|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Café. |
Data corrente: |
27/03/2023 |
Data da última atualização: |
12/04/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ANGELO, P. C. da S.; PEREIRA, L. F. P.; SERA, G. H.; SETA, T. |
Afiliação: |
PAULA CRISTINA DA SILVA ANGELO, CNPCa; L. F. P. PEREIRA, IDR - PARANÁ; G. H. SERA, IDR - PARANÁ; T. SERA, IDR - PARANÁ. |
Título: |
Coffee microspore cultivation to attain doubled-haploid plantlets. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Acta Horticulturae, v. 31, n. 1359, p. 123-130, 2023. |
DOI: |
10.17660/ActaHortic.2023.1359.14 |
Idioma: |
Inglês |
Notas: |
Apresentado no INTERNATIONAL HORTICULTURAL CONGRESS, 31., 2022, Angers, França. |
Conteúdo: |
Introgression of disease resistance from related Coffea species to C. arabica has been done by inter-specific hybridization. C. arabica (tetraploid) × C. racemosa (diploid) hybrids were obtained at the IDR-Paraná, Brazil. Some of the hybrids display impaired self-pollination, despite backcrossed to C. arabica. As an attempt to regenerate stable doubled-haploid plants, anthers and isolated microspores have been cultivated in vitro. It was considered that chromosomes captured in a microspore following meiosis could acquire homo and/or homeologous stability faster in vitro than in vivo. A C. arabica progeny was taken as control. Flowers were collected at the IDR campus in Londrina, when young microspores were uninucleate, and treated with 8% active chlorine. Microspores were extracted in 90 mM mannitol using a food mixer set to function for a few seconds, washed and centrifuged at 100× g twice, and cultivated in modified N6 liquid medium (105 cells mL-1 in 35 mm diameter plates). Anthers were excised using scalpels and cultivated in solid medium. Explants were kept for six months of continuous cultivation on that induction medium containing 6.5 mg L-1 auxins, 1.0 mg L-1 cytokinins and 0.5 mg L-1 gibberellin (GA3), at 27°C under dark. Microspores produced embryo-like structures or microcalli in very low frequencies (0.3 per plate). Anthers, on the other hand, produced embryogenic calli. Colonization by an invariant morphotype of fungus took away 70% of Arabica coffee control anthers and 5% of the asseptic anthers produced friable calli, some embryogenic but arrested when compared with calli produced by the inter-specific hybrid anthers. Colonization by an invariant morphotype of bacteria took away 25% of hybrid anthers and 8% of produced embryogenic tissue, with globular embryos simultaneously multiplying and maturing upon transfer to N6 medium. Embryo conversion and photomorphogenesis under light on auxin/cytokinin ratio = 2 plus GA3 are going on, 1.2 year after inoculation. MenosIntrogression of disease resistance from related Coffea species to C. arabica has been done by inter-specific hybridization. C. arabica (tetraploid) × C. racemosa (diploid) hybrids were obtained at the IDR-Paraná, Brazil. Some of the hybrids display impaired self-pollination, despite backcrossed to C. arabica. As an attempt to regenerate stable doubled-haploid plants, anthers and isolated microspores have been cultivated in vitro. It was considered that chromosomes captured in a microspore following meiosis could acquire homo and/or homeologous stability faster in vitro than in vivo. A C. arabica progeny was taken as control. Flowers were collected at the IDR campus in Londrina, when young microspores were uninucleate, and treated with 8% active chlorine. Microspores were extracted in 90 mM mannitol using a food mixer set to function for a few seconds, washed and centrifuged at 100× g twice, and cultivated in modified N6 liquid medium (105 cells mL-1 in 35 mm diameter plates). Anthers were excised using scalpels and cultivated in solid medium. Explants were kept for six months of continuous cultivation on that induction medium containing 6.5 mg L-1 auxins, 1.0 mg L-1 cytokinins and 0.5 mg L-1 gibberellin (GA3), at 27°C under dark. Microspores produced embryo-like structures or microcalli in very low frequencies (0.3 per plate). Anthers, on the other hand, produced embryogenic calli. Colonization by an invariant morphotype of fungus took away 70% of Arabica coffee control ant... Mostrar Tudo |
Thesagro: |
Embriogénese; Pólen; Rubiaceae. |
Thesaurus Nal: |
