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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
21/03/2017 |
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Data da última atualização: |
17/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
POERSCH-BORTOLON, L. B.; SCAGLIUSI, S. M. M.; YAMAZAKI-LAU, E.; BODANESE-ZANETTINI, M. H. |
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Afiliação: |
LIANE BALVEDI POERSCH-BORTOLON, UFRGS; SANDRA MARIA MANSUR SCAGLIUSI, CNPT; ELENE YAMAZAKI LAU, CNPT; MARIA HELENA BODANESE-ZANETTINI, UFRGS. |
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Título: |
Androgenic response of brazilian wheat genotypes to different pretreatments of spikes and to a gellinhg agent. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 11, p. 1839-1847, nov. 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to analyze the androgenic response of Brazilian wheat genotypes to different pretreatments of the spikes, prior to the culture of isolated microspores, and to the effect of a gelling agent in the induction culture medium. Five genotypes were evaluated for embryo formation, green plant regeneration, and spontaneous chromosome duplication. Wheat spikes were subjected to two pretreatments: cold, at 4°C for 21 days; and 2-hydroxynicotinic acid, at 32°C for two days. Culture media were evaluated with or without Ficoll as a gelling agent. Cold produced more embryos and green plants than the chemical pretreatment in four out of five genotypes. Only two genotypes treated with 2-hydroxynicotinic acid were able to produce plants, and one of them produced a single albino plant. Medium containing Ficoll produced more embryos than liquid medium and promoted a higher number of plants. Spontaneous chromosome duplication varies between genotypes and pretreatments, and shows high variability. |
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Palavras-Chave: |
Albinismo; Androgênese; Cultura de micrósporo isolado; Duplo-haploid; Isolated microspore culture; Recalcitrance; Recalcitrância. |
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Thesagro: |
Triticum Aestivum. |
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Thesaurus Nal: |
Albino; Androgenesis; Doubled haploids. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/152460/1/Androgenic-response-of-brazilian.pdf
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Marc: |
LEADER 01946naa a2200289 a 4500
001 2067419
005 2021-08-17
008 2016 bl uuuu u00u1 u #d
100 1 $aPOERSCH-BORTOLON, L. B.
245 $aAndrogenic response of brazilian wheat genotypes to different pretreatments of spikes and to a gellinhg agent.$h[electronic resource]
260 $c2016
520 $aThe objective of this work was to analyze the androgenic response of Brazilian wheat genotypes to different pretreatments of the spikes, prior to the culture of isolated microspores, and to the effect of a gelling agent in the induction culture medium. Five genotypes were evaluated for embryo formation, green plant regeneration, and spontaneous chromosome duplication. Wheat spikes were subjected to two pretreatments: cold, at 4°C for 21 days; and 2-hydroxynicotinic acid, at 32°C for two days. Culture media were evaluated with or without Ficoll as a gelling agent. Cold produced more embryos and green plants than the chemical pretreatment in four out of five genotypes. Only two genotypes treated with 2-hydroxynicotinic acid were able to produce plants, and one of them produced a single albino plant. Medium containing Ficoll produced more embryos than liquid medium and promoted a higher number of plants. Spontaneous chromosome duplication varies between genotypes and pretreatments, and shows high variability.
650 $aAlbino
650 $aAndrogenesis
650 $aDoubled haploids
650 $aTriticum Aestivum
653 $aAlbinismo
653 $aAndrogênese
653 $aCultura de micrósporo isolado
653 $aDuplo-haploid
653 $aIsolated microspore culture
653 $aRecalcitrance
653 $aRecalcitrância
700 1 $aSCAGLIUSI, S. M. M.
700 1 $aYAMAZAKI-LAU, E.
700 1 $aBODANESE-ZANETTINI, M. H.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 51, n. 11, p. 1839-1847, nov. 2016.
