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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
12/05/2020 |
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Data da última atualização: |
25/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; OLIVEIRA, S. A. S. de; OTTO, C.; ALICAI, T.; FREITAS, J. P. X. de; CORTES, D. F. M.; PARIYO, A.; LIRI, C.; ADIGA, G.; BALMER, A.; ROBINSON, M. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; CAROLINE OTTO, Syngenta Foundation for Sustainable Agriculture; TITUS ALICAI, NaCRRI; JUAN PAULO XAVIER DE FREITAS; DIEGO FERNANDO MARMOLEJO CORTES; ANTHONY PARIYO; CHARLES LIRI, NaCRRI; GERALD ADIGA, NaCRRI; ANDREA BALMER, Syngenta Foundation for Sustainable Agriculture; MIKE ROBINSON, Syngenta Foundation for Sustainable Agriculture. |
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Título: |
A novel seed treatment-based multiplication approach for cassava planting material. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Plos One, v.15, n.3, e0229943, March, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava (Manihot esculenta Crantz) is an important food security crop in many parts of the developing world. The crop?s high yield potential and multitude of uses?both for nutrition and processing?render cassava a promising driver for the development of rural value chains. It is traditionally propagated from stem cuttings of up to 30 cm in length, giving a multiplication rate as low as 1:10. Propagating cassava traditionally is very inefficient, which leads to challenges in the production and distribution of quality planting material and improved cultivars, greatly limiting the impact of investments in crop breeding. The work described in the present study aimed to develop a seed treatment approach to facilitate the use of shorter seed pieces, increasing the multiplication rate of cassava and thus making the crop?s seed systems more efficient. After several tests, formulation was identified, consisting of thiamethoxam 21 g ha-1, mefenoxam 1.0 g ha-1, fludioxonil 1.3 g ha-1, thiabendazole 7.5 g ha-1 and Latex 2% as a binder. Plant growing from seed pieces treated with this formulation displayed increased crop establishment and early crop vigor, leading to an improved productivity throughout a full growing cycle. This allowed to reduce the cassava seed piece size to 8 cm with no negative effects on germination and crop establishment, leading to yields comparable to those from untreated 16 cm pieces. This, in turn, will allow to increase the multiplication ratio of cassava by a factor of up to 3. Notably, this was possible under regular field conditions and independently of any specialised treatment facilities. Compared with existing seed production protocols, the increased multiplication rates allowed for efficiency gains of between 1 to 1.9 years compared to conventional five-year cycles. We believe that the technology described here holds considerable promise for developing more reliable and remunerative delivery channels for quality cassava planting material and improved genetics. MenosCassava (Manihot esculenta Crantz) is an important food security crop in many parts of the developing world. The crop?s high yield potential and multitude of uses?both for nutrition and processing?render cassava a promising driver for the development of rural value chains. It is traditionally propagated from stem cuttings of up to 30 cm in length, giving a multiplication rate as low as 1:10. Propagating cassava traditionally is very inefficient, which leads to challenges in the production and distribution of quality planting material and improved cultivars, greatly limiting the impact of investments in crop breeding. The work described in the present study aimed to develop a seed treatment approach to facilitate the use of shorter seed pieces, increasing the multiplication rate of cassava and thus making the crop?s seed systems more efficient. After several tests, formulation was identified, consisting of thiamethoxam 21 g ha-1, mefenoxam 1.0 g ha-1, fludioxonil 1.3 g ha-1, thiabendazole 7.5 g ha-1 and Latex 2% as a binder. Plant growing from seed pieces treated with this formulation displayed increased crop establishment and early crop vigor, leading to an improved productivity throughout a full growing cycle. This allowed to reduce the cassava seed piece size to 8 cm with no negative effects on germination and crop establishment, leading to yields comparable to those from untreated 16 cm pieces. This, in turn, will allow to increase the multiplication ratio of cassava by a... 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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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/212900/1/Oliveira-et-al-PlosOne-2020.pdf
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Marc: |
LEADER 02737naa a2200265 a 4500
001 2122236
005 2021-01-25
008 2020 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, E. J. de
245 $aA novel seed treatment-based multiplication approach for cassava planting material.$h[electronic resource]
260 $c2020
520 $aCassava (Manihot esculenta Crantz) is an important food security crop in many parts of the developing world. The crop?s high yield potential and multitude of uses?both for nutrition and processing?render cassava a promising driver for the development of rural value chains. It is traditionally propagated from stem cuttings of up to 30 cm in length, giving a multiplication rate as low as 1:10. Propagating cassava traditionally is very inefficient, which leads to challenges in the production and distribution of quality planting material and improved cultivars, greatly limiting the impact of investments in crop breeding. The work described in the present study aimed to develop a seed treatment approach to facilitate the use of shorter seed pieces, increasing the multiplication rate of cassava and thus making the crop?s seed systems more efficient. After several tests, formulation was identified, consisting of thiamethoxam 21 g ha-1, mefenoxam 1.0 g ha-1, fludioxonil 1.3 g ha-1, thiabendazole 7.5 g ha-1 and Latex 2% as a binder. Plant growing from seed pieces treated with this formulation displayed increased crop establishment and early crop vigor, leading to an improved productivity throughout a full growing cycle. This allowed to reduce the cassava seed piece size to 8 cm with no negative effects on germination and crop establishment, leading to yields comparable to those from untreated 16 cm pieces. This, in turn, will allow to increase the multiplication ratio of cassava by a factor of up to 3. Notably, this was possible under regular field conditions and independently of any specialised treatment facilities. Compared with existing seed production protocols, the increased multiplication rates allowed for efficiency gains of between 1 to 1.9 years compared to conventional five-year cycles. We believe that the technology described here holds considerable promise for developing more reliable and remunerative delivery channels for quality cassava planting material and improved genetics.
