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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
16/10/2023 |
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Data da última atualização: |
16/10/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, R. S. de; MARTINS, C. R.; CASTRO, C. M.; PINHEIRO, N. L.; MELLO-FARIAS, P. C. de. |
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Afiliação: |
RAFAELA SCHMIDT DE SOUZA; CARLOS ROBERTO MARTINS, CPACT; CAROLINE MARQUES CASTRO, CPACT; NATERCIA LOBATO PINHEIRO LIMA, CPACT; PAULO CELSO DE MELLO-FARIAS, UNIVERSIDADE FEDERAL DE PELOTAS. |
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Título: |
Genetic variability in pecan genotypes in Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista Ceres, Viçosa, v. 70, n. 5, e70504, Aug./Sep 2023. |
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DOI: |
10.1590/0034-737X202370050004 |
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Idioma: |
Inglês |
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Conteúdo: |
Pecan crops has been expanding in recent years, mainly in southern Brazil. Genotypes that compose Brazilian orchards come from the USA and from selections of plants made by Brazilian producers. This study aimed to characterize with microsatellite markers pecan cultivars registered for cultivation in Brazil, including some selections made in the country. It is important to know the genetic variability of the pecan tree, as it facilitates the identification of possible phytotechnical deficiencies due to the genetic similarity between the plants, in addition to helping in the conservation of the species, among other. Thirty-four, out of forty collected accessions, were genotyped with 11 selected SSR (Simple Sequence Repeats) loci. Twenty-four polymorphic alleles were identified. The genetic similarity matrix, based on the Jaccard coefficient, ranged from 0.125 to 1.0; general mean of similarity was 0.46. The cluster analysis, which was carried out by the Unweighted Pair Group Method with Arithmetic Mean (UPGMA), classified pecan accessions into four main groups. Results showed that there is high genetic variability in germplasm evaluated, although some accessions may be duplicates. |
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Thesagro: |
Noz; Noz Peca. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1157269/1/Artigo-2023-genetic-pecan.pdf
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Marc: |
LEADER 01782naa a2200205 a 4500
001 2157269
005 2023-10-16
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1590/0034-737X202370050004$2DOI
100 1 $aSOUZA, R. S. de
245 $aGenetic variability in pecan genotypes in Brazil.$h[electronic resource]
260 $c2023
520 $aPecan crops has been expanding in recent years, mainly in southern Brazil. Genotypes that compose Brazilian orchards come from the USA and from selections of plants made by Brazilian producers. This study aimed to characterize with microsatellite markers pecan cultivars registered for cultivation in Brazil, including some selections made in the country. It is important to know the genetic variability of the pecan tree, as it facilitates the identification of possible phytotechnical deficiencies due to the genetic similarity between the plants, in addition to helping in the conservation of the species, among other. Thirty-four, out of forty collected accessions, were genotyped with 11 selected SSR (Simple Sequence Repeats) loci. Twenty-four polymorphic alleles were identified. The genetic similarity matrix, based on the Jaccard coefficient, ranged from 0.125 to 1.0; general mean of similarity was 0.46. The cluster analysis, which was carried out by the Unweighted Pair Group Method with Arithmetic Mean (UPGMA), classified pecan accessions into four main groups. Results showed that there is high genetic variability in germplasm evaluated, although some accessions may be duplicates.
650 $aNoz
650 $aNoz Peca
700 1 $aMARTINS, C. R.
700 1 $aCASTRO, C. M.
700 1 $aPINHEIRO, N. L.
700 1 $aMELLO-FARIAS, P. C. de
773 $tRevista Ceres, Viçosa$gv. 70, n. 5, e70504, Aug./Sep 2023.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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Data corrente: |
07/01/2010 |
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Data da última atualização: |
25/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SOUZA, L. V. de; MIRANDA, G. V.; GALVÃO, J. C. C.; GUIMARAES, L. J. M.; SANTOS, I. C. dos. |
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Afiliação: |
LEANDRO VAGNO DE SOUZA, Dow Agrosciences - SP; GLAUCO VIEIRA MIRANDA, UFV; JOÃO CARLOS CARDOSO GALVÃO, UFV; LAURO JOSE MOREIRA GUIMARAES, CNPMS; IZABEL CRISTINA DOS SANTOS, EPAMIG. |
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Título: |
Combining ability of maize grain yield under different levels of environmental stress. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 10, p. 1297-1303, out. 2009. |
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DOI: |
10.1590/S0100-204X2009001000013 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract ? The objectives of this work were to caracterize the tropical maize germplasm and to compare the combining abilities of maize grain yield under different levels of environmental stress. A diallel was performed among tropical maize cultivars with wide adaptability, whose hybrid combinations were evaluated in two sowing dates, in two years. The significance of the environmental effect emphasized the environmental contrasts. Based on grain yield, the environments were classified as favorable (8,331 kg ha-1), low stress (6,637 kg ha-1), high stress (5,495 kg ha-1), and intense stress (2,443 kg ha-1). None of the genetic effects were significant in favorable and intense stress environments, indicating that there was low germplasm variability under these conditions. In low and high stresses, the specific combining ability effects (SCA) were significant, showing that the nonadditive genetic effects were the most important, and that it is possible to select parent pairs with breeding potential. SCA and grain yield showed significant correlations only between the closer environment pairs like favorable/low stress and high/intense stress. The genetic control of grain yield differed under contrasting stress environments for which maize cultivars with wide adaptability are not adequate. |
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Palavras-Chave: |
Capacidade de combinação; Diallel; Estresse abiótico; Melhoramento genético; Produtividade de grãos de milho. |
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Thesagro: |
Controle Genético; Zea Mays. |
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Thesaurus NAL: |
Breeding; Drought. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/160670/1/Combining-ability.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE-2010/47252/1/44n10a13.pdf
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Marc: |
LEADER 02192naa a2200289 a 4500
001 1580240
005 2018-05-25
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1590/S0100-204X2009001000013$2DOI
100 1 $aSOUZA, L. V. de
245 $aCombining ability of maize grain yield under different levels of environmental stress.
260 $c2009
520 $aAbstract ? The objectives of this work were to caracterize the tropical maize germplasm and to compare the combining abilities of maize grain yield under different levels of environmental stress. A diallel was performed among tropical maize cultivars with wide adaptability, whose hybrid combinations were evaluated in two sowing dates, in two years. The significance of the environmental effect emphasized the environmental contrasts. Based on grain yield, the environments were classified as favorable (8,331 kg ha-1), low stress (6,637 kg ha-1), high stress (5,495 kg ha-1), and intense stress (2,443 kg ha-1). None of the genetic effects were significant in favorable and intense stress environments, indicating that there was low germplasm variability under these conditions. In low and high stresses, the specific combining ability effects (SCA) were significant, showing that the nonadditive genetic effects were the most important, and that it is possible to select parent pairs with breeding potential. SCA and grain yield showed significant correlations only between the closer environment pairs like favorable/low stress and high/intense stress. The genetic control of grain yield differed under contrasting stress environments for which maize cultivars with wide adaptability are not adequate.
650 $aBreeding
650 $aDrought
650 $aControle Genético
650 $aZea Mays
653 $aCapacidade de combinação
653 $aDiallel
653 $aEstresse abiótico
653 $aMelhoramento genético
653 $aProdutividade de grãos de milho
700 1 $aMIRANDA, G. V.
700 1 $aGALVÃO, J. C. C.
700 1 $aGUIMARAES, L. J. M.
700 1 $aSANTOS, I. C. dos
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 44, n. 10, p. 1297-1303, out. 2009.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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