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Registro original: |
Embrapa Trigo (CNPT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
03/12/2015 |
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Data da última atualização: |
04/12/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
VIEIRA, F. de A.; NOVAES, R. M. L.; FAJARDO, C. G.; SANTOS, R. M. dos; ALMEIDA, H. de S.; CARVALHO, D. de; LOVATO, M. B. |
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Afiliação: |
FABIO DE ALMEIDA VIEIRA, UFRN; RENAN MILAGRES LAGE NOVAES, CNPMA; CRISTIANE GOUVEA FAJARDO, UFRN; RUBENS MANOEL DOS SANTOS, UFLA; HISAIS DE SOUZA ALMEIDA, UFLA; DULCINEIA DE CARVALHO, UFLA; MARIA BERNADETE LOVATO, UFMG. |
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Título: |
Holocene southward expansion in seasonally dry tropical forests in South America: phylogeography of Ficus bonijesulapensis (Moraceae). |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Botanical Journal of the Linnean Society, London, v. 177, n. 2, p. 189-201, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
We conducted a phylogeographical and niche modelling study of the tree Ficus bonijesulapensis, endemic to Brazilian seasonally dry tropical forests (SDTFs), in order to evaluate the effects of Quaternary climatic fluctuations on population dynamics. The trnQ?5?rps16 region of plastid DNA was sequenced from 15 populations. Three phylogeographical groups were identified by the median-joining algorithm network and spatial analysis of molecular variance (SAMOVA) (FCT = 0.591): a central-west, a central-east and a scattered group. The central groups had higher total haplotype and nucleotide diversities than the scattered group. Ecological niche modelling suggested that, since the Last Interglacial (130 kyr BP), the central and north regions have been relatively stable, whereas the southern region of the species distribution has been less stable. The phylogeographical groups showed concordance with the floristic units described for SDTFs. The low genetic diversity, unimodal mismatch distribution and unfavourable climatic conditions in the southern region suggest a recent southward expansion of the range of the species during the Holocene, supporting the hypothesis of the southward expansion of SDTFs during this period. The central and northern regions of the current distribution of F. bonijesulapensis, which are consistent with arboreal caatinga and rock outcrop floristic units, were potential refugia during Quaternary climatic fluctuations. |
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Palavras-Chave: |
Ficus bonijesulapensis; Fig tree; Filogeografia; Habitat stability; Limestone outcrops; Quaternary history. |
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Thesagro: |
Árvore; Caatinga; População de planta. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02403naa a2200301 a 4500
001 2030584
005 2015-12-04
008 2015 bl uuuu u00u1 u #d
100 1 $aVIEIRA, F. de A.
245 $aHolocene southward expansion in seasonally dry tropical forests in South America$bphylogeography of Ficus bonijesulapensis (Moraceae).$h[electronic resource]
260 $c2015
520 $aWe conducted a phylogeographical and niche modelling study of the tree Ficus bonijesulapensis, endemic to Brazilian seasonally dry tropical forests (SDTFs), in order to evaluate the effects of Quaternary climatic fluctuations on population dynamics. The trnQ?5?rps16 region of plastid DNA was sequenced from 15 populations. Three phylogeographical groups were identified by the median-joining algorithm network and spatial analysis of molecular variance (SAMOVA) (FCT = 0.591): a central-west, a central-east and a scattered group. The central groups had higher total haplotype and nucleotide diversities than the scattered group. Ecological niche modelling suggested that, since the Last Interglacial (130 kyr BP), the central and north regions have been relatively stable, whereas the southern region of the species distribution has been less stable. The phylogeographical groups showed concordance with the floristic units described for SDTFs. The low genetic diversity, unimodal mismatch distribution and unfavourable climatic conditions in the southern region suggest a recent southward expansion of the range of the species during the Holocene, supporting the hypothesis of the southward expansion of SDTFs during this period. The central and northern regions of the current distribution of F. bonijesulapensis, which are consistent with arboreal caatinga and rock outcrop floristic units, were potential refugia during Quaternary climatic fluctuations.
650 $aÁrvore
650 $aCaatinga
650 $aPopulação de planta
653 $aFicus bonijesulapensis
653 $aFig tree
653 $aFilogeografia
653 $aHabitat stability
653 $aLimestone outcrops
653 $aQuaternary history
700 1 $aNOVAES, R. M. L.
700 1 $aFAJARDO, C. G.
700 1 $aSANTOS, R. M. dos
700 1 $aALMEIDA, H. de S.
700 1 $aCARVALHO, D. de
700 1 $aLOVATO, M. B.
773 $tBotanical Journal of the Linnean Society, London$gv. 177, n. 2, p. 189-201, 2015.
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