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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agroenergia; Embrapa Uva e Vinho. |
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Data corrente: |
10/12/2021 |
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Data da última atualização: |
10/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LAVIOLA, B. G.; SANTOS, A. dos; RODRIGUES, E. V.; TEODORO, L. P. R.; TEODORO, P. E.; ROSADO, T. B.; GUIMARÃES, C. G.; CONCEIÇÃO, L. D. H. C. S. DA. |
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Afiliação: |
BRUNO GALVEAS LAVIOLA, CNPAE; ADRIANO DOS SANTOS, A&E Statistical Analysis and Consulting; ERINA VITÓRIO RODRIGUES, Universidade de Brasília; LARISSA PEREIRA RIBEIRO TEODORO, Universidade Federal do Mato Grosso do Sul; PAULO EDUARDO TEODORO, Universidade Federal do Mato Grosso do Sul; TATIANA BARBOSA ROSADO, Universidade de Brasília; CINTIA GONÇALVES GUIMARÃES, Universidade Federal dos Vales do Jequitinhonha e Mucuri; LEO DUC HAA CARSON SCHWARTZHAUPT DA, CNPUV. |
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Título: |
Structure and genetic diversity of macauba [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] approached by SNP markers to assist breeding strategies. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Genetic Resources and Crop Evolution, v. 69, p. 1179-1191, Nov. 2021. |
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Páginas: |
13 p. |
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Descrição Física: |
PDF: il. color. |
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DOI: |
https://doi.org/10.1007/s10722-021-01295-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Macauba palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] is a perennial oil, it stands out for having several characteristics of commercial interest, mainly for producing oil for biodiesel, it has high oil productivity, about 2.5 to 4.5 L·year-1. Despite its great potential, o its cultivation is carried out mainly in an extractive way, so the domestication and breeding programs has been incipient. The study hypothesis is that macauba populations collected in different locations have sufficient genetic variability to initiate a breeding program. Thus, the aim of this study was to estimate the genetic diversity and population structure of macauba palm genotypes by using single nucleotide polymorphism (SNP) markers in order to reveal genetic diversity and distribution of genetic variation within and between populations and use the genetic information obtained to assist breeding strategies. Leaf tissues were collected from 566 macauba plants belonging to the Embrapa Cerrados Active Germplasm Bank, composed of genotypes from five states in Brazil: Minas Gerais, Goiás, Pará, São Paulo, and Distrito Federal. Molecular variance analysis estimated, the genetic diversity parameters, the population structure and principal coordinate analysis. The genetic diversity is higher within than between populations. The results provided by PCoA and STRUCTURE were in agreement and indicated that the evaluated genotypes can be grouped into two groups. Genetic diversity parameters reveal the presence of inbreeding and a low number of heterozygotes, evidencing that the reproduction system of the species is mixed. The information revealed of the genotypes using SNP markers will be important for future studies using genome-wide selection and genomic association to develop cultivars of macauba with desirable traits, such as high yield of fruits and oil production. MenosAbstract: Macauba palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] is a perennial oil, it stands out for having several characteristics of commercial interest, mainly for producing oil for biodiesel, it has high oil productivity, about 2.5 to 4.5 L·year-1. Despite its great potential, o its cultivation is carried out mainly in an extractive way, so the domestication and breeding programs has been incipient. The study hypothesis is that macauba populations collected in different locations have sufficient genetic variability to initiate a breeding program. Thus, the aim of this study was to estimate the genetic diversity and population structure of macauba palm genotypes by using single nucleotide polymorphism (SNP) markers in order to reveal genetic diversity and distribution of genetic variation within and between populations and use the genetic information obtained to assist breeding strategies. Leaf tissues were collected from 566 macauba plants belonging to the Embrapa Cerrados Active Germplasm Bank, composed of genotypes from five states in Brazil: Minas Gerais, Goiás, Pará, São Paulo, and Distrito Federal. Molecular variance analysis estimated, the genetic diversity parameters, the population structure and principal coordinate analysis. The genetic diversity is higher within than between populations. The results provided by PCoA and STRUCTURE were in agreement and indicated that the evaluated genotypes can be grouped into two groups. Genetic diversity parameters reveal ... Mostrar Tudo |
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Palavras-Chave: |
Banco de Germoplasma da Embrapa Cerrados; Breeding programs; Genetic diversity. |
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Thesagro: |
Macaúba. |
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Thesaurus Nal: |
Acrocomia; Bioenergy; Genetic variation; Genotyping; Plant breeding; Single nucleotide polymorphism. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 03026naa a2200349 a 4500
001 2137551
005 2023-02-10
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10722-021-01295-1$2DOI
100 1 $aLAVIOLA, B. G.
245 $aStructure and genetic diversity of macauba [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] approached by SNP markers to assist breeding strategies.$h[electronic resource]
260 $c2021
300 $a13 p.$cPDF: il. color.
