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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
27/01/2006 |
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Data da última atualização: |
14/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BRONDANI, R. P. V.; ZUCCHI, M. I.; BRONDANI, C.; RANGEL, P. H. N.; BORBA, T. C. de O.; RANGEL, P. N.; MAGALHÃES, M. R.; VENCOVSKY, R. |
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Afiliação: |
ROSANA PEREIRA VIANELLO, CNPAF; MARIA IMACULADA ZUCCHI; CLAUDIO BRONDANI, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; TEREZA CRISTINA DE OLIVEIRA BORBA, CNPAF; PRISCILA NASCIMENTO RANGEL; MARA RUBIA MAGALHAES, UFG; ROLAND VENCOVSKY, ESALQ. |
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Título: |
Genetic structure of wild rice Oryza glumaepatula populations in three Brazilian biomes using microsatellite markers. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Genetica, v. 125, n. 2/3, p. 115-123, Nov. 2005. |
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DOI: |
https://doi.org/10.1007/s10709-005-4916-4 |
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Idioma: |
Inglês |
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Conteúdo: |
The existence of Oryza glumaepatula is threatened by devastation and, thus, the implementation of conservation strategies is extremely relevant. This study aimed to characterize the genetic variability and estimate population parameters of 30 O. glumaepatula populations from three Brazilian biomes using 10 microsatellite markers. The levels of allelic variability for the SSR loci presented a mean of 10.3 alleles per locus and a value of 0.10 for the average allelic frequency value. The expected total heterozygosity (He) ranged from 0.63 to 0.86. For the 30 populations tested, the mean observed (Ho) and expected heterozygosities (He) were 0.03 and 0.11within population, respectively, indicating an excess of homozygotes resulting from the preferentially self-pollinating reproduction habit. The estimated fixation index ( IS ) was 0.79 that differed significantly from zero, indicating high inbreeding within each O. glumaepatula population. The total inbreeding of the species (IT ) was 0.98 and the genetic diversity indexes among populations, ST and ST, were 0.85 and 0.90, respectively, indicating high genetic variability among them. Thus, especially for populations located in regions threatened with devastation, it is urgent that in situ preservation conditions should be created or that collections be made for ex situ preservation to prevent loss of the species genetic variability. |
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Palavras-Chave: |
Genetic variability; Marcadores moleculares; Molecular markers; Oryza glumaepatula; Variabilidade genética. |
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Thesagro: |
Arroz; Marcador Molecular; Recurso Genético. |
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Thesaurus Nal: |
genetic resources; Oryza; population genetics. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02468naa a2200349 a 4500
001 1213849
005 2022-05-14
008 2005 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10709-005-4916-4$2DOI
100 1 $aBRONDANI, R. P. V.
245 $aGenetic structure of wild rice Oryza glumaepatula populations in three Brazilian biomes using microsatellite markers.$h[electronic resource]
260 $c2005
520 $aThe existence of Oryza glumaepatula is threatened by devastation and, thus, the implementation of conservation strategies is extremely relevant. This study aimed to characterize the genetic variability and estimate population parameters of 30 O. glumaepatula populations from three Brazilian biomes using 10 microsatellite markers. The levels of allelic variability for the SSR loci presented a mean of 10.3 alleles per locus and a value of 0.10 for the average allelic frequency value. The expected total heterozygosity (He) ranged from 0.63 to 0.86. For the 30 populations tested, the mean observed (Ho) and expected heterozygosities (He) were 0.03 and 0.11within population, respectively, indicating an excess of homozygotes resulting from the preferentially self-pollinating reproduction habit. The estimated fixation index ( IS ) was 0.79 that differed significantly from zero, indicating high inbreeding within each O. glumaepatula population. The total inbreeding of the species (IT ) was 0.98 and the genetic diversity indexes among populations, ST and ST, were 0.85 and 0.90, respectively, indicating high genetic variability among them. Thus, especially for populations located in regions threatened with devastation, it is urgent that in situ preservation conditions should be created or that collections be made for ex situ preservation to prevent loss of the species genetic variability.
650 $agenetic resources
650 $aOryza
650 $apopulation genetics
650 $aArroz
650 $aMarcador Molecular
650 $aRecurso Genético
653 $aGenetic variability
653 $aMarcadores moleculares
653 $aMolecular markers
653 $aOryza glumaepatula
653 $aVariabilidade genética
700 1 $aZUCCHI, M. I.
700 1 $aBRONDANI, C.
700 1 $aRANGEL, P. H. N.
700 1 $aBORBA, T. C. de O.
700 1 $aRANGEL, P. N.
700 1 $aMAGALHÃES, M. R.
700 1 $aVENCOVSKY, R.
773 $tGenetica$gv. 125, n. 2/3, p. 115-123, Nov. 2005.
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