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FERREIRA, J. L.; CAIXETA, E. T.; CANIATO, F. F.; SETOTAW, T.; SANT'ANA, G. C.; FERREIRA, L. M.. |
Coffea arabica L. is a native coffee species probably originated in Abyssinia, now Ethiopia. The genetic diversity of C. arabica has economic implications directly related to profits by breeding for developing new varieties to a global market. The economic value of C. arabica genetic resources are estimated at US$ 420 million, considered a 10% discount rate. Understanding the extent of traits variability and genetic diversity is essential to guide crosses between genotypes, targeting the development of new varieties with high economic value. This chapter will present the C. arabica economic importance, primarily to Brazil, the most significant world producer; we will outline the origin and dispersion of arabica coffee and briefly show the leading germplasm... |
Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Diversidade genética; Café; Genética; Coffea Arábica; Marcador Molecular. |
Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132776 |
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ARIYOSHI, C.; SANT'ANA, G. C.; FELICIO, M. S.; SERA, G. H.; NOGUEIRA, L. M.; RODRIGUES, L. M. R.; FERREIRA, R. V.; SILVA, B. S. R. da; RESENDE, M. L. V. de; DESTÉFANO, S. A. L.; DOMINGUES, D. S.; PEREIRA, L. F. P.. |
Bacteria halo blight (BHB), a coffee plant disease caused by Pseudomonas syringae pv. garcae, has been gaining importance in producing mountain regions and mild temperatures areas as well as in coffee nurseries. Most Coffea arabica cultivars are susceptible to this disease. In contrast, a great source of genetic diversity and resistance to BHB are found in C. arabica Ethiopian accessions. Aiming to identify quantitative trait nucleotides (QTNs) associated with resistance to BHB and the influence of these genomic regions during the domestication of C. arabica, we conducted an analysis of population structure and a Genome-Wide Association Study (GWAS). For this, we used genotyping by sequencing (GBS) and phenotyping for resistance to BHB of a panel with 120... |
Tipo: Artigo de periódico |
Palavras-chave: Coffea Arábica; Genome; Disease resistance; Pseudomonas syringae group; Genome-wide association study. |
Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150817 |
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SANT'ANA, G. C.; PEREIRA, L. F. P.; POT, D.; IVAMOTO, S. T.; DOMINGUES, D. S.; FERREIRA, R. V.; PAGIATTO, N. F.; SILVA, B. S. R. da; NOGUEIRA, L. M.; KITZBERGER, C. S. G.; SCHOLZ, M. B. S.; OLIVEIRA, F. F. de; SERA, G. H.; PADILHA, L.; LABOUISSE, J-P.; GUYOT, R.; CHARMETANT, P.; LEROY, T.. |
Lipids, including the diterpenes cafestol and kahweol, are key compounds that contribute to the quality of coffee beverages. We determined total lipid content and cafestol and kahweol concentrations in green beans and genotyped 107 Coffea arabica accessions, including wild genotypes from the historical FAO collection from Ethiopia. A genome-wide association study was performed to identify genomic regions associated with lipid, cafestol and kahweol contents and cafestol/kahweol ratio. Using the diploid Coffea canephora genome as a reference, we identified 6,696 SNPs. Population structure analyses suggested the presence of two to three groups (K = 2 and K = 3) corresponding to the east and west sides of the Great Rift Valley and an additional group formed by... |
Tipo: Artigo de periódico |
Palavras-chave: Quality of coffee beverages; Lipids; Green beans; Genomics; Genome. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108734 |
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PEREIRA, L. F. P.; SCHENK, J. C. M.; MALUF, M. P.; SANT'ANA, G. C.; NOGUEIRA, L.; PEREIRA, L. A.; SILVA, B. S. R. da; GUIMARÃES, P. de S.; GUERREIRO FILHO, O.; PADILHA, L.. |
A demanda crescente por cafés especiais e a an a t t a a a mais a participação de produtores neste segmento. Além da origem, da sustentabilidade na produção e da avaliação a diferenciados quant a a t n a a rastreabilidade da produção a a n a exigências a a a t a do produto. Dentro deste processo, a crescente demanda pelo atestado da pureza varietal vem exigindo o desenvolvimento de ferramentas que possam garantir a diferenciação inequívoca do produto comercial, e que viabilizem sua proteção intelectual. Assim, nosso objetivo foi desenvolver marcadores SNP, identificados em análises de genotipagem pelo sequenciamento (GBS), voltados à discriminação de cultivares de café arábica. Quarenta e oito cultivares foram genotipadas pelo sequenciamento em plataforma... |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: GBS; Discriminação de cultivar; Cultivar discrimination; Coffea Arábica. |
Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113242 |
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SILVA, B. S. R. da; SANT'ANA, G. C.; CHAVES, C. L.; ANDROCIOLI, L. G.; FERREIRA, R. V.; SERA, G. H.; CHARMETANT, P.; LEROY, T.; POT, D.; DOMINGUES, D. S.; PEREIRA, L. F. P.. |
genotypes is highly relevant to optimize the use of genetic resources for breeding purposes. In this study, we evaluated genetic diversity, clustering analysis based on Jaccard?s coefficient and population structure in 33 genotypes of C. arabica and of three diploid Coffea species (C. canephora, C. eugenioides and C. racemosa) using 30 SSR markers. A total of 206 alleles were identified, with a mean of 6.9 over all loci. The set of SSR markers was able to discriminate all genotypes and revealed that Ethiopian accessions presented higher genetic diversity than commercial varieties. Population structure analysis indicated two genetic groups, one corresponding to Ethiopian accessions and another corresponding predominantly to commercial cultivars. Thirty-four... |
Tipo: Artigo de periódico |
Palavras-chave: Coffea spp; SSR markers; Genetic diversity; Population structure and relationships; Cultivated and wild gene pools. |
Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116279 |
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