A. C. L.; ALVES-PEREIRA, A.; OLIVEIRA, F. A. de; GARCIA, A. A. F.; SANTOS, M. F.; JANK, L.; SOUZA, A. P. de. |
| Tipo: Artigo de periódico |
Palavras-chave: Variabilidade genética; Genetic variability; Alimentação animal; Guinea grass mosaic virus. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1128029 |
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| PEREIRA, G. S.; SOUZA, V. F.; PARRELLA, R. A. da C.; DAMASCENO, C. M. B.; SIMEONE, M. L. F.; SCHAFFERT, R. E.; BRACONNIER, S.; PASTINA, M. M.; GARCIA, A. A. F.; MAGALHAES, J. V.. |
| Tipo: Parte de livro |
Palavras-chave: Genética; Sorgo; Sorghum Bicolor.; Quantitative trait loci.. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/974195 |
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| Registros recuperados: 41 | |
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