520 $aAbstract: Macauba palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] is a perennial oil, it stands out for having several characteristics of commercial interest, mainly for producing oil for biodiesel, it has high oil productivity, about 2.5 to 4.5 L·year-1. Despite its great potential, o its cultivation is carried out mainly in an extractive way, so the domestication and breeding programs has been incipient. The study hypothesis is that macauba populations collected in different locations have sufficient genetic variability to initiate a breeding program. Thus, the aim of this study was to estimate the genetic diversity and population structure of macauba palm genotypes by using single nucleotide polymorphism (SNP) markers in order to reveal genetic diversity and distribution of genetic variation within and between populations and use the genetic information obtained to assist breeding strategies. Leaf tissues were collected from 566 macauba plants belonging to the Embrapa Cerrados Active Germplasm Bank, composed of genotypes from five states in Brazil: Minas Gerais, Goiás, Pará, São Paulo, and Distrito Federal. Molecular variance analysis estimated, the genetic diversity parameters, the population structure and principal coordinate analysis. The genetic diversity is higher within than between populations. The results provided by PCoA and STRUCTURE were in agreement and indicated that the evaluated genotypes can be grouped into two groups. Genetic diversity parameters reveal the presence of inbreeding and a low number of heterozygotes, evidencing that the reproduction system of the species is mixed. The information revealed of the genotypes using SNP markers will be important for future studies using genome-wide selection and genomic association to develop cultivars of macauba with desirable traits, such as high yield of fruits and oil production.
650 $aAcrocomia
650 $aBioenergy
650 $aGenetic variation
650 $aGenotyping
650 $aPlant breeding
650 $aSingle nucleotide polymorphism
650 $aMacaúba
653 $aBanco de Germoplasma da Embrapa Cerrados
653 $aBreeding programs
653 $aGenetic diversity
700 1 $aSANTOS, A. dos
700 1 $aRODRIGUES, E. V.
700 1 $aTEODORO, L. P. R.
700 1 $aTEODORO, P. E.
700 1 $aROSADO, T. B.
700 1 $aGUIMARÃES, C. G.
700 1 $aCONCEIÇÃO, L. D. H. C. S. DA
773 $tGenetic Resources and Crop Evolution$gv. 69, p. 1179-1191, Nov. 2021.
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Registro original: |
Embrapa Uva e Vinho (CNPUV) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
10/07/2009 |
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Data da última atualização: |
20/07/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENDES-BONATO, A. B.; PAGLIARINI, M. S.; VALLE, C. B. do; JANK, L. |
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Afiliação: |
ANDRÉA BEATRIZ MENDES -BONATO, UNIVERSIDADE ESTADUAL DE MARINGÁ; MARIA SUELY PAGLIARINI, UNIVERSIDADE ESTADUAL DE MARINGÁ; CACILDA BORGES DO VALLE, CNPGC; LIANA JANK, CNPGC. |
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Título: |
Abnormal pollen mitoses (PM I and PM II) in an interspecific hybrid of Brachiaria ruziziensis and Brachiaria decumbens (Gramineae). |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Journal of Genetics, Bangalore, v. 83, n. 3, p. 279-283, Dec. 2004. |
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Idioma: |
Inglês |
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Notas: |
Research note. |
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Conteúdo: |
Microgametogenesis was analysed in an interspecific hybrid resulting from a cross between an artificially tetraploidized sexual accession of Brachiaria ruziziensis (2n = 4x = 36) and the apomictic cultivar (cv. Basilisk) of B. decumbens (2n = 4x = 36). Although each microspore initiated its differentiation by pollen mitosis, polarization of the nucleus was not observed in 28.85% of the microspores, and the typical hemispherical cell plate was not detected as well. The usual asymmetry was not seen at first pollen mitosis (PM I), and microspores therefore lacked differentiation between the vegetative and the generative cell. After telophase, each cell entered PM II, but this was not always followed by cytokinesis. Tripolar spindle and restitutional nuclei were observed among microspores that lacked the first cytokinesis. Pollen from such abnormal divisions were sterile and larger than those resulting from the normal ones. Male gametogenesis in flowering plants depends on a determinative asymmetry in the cell division at pollen mitosis I (PM I), which gives rise to a larger vegetative cell and a smaller generative cell. To achieve this asymmetry, the microspore undergoes several unique cellular events, including the establishment of cell polarity through nuclear migration, development of an asymmetric mitotic spindle, and an expected process of cytokinesis to form a hemispherical cell plate. Control of gametophytic cytokinesis is, therefore, a critical process in pollen cell fate determination which results in the asymmetric distribution of cellular components that presumably include cell fate determinants (Twell et al. 1998; Park and Twell 2001). During cell division in somatic cells, a pre-prophase band of microtubules marks the future division plane and the exact site of cytokinesis, and the cell plate arises from the phragmoplast and grows toward the cell wall (Sylvester 2000). On the other hand, in gametophytic cytokinesis at PM I the pre-prophase band is absent and a unique hemispherical cell plate is formed and surrounds the generative nucleus (Terasaka and Niitsu 1990). Asymmetric cytoplasm cleavage is ensured by a curved profile of phragmoplast microtubules