Embryogenesis; Pollen. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02752naa a2200241 a 4500 001 2152776 005 2023-04-12 008 2023 bl uuuu u00u1 u #d 024 7 $a10.17660/ActaHortic.2023.1359.14$2DOI 100 1 $aANGELO, P. C. da S. 245 $aCoffee microspore cultivation to attain doubled-haploid plantlets.$h[electronic resource] 260 $c2023 500 $aApresentado no INTERNATIONAL HORTICULTURAL CONGRESS, 31., 2022, Angers, França. 520 $aIntrogression of disease resistance from related Coffea species to C. arabica has been done by inter-specific hybridization. C. arabica (tetraploid) × C. racemosa (diploid) hybrids were obtained at the IDR-Paraná, Brazil. Some of the hybrids display impaired self-pollination, despite backcrossed to C. arabica. As an attempt to regenerate stable doubled-haploid plants, anthers and isolated microspores have been cultivated in vitro. It was considered that chromosomes captured in a microspore following meiosis could acquire homo and/or homeologous stability faster in vitro than in vivo. A C. arabica progeny was taken as control. Flowers were collected at the IDR campus in Londrina, when young microspores were uninucleate, and treated with 8% active chlorine. Microspores were extracted in 90 mM mannitol using a food mixer set to function for a few seconds, washed and centrifuged at 100× g twice, and cultivated in modified N6 liquid medium (105 cells mL-1 in 35 mm diameter plates). Anthers were excised using scalpels and cultivated in solid medium. Explants were kept for six months of continuous cultivation on that induction medium containing 6.5 mg L-1 auxins, 1.0 mg L-1 cytokinins and 0.5 mg L-1 gibberellin (GA3), at 27°C under dark. Microspores produced embryo-like structures or microcalli in very low frequencies (0.3 per plate). Anthers, on the other hand, produced embryogenic calli. Colonization by an invariant morphotype of fungus took away 70% of Arabica coffee control anthers and 5% of the asseptic anthers produced friable calli, some embryogenic but arrested when compared with calli produced by the inter-specific hybrid anthers. Colonization by an invariant morphotype of bacteria took away 25% of hybrid anthers and 8% of produced embryogenic tissue, with globular embryos simultaneously multiplying and maturing upon transfer to N6 medium. Embryo conversion and photomorphogenesis under light on auxin/cytokinin ratio = 2 plus GA3 are going on, 1.2 year after inoculation. 650 $aEmbryogenesis 650 $aPollen 650 $aEmbriogénese 650 $aPólen 650 $aRubiaceae 700 1 $aPEREIRA, L. F. P. 700 1 $aSERA, G. H. 700 1 $aSETA, T. 773 $tActa Horticulturae$gv. 31, n. 1359, p. 123-130, 2023.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Café (CNPCa) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
04/10/2016 |
Data da última atualização: |
19/12/2016 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
CARAFFA, M.; RIFFEL, C. R.; MACHADO, J. R. de A.; CARNEIRO, E. A.; ZAWACKI, M. E.; TAMIOZZO, F. |
Afiliação: |
MARCOS CARAFFA, SETREM, Tres de Maio, RS.; CINEI TERESINHA RIFFEL, SETREM, Tres de Maio, RS.; JANE RODRIGUES DE ASSIS MACHADO, CNPMS; EMERSON ANTUNES CARNEIRO, SETREM, Tres de Maio, RS.; MARLON EDUARDO ZAWACKI, SETREM, Tres de Maio, RS.; FELIPE TAMIOZZO, SETREM, Tres de Maio, RS. |
Título: |
Avaliação de adaptabilidade de milhos de polinização aberta, Independência, RS, 2015/16. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 31., 2016, Bento Gonçalves. Milho e sorgo: inovações, mercados e segurança alimentar: anais. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2016. |
Idioma: |
Português |
Thesagro: |
Grão; Rendimento; Variedade; Zea mays. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/148327/1/Avaliacao-adaptabilidade.pdf
|
Marc: |
LEADER 00756nam a2200205 a 4500 001 2054077 005 2016-12-19 008 2016 bl uuuu u00u1 u #d 100 1 $aCARAFFA, M. 245 $aAvaliação de adaptabilidade de milhos de polinização aberta, Independência, RS, 2015/16.$h[electronic resource] 260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 31., 2016, Bento Gonçalves. Milho e sorgo: inovações, mercados e segurança alimentar: anais. Sete Lagoas: Associação Brasileira de Milho e Sorgo$c2016 650 $aGrão 650 $aRendimento 650 $aVariedade 650 $aZea mays 700 1 $aRIFFEL, C. R. 700 1 $aMACHADO, J. R. de A. 700 1 $aCARNEIRO, E. A. 700 1 $aZAWACKI, M. E. 700 1 $aTAMIOZZO, F.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|