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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
08/10/2008 |
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Data da última atualização: |
19/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FUKUDA, W.; SANTOS, V.; OLIVEIRA, L.; PEREIRA, M.; CEBALLOS, H.; NUTTI, M.; CARVALHO, J.; DITA, MIGUEL. |
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Afiliação: |
Wania Maria Gonçalves Fukuda, CNPMF; Vanderlei da Silva Santos, CNPMF; Luciana Alves de Oliveira, CNPMF; Marcio Eduardo Canto Pereira, CNPMF; Hernan Ceballos, CIAT; Marilia Nutti, CTAA; José Carvalho, CTAA; Miguel Angel Dita, CNPMF. |
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Título: |
Breeding cassava for enhancement of carotenoid, iron and zinc contents. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium.Ghent:: IPBO, 2008. p. 106. |
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Idioma: |
Inglês |
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Notas: |
S7-9. |
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Conteúdo: |
The goal of this project is to improve the nutritional quality of cassava varieties for provitamin A, Fe and Zn contents, in the HarvestPlus program. Initialy, a total of 1800 cassava accessions from the germplasm bank at Embrapa Cassava & Tropical Fruits, were screened. Total carotenoid content in one-year old roots of the 72 landraces selected ranged from 0.63 to 15.51 ug.g-1 (fresh weight). It was observed that accessions with higher total carotenoid contents also presented elevated HCN levels. Based on, the low cyanogenic potential required for cassava consumption as boiled roots (where carotenoid retention is higher), 7 landraces with total carotenoid concentrations ranging from 1.50 to 4.49 ug.g-¹ were selected as parents. In the first generation (228 genotypes), hybrids with total carotenoid increment of more than 100% in relation to the parents were identified. Total carotenoid levels in the population ranged from 0.87 to 10.47 ug.g-¹. Analyses of beta-carotenes revealed an approximated, but not linear relation with the total carotenoid contents. In the second generation (136 hybrids) additional increment of total carotenoid contents with respect to the first was verified, reaching the maxim concentration of 12.41 ug.g-¹. Regarding Fe and Zn contens, the 72 yellow landraces initially selected as well as all the hybrids of two generations were evaluated by atomic absorption. Keeping low HCN and hight and high total carotenoid concentrations as priority, hybrids with more than 10 ug.g-¹ of total carotenoids and high levels of Zn and Fe were selected. These hybrids are currently under agronomical evaluations to be recommended as varieties. MenosThe goal of this project is to improve the nutritional quality of cassava varieties for provitamin A, Fe and Zn contents, in the HarvestPlus program. Initialy, a total of 1800 cassava accessions from the germplasm bank at Embrapa Cassava & Tropical Fruits, were screened. Total carotenoid content in one-year old roots of the 72 landraces selected ranged from 0.63 to 15.51 ug.g-1 (fresh weight). It was observed that accessions with higher total carotenoid contents also presented elevated HCN levels. Based on, the low cyanogenic potential required for cassava consumption as boiled roots (where carotenoid retention is higher), 7 landraces with total carotenoid concentrations ranging from 1.50 to 4.49 ug.g-¹ were selected as parents. In the first generation (228 genotypes), hybrids with total carotenoid increment of more than 100% in relation to the parents were identified. Total carotenoid levels in the population ranged from 0.87 to 10.47 ug.g-¹. Analyses of beta-carotenes revealed an approximated, but not linear relation with the total carotenoid contents. In the second generation (136 hybrids) additional increment of total carotenoid contents with respect to the first was verified, reaching the maxim concentration of 12.41 ug.g-¹. Regarding Fe and Zn contens, the 72 yellow landraces initially selected as well as all the hybrids of two generations were evaluated by atomic absorption. Keeping low HCN and hight and high total carotenoid concentrations as priority, hybrids with ... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02345naa a2200217 a 4500
001 1637542
005 2009-02-19
008 2008 bl uuuu u00u1 u #d
100 1 $aFUKUDA, W.
245 $aBreeding cassava for enhancement of carotenoid, iron and zinc contents.
260 $c2008
500 $aS7-9.
520 $aThe goal of this project is to improve the nutritional quality of cassava varieties for provitamin A, Fe and Zn contents, in the HarvestPlus program. Initialy, a total of 1800 cassava accessions from the germplasm bank at Embrapa Cassava & Tropical Fruits, were screened. Total carotenoid content in one-year old roots of the 72 landraces selected ranged from 0.63 to 15.51 ug.g-1 (fresh weight). It was observed that accessions with higher total carotenoid contents also presented elevated HCN levels. Based on, the low cyanogenic potential required for cassava consumption as boiled roots (where carotenoid retention is higher), 7 landraces with total carotenoid concentrations ranging from 1.50 to 4.49 ug.g-¹ were selected as parents. In the first generation (228 genotypes), hybrids with total carotenoid increment of more than 100% in relation to the parents were identified. Total carotenoid levels in the population ranged from 0.87 to 10.47 ug.g-¹. Analyses of beta-carotenes revealed an approximated, but not linear relation with the total carotenoid contents. In the second generation (136 hybrids) additional increment of total carotenoid contents with respect to the first was verified, reaching the maxim concentration of 12.41 ug.g-¹. Regarding Fe and Zn contens, the 72 yellow landraces initially selected as well as all the hybrids of two generations were evaluated by atomic absorption. Keeping low HCN and hight and high total carotenoid concentrations as priority, hybrids with more than 10 ug.g-¹ of total carotenoids and high levels of Zn and Fe were selected. These hybrids are currently under agronomical evaluations to be recommended as varieties.
700 1 $aSANTOS, V.
700 1 $aOLIVEIRA, L.
700 1 $aPEREIRA, M.
700 1 $aCEBALLOS, H.
700 1 $aNUTTI, M.
700 1 $aCARVALHO, J.
700 1 $aDITA, MIGUEL.
773 $tIn: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium.Ghent:: IPBO, 2008. p. 106.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Acre. Para informações adicionais entre em contato com cpafac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
26/11/2009 |
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Data da última atualização: |
03/11/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ASSIS, G. M. L. de; VALENTIM, J. F. |
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Afiliação: |
GISELLE MARIANO LESSA DE ASSIS, CPAF-AC; JUDSON FERREIRA VALENTIM, CPAF-AC. |
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Título: |
Forage peanut breeding program in Brazil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL SOBRE MELHORAMENTO DE FORRAGEIRAS, 2., Campo Grande, MS. Anais... Campo Grande, MS: Embrapa Gado de Corte, 2009. |
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Páginas: |
17 p. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Amendoim forrageiro. |
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Thesagro: |
Pastagem. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 00520nam a2200145 a 4500
001 1576360
005 2023-11-03
008 2009 bl uuuu u00u1 u #d
100 1 $aASSIS, G. M. L. de
245 $aForage peanut breeding program in Brazil.$h[electronic resource]
260 $aIn: SIMPÓSIO INTERNACIONAL SOBRE MELHORAMENTO DE FORRAGEIRAS, 2., Campo Grande, MS. Anais... Campo Grande, MS: Embrapa Gado de Corte$c2009
300 $a17 p.$c1 CD-ROM.
650 $aPastagem
653 $aAmendoim forrageiro
700 1 $aVALENTIM, J. F.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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