650 $aCassava
650 $aMandioca
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aOTTO, C.
700 1 $aALICAI, T.
700 1 $aFREITAS, J. P. X. de
700 1 $aCORTES, D. F. M.
700 1 $aPARIYO, A.
700 1 $aLIRI, C.
700 1 $aADIGA, G.
700 1 $aBALMER, A.
700 1 $aROBINSON, M.
773 $tPlos One$gv.15, n.3, e0229943, March, 2020.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
11/11/2011 |
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Data da última atualização: |
30/08/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, R. C. B. da; PIMENTA FILHO, E. C.; RIBEIRO, M. N.; SILVA, E. C. da; FACO, O.; PAIVA, S. R. |
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Afiliação: |
REGINA CELY BENÍCIO DA SILVA, Pós-graduanda, UFPB/Areia, PB.; EDGARD CAVALCANTI PIMENTA FILHO, PDIZ/UFPB - Areia, PB; MARIA NORMA RIBEIRO, UFRPE - Recife, PE.; ELIZABETE CRISTINA DA SILVA, Pós-graduanda, UnB - Brasília, DF; OLIVARDO FACO, CNPC; SAMUEL REZENDE PAIVA, CENARGEN. |
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Título: |
Diversidade genética de ovinos Morada Nova no estado do Ceará, Brasil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 48., 2011, Belém. O desenvolvimento da produção animal e a responsabilidade frente a novos desafios: anais. Belém: SBZ, 2011. 3 f. 1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Resumo: O objetivo deste trabalho foi determinar a diversidade genética de treze populações da raça Morada Nova no estado do Ceará (N=183), utilizando 17 locos de microssatélites. A heterozigosidade média observada foi de 0,52 e o conteúdo de informação polimórfica de 0,47. A endogamia média obtida (FIS) foi de 0,014 e o índice de fixação entre populacões (FST) foi de 0,064 (p<0,00001). Os resultados obtidos sugerem que a raça Morada Nova no estado do Ceará apresenta um coeficiente de endogamia relativamente baixo e que a diversidade genética existente pode estar subestruturada. Tais resultados fornecerão subsídios para os atuais programas de Melhoramento e Conservação em execução no Estado do Ceará. [Genetic diversity of Morada Nova sheep in Ceará - Brazil]. Abstract: The objective of this work was to determine the genetic diversity of thirteen populations of Morada Nova in Ceará (N=183), using 17 microsatellite loci. The observed mean heterozigosity was 0.52 and the polymorphic information content was 0.47. The mean inbreeding (FIS) was 0.014 and the fixation index between populations (FST) was 0.064 (p <0.00001). The results suggest that Morada Nova in Ceará State has a relatively low inbreeding and there is evidence for genetic structure from the analyzed populations. These results will provide subsidy for current programs of Breeding and Conservation in Ceará State. |
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Palavras-Chave: |
Conservation genetics; Microsatellites; Microssatélite; Onservação genética. |
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Thesagro: |
Genética Animal; Ovino; Recurso Genético; Variação Genética. |
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Thesaurus NAL: |
Animal genetic resources; Brazil; Genetic variation; Goats. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/46377/1/AAC-Diversidade-genetica.pdf
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Marc: |
LEADER 02478nam a2200313 a 4500
001 1905815
005 2021-08-30
008 2011 bl uuuu u00u1 u #d
100 1 $aSILVA, R. C. B. da
245 $aDiversidade genética de ovinos Morada Nova no estado do Ceará, Brasil.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 48., 2011, Belém. O desenvolvimento da produção animal e a responsabilidade frente a novos desafios: anais. Belém: SBZ, 2011. 3 f. 1 CD-ROM.$c2011
520 $aResumo: O objetivo deste trabalho foi determinar a diversidade genética de treze populações da raça Morada Nova no estado do Ceará (N=183), utilizando 17 locos de microssatélites. A heterozigosidade média observada foi de 0,52 e o conteúdo de informação polimórfica de 0,47. A endogamia média obtida (FIS) foi de 0,014 e o índice de fixação entre populacões (FST) foi de 0,064 (p<0,00001). Os resultados obtidos sugerem que a raça Morada Nova no estado do Ceará apresenta um coeficiente de endogamia relativamente baixo e que a diversidade genética existente pode estar subestruturada. Tais resultados fornecerão subsídios para os atuais programas de Melhoramento e Conservação em execução no Estado do Ceará. [Genetic diversity of Morada Nova sheep in Ceará - Brazil]. Abstract: The objective of this work was to determine the genetic diversity of thirteen populations of Morada Nova in Ceará (N=183), using 17 microsatellite loci. The observed mean heterozigosity was 0.52 and the polymorphic information content was 0.47. The mean inbreeding (FIS) was 0.014 and the fixation index between populations (FST) was 0.064 (p <0.00001). The results suggest that Morada Nova in Ceará State has a relatively low inbreeding and there is evidence for genetic structure from the analyzed populations. These results will provide subsidy for current programs of Breeding and Conservation in Ceará State.
650 $aAnimal genetic resources
650 $aBrazil
650 $aGenetic variation
650 $aGoats
650 $aGenética Animal
650 $aOvino
650 $aRecurso Genético
650 $aVariação Genética
653 $aConservation genetics
653 $aMicrosatellites
653 $aMicrossatélite
653 $aOnservação genética
700 1 $aPIMENTA FILHO, E. C.
700 1 $aRIBEIRO, M. N.
700 1 $aSILVA, E. C. da
700 1 $aFACO, O.
700 1 $aPAIVA, S. R.
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Embrapa Caprinos e Ovinos (CNPC) |
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