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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
27/01/2006 |
Data da última atualização: |
14/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
Genetic structure of wild rice Oryza glumaepatula populations in three Brazilian biomes using microsatellite markers. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Genetica, v. 125, n. 2/3, p. 115-123, Nov. 2005. |
DOI: |
https://doi.org/10.1007/s10709-005-4916-4 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Genetic variability; Marcadores moleculares; Molecular markers; Oryza glumaepatula; Variabilidade genética. |
Thesagro: |
Arroz; Marcador Molecular; Recurso Genético. |
Thesaurus Nal: |
genetic resources; Oryza; population genetics. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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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8. | | SANTOS, E. A. dos; RODRIGUES, D. N.; MELQUIADES, J. R.; LIMA, L. S.; SILVA, R. D. M.; SANTOS, J. R.; SILVA, A. F. S. da; CUNHA, M. K. Avaliação do controle do Bipolaris maydis no capim Zuri com diferentes tratamentos. In: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 51., 2019, Recife. Anais... Brasília, DF: Sociedade Brasileira de Fitopatologia, 2019. p. 366.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Pesca e Aquicultura. |
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10. | | CORRÊA, M. P. F.; CÉSAR, J.; BASTOS, J. B.; BATISTA, M. de F.; XAVIER, J. J. B. N.; GUEDES, A. L. C.; MARTINS, C. da S.; SILVA, A. F. S. da; DANTAS, J. C. R.; MOTA, J. das G. S. Pesquisa e experimentação: cultura - guaraná. Manaus: EMBRAPA-UEPAE de Manaus, 1979. 21 p. Informes para Reunião de Programação de Pesquisa com a Cultura do Guaraná, biênio 1980/81 - Manaus, 29 a 31/08/79.Tipo: Artigo em Anais de Congresso |
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