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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
07/01/2015 |
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Data da última atualização: |
09/09/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FONSECA, A. F. A. da.; SEDIYAMA, T.; CRUZ, C. D.; SAKIYAMA, N. S.; FERRÃO, R. G.; FERRÃO, M. A. G.; BRAGANÇA, S. M. |
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Afiliação: |
Aymbiré Francisco Almeida da Fonseca, Incaper/Embrapa Café; Cosme Damião Cruz; Ney Sussumu Sakiyama; Romário Gava Ferrão, Incaper; Maria Amélia Gava Ferrão, Incaper/Embrapa Café; Scheilla Marina Bragança, Incaper. |
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Título: |
Discriminant analysis for the classification and clustering of robusta coffee genotypes. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, v. 4, n. 3, p. 285-289, 2004. |
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ISSN: |
1518-7853 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated the adequacy of the composition of three clonal Coffea canephora varieties recommended for the State of Espírito Santo by a multivariate method designated discriminant analysis. This method consists in the establishment of functions that enable the classification of a given individual into one, among various distinct populations, reducing the probability of a misclassification. It simultaneously considers measures of several traits, in order to give the new variety homogeneity. The original classification of genotypes in the three studied varieties, based on agronomical criteria, maintained expressive concordance with the results of the discriminant analysis, with an apparent deviation rate of only 6.25%. Corrected discriminant functions were also proposed, capable of classifying a new genotype into one of the three clonal varieties to be used in improvement programs, eliminating the subjectivity of the clustering process. |
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Palavras-Chave: |
Biotecnología; Café conilon; Coffea canephora; Genética; Genotipos; Plantas para uso industrial. |
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Thesaurus NAL: |
Coffee; Genetic improvement; Genotypes. |
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Categoria do assunto: |
-- |
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URL: |
http://biblioteca.incaper.es.gov.br/digital/bitstream/item/444/1/2004-trabalho1-MaAmelia-AYMBIRE.pdf
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Marc: |
LEADER 01859naa a2200313 a 4500
001 1004803
005 2019-09-09
008 2004 bl uuuu u00u1 u #d
022 $a1518-7853
100 1 $aFONSECA, A. F. A. da.
245 $aDiscriminant analysis for the classification and clustering of robusta coffee genotypes.$h[electronic resource]
260 $c2004
520 $aThis study evaluated the adequacy of the composition of three clonal Coffea canephora varieties recommended for the State of Espírito Santo by a multivariate method designated discriminant analysis. This method consists in the establishment of functions that enable the classification of a given individual into one, among various distinct populations, reducing the probability of a misclassification. It simultaneously considers measures of several traits, in order to give the new variety homogeneity. The original classification of genotypes in the three studied varieties, based on agronomical criteria, maintained expressive concordance with the results of the discriminant analysis, with an apparent deviation rate of only 6.25%. Corrected discriminant functions were also proposed, capable of classifying a new genotype into one of the three clonal varieties to be used in improvement programs, eliminating the subjectivity of the clustering process.
650 $aCoffee
650 $aGenetic improvement
650 $aGenotypes
653 $aBiotecnología
653 $aCafé conilon
653 $aCoffea canephora
653 $aGenética
653 $aGenotipos
653 $aPlantas para uso industrial
700 1 $aSEDIYAMA, T.
700 1 $aCRUZ, C. D.
700 1 $aSAKIYAMA, N. S.
700 1 $aFERRÃO, R. G.
700 1 $aFERRÃO, M. A. G.
700 1 $aBRAGANÇA, S. M.
773 $tCrop Breeding and Applied Biotechnology$gv. 4, n. 3, p. 285-289, 2004.
