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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
10/02/2015 |
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Data da última atualização: |
08/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; SANTANA, F. A.; OLIVEIRA, L. A. de; SANTOS, V. da S. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; FERNANDA ALVES SANTANA, UFRB; LUCIANA ALVES DE OLIVEIRA, CNPMF; VANDERLEI DA SILVA SANTOS, CNPMF. |
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Título: |
Genotypic variation of traits related to quality of cassava roots using affinity propagation algorithm. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Scientia Agricola, v.72, n.1, p.53-61, January/February 2015. |
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ISSN: |
0103-9016 |
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DOI: |
10.1590/0103-9016-2014-0043 |
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Idioma: |
Inglês |
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Conteúdo: |
The conservation, sustainable evaluation and use of cassava (Manihot esculenta Crantz) genetic resources are essential to the development of new commercial varieties. This study aimed to evaluate the quality of cassava roots and to estimate genetic ariation and clustering in cassava germplasm using the Affinity Propagation algorithm (AP), which is based on the concept of "message passing" between data points. AP finds "exemplars" of each group and members of the input set representative of clusters. The genotypic data of 474 cassava accessions were evaluated over a period of two years for starch yield (StYi), root dry matter (DMC), amylose content (AML), and the level of cyanogenic compounds (CyC). The AP algorithm enabled the formation of nine diversity groups, whose number reflects the high genetic diversity of this germplasm. A high homogeneity of genetic distances was observed within all the groups, except for two groups in which there was a partial overlap caused mainly by a high variation of the CyC trait. In addition, no relationship between the genetic structure and CyC (sweet and bitter cassava) was observed. Analysis of variance of the nine clusters confirmed the presence of differences between the groups. Thus, the results of this study can be used in future breeding programs (hybridization or selection) to introduce new genetic variability into commercial cultivars to avoid problems related to low genetic variation and to improve the quality of cassava roots. Keywords: germplasm, amylose content, cyanogenic compounds, yield MenosThe conservation, sustainable evaluation and use of cassava (Manihot esculenta Crantz) genetic resources are essential to the development of new commercial varieties. This study aimed to evaluate the quality of cassava roots and to estimate genetic ariation and clustering in cassava germplasm using the Affinity Propagation algorithm (AP), which is based on the concept of "message passing" between data points. AP finds "exemplars" of each group and members of the input set representative of clusters. The genotypic data of 474 cassava accessions were evaluated over a period of two years for starch yield (StYi), root dry matter (DMC), amylose content (AML), and the level of cyanogenic compounds (CyC). The AP algorithm enabled the formation of nine diversity groups, whose number reflects the high genetic diversity of this germplasm. A high homogeneity of genetic distances was observed within all the groups, except for two groups in which there was a partial overlap caused mainly by a high variation of the CyC trait. In addition, no relationship between the genetic structure and CyC (sweet and bitter cassava) was observed. Analysis of variance of the nine clusters confirmed the presence of differences between the groups. Thus, the results of this study can be used in future breeding programs (hybridization or selection) to introduce new genetic variability into commercial cultivars to avoid problems related to low genetic variation and to improve the quality of cassava roots. Key... Mostrar Tudo |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02177naa a2200205 a 4500
001 2008378
005 2016-03-08
008 2015 bl uuuu u00u1 u #d
022 $a0103-9016
024 7 $a10.1590/0103-9016-2014-0043$2DOI
100 1 $aOLIVEIRA, E. J. de
245 $aGenotypic variation of traits related to quality of cassava roots using affinity propagation algorithm.
260 $c2015
520 $aThe conservation, sustainable evaluation and use of cassava (Manihot esculenta Crantz) genetic resources are essential to the development of new commercial varieties. This study aimed to evaluate the quality of cassava roots and to estimate genetic ariation and clustering in cassava germplasm using the Affinity Propagation algorithm (AP), which is based on the concept of "message passing" between data points. AP finds "exemplars" of each group and members of the input set representative of clusters. The genotypic data of 474 cassava accessions were evaluated over a period of two years for starch yield (StYi), root dry matter (DMC), amylose content (AML), and the level of cyanogenic compounds (CyC). The AP algorithm enabled the formation of nine diversity groups, whose number reflects the high genetic diversity of this germplasm. A high homogeneity of genetic distances was observed within all the groups, except for two groups in which there was a partial overlap caused mainly by a high variation of the CyC trait. In addition, no relationship between the genetic structure and CyC (sweet and bitter cassava) was observed. Analysis of variance of the nine clusters confirmed the presence of differences between the groups. Thus, the results of this study can be used in future breeding programs (hybridization or selection) to introduce new genetic variability into commercial cultivars to avoid problems related to low genetic variation and to improve the quality of cassava roots. Keywords: germplasm, amylose content, cyanogenic compounds, yield
650 $aCassava
650 $aMandioca
700 1 $aSANTANA, F. A.
700 1 $aOLIVEIRA, L. A. de
700 1 $aSANTOS, V. da S.
773 $tScientia Agricola$gv.72, n.1, p.53-61, January/February 2015.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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| 6. |  | SOUSA, V. A. de (coord.). State of forest genetic resources conservation and management in Brazil: second national report. Brasília, DF: Brazilian Ministry of Agriculture, Livestock and Food Supply; Secretariat of Innovation, Sustainable Development and Irrigation, 2022. 172 p. Members of the internal Embrapa Forestry Committee: Yeda Maria Malheiros Oliveira; Ananda Virginia de Aguiar. Collaborators: Ana Cristina Mazzocato; Carlos Eduardo Pereira Tamasauskas; Elisete Maria de Freitas; Eniel David Cruz; Estefano...| Tipo: Autoria/Organização/Edição de Livros |
| Biblioteca(s): Embrapa Florestas; Embrapa Pecuária Sul; Embrapa Semiárido. |
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| 8. | | DAROS, T. L.; SOUSA, V. A. de. Efeito do meio de cultura na germinação do pólen de espinheira santa (Maytenus ilicifolia Mart.). In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 2., 2003, Colombo. Anais. Colombo: Embrapa Florestas, 2003. 065R. 1 CD-ROM. (Embrapa Florestas. Documentos, 86). Organizado por Patricia Póvoa de Mattos, Celso Garcia Auer, Rejane Stumpf Sberze, Katia Regina Pichelli e Paulo César Botosso.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 19. | | AGUIAR, A. V. de; SOUSA, V. A. de. Banco de germoplasma de pínus. In: WORKSHOP DE CURADORES DE GERMOPLASMA DO BRASIL, 2011, Campinas. Anais [e] resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2011. p. 284. Pôster.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 243 | |
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