that appear to guide the centrifugal growth of the cell plate from its margin (Brown and Lemmon 1991). Mutations altering cell division asymmetry during pollen mitosis have been reported in Arabidopsis thaliana (Park et al. 1998) and B. decumbens (Junqueira Filho et al. 2003). This paper reports a new occurrence of symmetry in pollen mitoses (PM I and PM II) in a hybrid involving B. decumbens as the male genitor. Absence of cytokinesis following PM I and PM II was also observed. MenosMicrogametogenesis was analysed in an interspecific hybrid resulting from a cross between an artificially tetraploidized sexual accession of Brachiaria ruziziensis (2n = 4x = 36) and the apomictic cultivar (cv. Basilisk) of B. decumbens (2n = 4x = 36). Although each microspore initiated its differentiation by pollen mitosis, polarization of the nucleus was not observed in 28.85% of the microspores, and the typical hemispherical cell plate was not detected as well. The usual asymmetry was not seen at first pollen mitosis (PM I), and microspores therefore lacked differentiation between the vegetative and the generative cell. After telophase, each cell entered PM II, but this was not always followed by cytokinesis. Tripolar spindle and restitutional nuclei were observed among microspores that lacked the first cytokinesis. Pollen from such abnormal divisions were sterile and larger than those resulting from the normal ones. Male gametogenesis in flowering plants depends on a determinative asymmetry in the cell division at pollen mitosis I (PM I), which gives rise to a larger vegetative cell and a smaller generative cell. To achieve this asymmetry, the microspore undergoes several unique cellular events, including the establishment of cell polarity through nuclear migration, development of an asymmetric mitotic spindle, and an expected process of cytokinesis to form a hemispherical cell plate. Control of gametophytic cytokinesis is, therefore, a critical process in pollen cell fa... Mostrar Tudo |
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Palavras-Chave: |
Braquiária. |
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Thesagro: |
Brachiaria Decumbens; Brachiaria Ruziziensis; Gramínea Forrageira; Melhoramento Genético Vegetal; Mitose; Pastagem. |
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Thesaurus NAL: |
Pollen. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03495naa a2200265 a 4500
001 1327022
005 2023-07-20
008 2004 bl uuuu u00u1 u #d
100 1 $aMENDES-BONATO, A. B.
245 $aAbnormal pollen mitoses (PM I and PM II) in an interspecific hybrid of Brachiaria ruziziensis and Brachiaria decumbens (Gramineae).
260 $c2004
500 $aResearch note.
520 $aMicrogametogenesis was analysed in an interspecific hybrid resulting from a cross between an artificially tetraploidized sexual accession of Brachiaria ruziziensis (2n = 4x = 36) and the apomictic cultivar (cv. Basilisk) of B. decumbens (2n = 4x = 36). Although each microspore initiated its differentiation by pollen mitosis, polarization of the nucleus was not observed in 28.85% of the microspores, and the typical hemispherical cell plate was not detected as well. The usual asymmetry was not seen at first pollen mitosis (PM I), and microspores therefore lacked differentiation between the vegetative and the generative cell. After telophase, each cell entered PM II, but this was not always followed by cytokinesis. Tripolar spindle and restitutional nuclei were observed among microspores that lacked the first cytokinesis. Pollen from such abnormal divisions were sterile and larger than those resulting from the normal ones. Male gametogenesis in flowering plants depends on a determinative asymmetry in the cell division at pollen mitosis I (PM I), which gives rise to a larger vegetative cell and a smaller generative cell. To achieve this asymmetry, the microspore undergoes several unique cellular events, including the establishment of cell polarity through nuclear migration, development of an asymmetric mitotic spindle, and an expected process of cytokinesis to form a hemispherical cell plate. Control of gametophytic cytokinesis is, therefore, a critical process in pollen cell fate determination which results in the asymmetric distribution of cellular components that presumably include cell fate determinants (Twell et al. 1998; Park and Twell 2001). During cell division in somatic cells, a pre-prophase band of microtubules marks the future division plane and the exact site of cytokinesis, and the cell plate arises from the phragmoplast and grows toward the cell wall (Sylvester 2000). On the other hand, in gametophytic cytokinesis at PM I the pre-prophase band is absent and a unique hemispherical cell plate is formed and surrounds the generative nucleus (Terasaka and Niitsu 1990). Asymmetric cytoplasm cleavage is ensured by a curved profile of phragmoplast microtubules that appear to guide the centrifugal growth of the cell plate from its margin (Brown and Lemmon 1991). Mutations altering cell division asymmetry during pollen mitosis have been reported in Arabidopsis thaliana (Park et al. 1998) and B. decumbens (Junqueira Filho et al. 2003). This paper reports a new occurrence of symmetry in pollen mitoses (PM I and PM II) in a hybrid involving B. decumbens as the male genitor. Absence of cytokinesis following PM I and PM II was also observed.
650 $aPollen
650 $aBrachiaria Decumbens
650 $aBrachiaria Ruziziensis
650 $aGramínea Forrageira
650 $aMelhoramento Genético Vegetal
650 $aMitose
650 $aPastagem
653 $aBraquiária
700 1 $aPAGLIARINI, M. S.
700 1 $aVALLE, C. B. do
700 1 $aJANK, L.
773 $tJournal of Genetics, Bangalore$gv. 83, n. 3, p. 279-283, Dec. 2004.
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