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Registro original: |
Biblioteca Rui Tendinha (BRT) |
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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
03/01/2017 |
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Data da última atualização: |
18/07/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SOBREIRA, F. M.; OLIVEIRA, A. C. B. de; PEREIRA, A. A.; GUARÇONI M., A.; SAKIYAMA, N. S. |
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Afiliação: |
Fabrício Moreira Sobreira, IFC; Antonio Carlos Baião de Oliveira, Embrapa Café/EPAMIG; Antonio Alves Pereira, Embrapa Café/(EPAMIG); Andre Guarçoni Martins, Incaper; Ney Sussumu Sakiyama, UFV. |
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Título: |
Divergence among arabica coffee genotypes for sensory quality. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 10, n. 10, p. 1442-1448, out. 2016. |
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DOI: |
10.21475/ajcs.2016.10.10.p7430 |
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Idioma: |
Português |
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Conteúdo: |
The production of specialty coffees is the main criterion to add value to the product. However, there is a lack of information regarding genetic variability of C. arabica for quality improvement. The aim of this study was to analyze the genetic divergence among Coffee arabica genotypes regarding the potential cup quality, possible limitations and their potential use in breeding programs to improve quality. We evaluated 101 coffee genotypes from the Germplasm Active Bank of Empresa de Pesquisa Agropecuária de Minas Gerais, covering different groups of genealogical origin. A randomized block design was used with two replications. Sensory analysis of the beverage was performed by two tasters per sample (repetition), using the Cup of Excellence methodology enhanced by the Brazilian Specialty Coffee Association. The attributes assessed were clean cup, sweetness, acidity, body, flavor, aftertaste, balance, overall and final score. K-means and Ward clustering methods were used to study the genotypes divergence. Based on sensory scores, the formed clusters differed with regards to all sensory characteristics (P ? 0.01). Three K-means clusters were formed among 40, 45 and 16 genotypes, with final average scores of 80.11, 83.17 and 87.56 points, respectively. Ninety percent of the genotypes evaluated have the genetic potential to produce specialty coffees. The observed divergence indicates the potential of genetic gains for quality and the Híbrido de Timor germplasm can be used for this purpose. MenosThe production of specialty coffees is the main criterion to add value to the product. However, there is a lack of information regarding genetic variability of C. arabica for quality improvement. The aim of this study was to analyze the genetic divergence among Coffee arabica genotypes regarding the potential cup quality, possible limitations and their potential use in breeding programs to improve quality. We evaluated 101 coffee genotypes from the Germplasm Active Bank of Empresa de Pesquisa Agropecuária de Minas Gerais, covering different groups of genealogical origin. A randomized block design was used with two replications. Sensory analysis of the beverage was performed by two tasters per sample (repetition), using the Cup of Excellence methodology enhanced by the Brazilian Specialty Coffee Association. The attributes assessed were clean cup, sweetness, acidity, body, flavor, aftertaste, balance, overall and final score. K-means and Ward clustering methods were used to study the genotypes divergence. Based on sensory scores, the formed clusters differed with regards to all sensory characteristics (P ? 0.01). Three K-means clusters were formed among 40, 45 and 16 genotypes, with final average scores of 80.11, 83.17 and 87.56 points, respectively. Ninety percent of the genotypes evaluated have the genetic potential to produce specialty coffees. The observed divergence indicates the potential of genetic gains for quality and the Híbrido de Timor germplasm can be used for th... Mostrar Tudo |
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Palavras-Chave: |
Bourbon caturra; Genetic resources; Híbrido de timor; Specialty coffee. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/123456789/3633/1/Divergence-among-arabica-coffee.pdf
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Marc: |
LEADER 02216naa a2200229 a 4500
001 1013850
005 2019-07-18
008 2016 bl uuuu u00u1 u #d
024 7 $a10.21475/ajcs.2016.10.10.p7430$2DOI
100 1 $aSOBREIRA, F. M.
245 $aDivergence among arabica coffee genotypes for sensory quality.$h[electronic resource]
260 $c2016
520 $aThe production of specialty coffees is the main criterion to add value to the product. However, there is a lack of information regarding genetic variability of C. arabica for quality improvement. The aim of this study was to analyze the genetic divergence among Coffee arabica genotypes regarding the potential cup quality, possible limitations and their potential use in breeding programs to improve quality. We evaluated 101 coffee genotypes from the Germplasm Active Bank of Empresa de Pesquisa Agropecuária de Minas Gerais, covering different groups of genealogical origin. A randomized block design was used with two replications. Sensory analysis of the beverage was performed by two tasters per sample (repetition), using the Cup of Excellence methodology enhanced by the Brazilian Specialty Coffee Association. The attributes assessed were clean cup, sweetness, acidity, body, flavor, aftertaste, balance, overall and final score. K-means and Ward clustering methods were used to study the genotypes divergence. Based on sensory scores, the formed clusters differed with regards to all sensory characteristics (P ? 0.01). Three K-means clusters were formed among 40, 45 and 16 genotypes, with final average scores of 80.11, 83.17 and 87.56 points, respectively. Ninety percent of the genotypes evaluated have the genetic potential to produce specialty coffees. The observed divergence indicates the potential of genetic gains for quality and the Híbrido de Timor germplasm can be used for this purpose.
653 $aBourbon caturra
653 $aGenetic resources
653 $aHíbrido de timor
653 $aSpecialty coffee
700 1 $aOLIVEIRA, A. C. B. de
700 1 $aPEREIRA, A. A.
700 1 $aGUARÇONI M., A.
700 1 $aSAKIYAMA, N. S.
773 $tAustralian Journal of Crop Science$gv. 10, n. 10, p. 1442-1448, out. 2016.
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