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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
06/11/2006 |
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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, C.; BORBA, T. C. O.; RANGEL, P. H. N.; BRONDANI, R. P. V. |
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Afiliação: |
CLAUDIO BRONDANI, CNPAF; TEREZA CRISTINA DE OLIVEIRA BORBA, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; ROSANA PEREIRA VIANELLO, CNPAF. |
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Título: |
Determination of genetic variability of traditional varieties of Brazilian rice using microsatellite markers. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, v. 29, n. 4, p. 676-684, 2006. |
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DOI: |
https://doi.org/10.1590/S1415-47572006000400017 |
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Idioma: |
Inglês |
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Conteúdo: |
The rice (Oryza sativa) breeding program of the Rice and Bean research center of the Brazilian agricultural company Empresa Brasileira de Pesquisa Agropecuária (Embrapa) is well established and provides new cultivars every year to attend the demand for improved high yielding varieties with tolerance to biotic and abiotic stresses. However, the elite genitors used to compose new populations for selection are closely related, contributing to the yield plateau reached in the last 20 years. To overcome this limit, it is necessary to broaden the genetic basis of the cultivars using diverse germplasm such as wild relatives or traditional varieties, with the latter being more practical because they are more easily crossed with elite germplasm to accelerate the recovery of modern plant types in the breeding lines. The objective of our study was to characterize the allelic diversity of 192 traditional varieties of Brazilian rice using 12 simple sequence repeat (SSR or microsatellite) markers. The germplasm was divided into 39 groups by common name similarity. A total of 176 alleles were detected, 30 of which (from 23 accessions) were exclusive. The number of alleles per marker ranged from 6 to 22, with an average of 14.6 alleles per locus. We identified 16 accessions as a mixture of pure lines or heterozygous plants. Dendrogram analysis identified six clusters of identical accessions with different common names and just one cluster with identical accessions with the same common name, indicating that SSR markers are fundamental to determining the genetic relationship between landraces. A subset of 24 landraces, representatives of the 13 similarity groups plus the 11 accessions not grouped, was the most variable set of genotypes analyzed. These accessions can be used as genitors to increase the genetic variability available to rice breeding programs. MenosThe rice (Oryza sativa) breeding program of the Rice and Bean research center of the Brazilian agricultural company Empresa Brasileira de Pesquisa Agropecuária (Embrapa) is well established and provides new cultivars every year to attend the demand for improved high yielding varieties with tolerance to biotic and abiotic stresses. However, the elite genitors used to compose new populations for selection are closely related, contributing to the yield plateau reached in the last 20 years. To overcome this limit, it is necessary to broaden the genetic basis of the cultivars using diverse germplasm such as wild relatives or traditional varieties, with the latter being more practical because they are more easily crossed with elite germplasm to accelerate the recovery of modern plant types in the breeding lines. The objective of our study was to characterize the allelic diversity of 192 traditional varieties of Brazilian rice using 12 simple sequence repeat (SSR or microsatellite) markers. The germplasm was divided into 39 groups by common name similarity. A total of 176 alleles were detected, 30 of which (from 23 accessions) were exclusive. The number of alleles per marker ranged from 6 to 22, with an average of 14.6 alleles per locus. We identified 16 accessions as a mixture of pure lines or heterozygous plants. Dendrogram analysis identified six clusters of identical accessions with different common names and just one cluster with identical accessions with the same common name,... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Microsatellite markers. |
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Thesagro: |
Arroz; Oryza Sativa; Recurso Genético. |
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Thesaurus Nal: |
rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/166814/1/CNPAF-2006-cb.pdf
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Marc: |
LEADER 02626naa a2200241 a 4500
001 1214434
005 2022-05-14
008 2006 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1415-47572006000400017$2DOI
100 1 $aBRONDANI, C.
245 $aDetermination of genetic variability of traditional varieties of Brazilian rice using microsatellite markers.$h[electronic resource]
260 $c2006
520 $aThe rice (Oryza sativa) breeding program of the Rice and Bean research center of the Brazilian agricultural company Empresa Brasileira de Pesquisa Agropecuária (Embrapa) is well established and provides new cultivars every year to attend the demand for improved high yielding varieties with tolerance to biotic and abiotic stresses. However, the elite genitors used to compose new populations for selection are closely related, contributing to the yield plateau reached in the last 20 years. To overcome this limit, it is necessary to broaden the genetic basis of the cultivars using diverse germplasm such as wild relatives or traditional varieties, with the latter being more practical because they are more easily crossed with elite germplasm to accelerate the recovery of modern plant types in the breeding lines. The objective of our study was to characterize the allelic diversity of 192 traditional varieties of Brazilian rice using 12 simple sequence repeat (SSR or microsatellite) markers. The germplasm was divided into 39 groups by common name similarity. A total of 176 alleles were detected, 30 of which (from 23 accessions) were exclusive. The number of alleles per marker ranged from 6 to 22, with an average of 14.6 alleles per locus. We identified 16 accessions as a mixture of pure lines or heterozygous plants. Dendrogram analysis identified six clusters of identical accessions with different common names and just one cluster with identical accessions with the same common name, indicating that SSR markers are fundamental to determining the genetic relationship between landraces. A subset of 24 landraces, representatives of the 13 similarity groups plus the 11 accessions not grouped, was the most variable set of genotypes analyzed. These accessions can be used as genitors to increase the genetic variability available to rice breeding programs.
650 $arice
650 $aArroz
650 $aOryza Sativa
650 $aRecurso Genético
653 $aBrasil
653 $aMicrosatellite markers
700 1 $aBORBA, T. C. O.
700 1 $aRANGEL, P. H. N.
700 1 $aBRONDANI, R. P. V.
773 $tGenetics and Molecular Biology$gv. 29, n. 4, p. 676-684, 2006.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| 2. |  | DIAS, A. C.; FIGLIOLIA, M. B.; MOURA NETTO, B. V.; NOGUEIRA, J. C. B.; SILVA, A. da; SIQUEIRA, A. C. M. F.; YAMAZOE, G. Pesquisa sobre palmito no Instituto Florestal de Sao Paulo. In: ENCONTRO NACIONAL DE PESQUISADORES DE PALMITO, 1., 1987, Curitiba. Anais. Curitiba: EMBRAPA-CNPF, 1988. p.63-74. (EMBRAPA-CNPF. Documentos, 19).| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 2 | |
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