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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
30/05/2012 |
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Data da última atualização: |
30/05/2012 |
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Autoria: |
CONTERATO, I. F.; DALL'AGNOL, M.; SCHIFINO-WITTMANN, M. T.; JANKE, A. |
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Título: |
Microsatellite diversity and chromosome number in natural populations of Trifolium riograndense Burkart. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, SP, v. 69, n. 2, p. 114-118, mar./apr. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Twenty eight natural populations of Trifolium riograndense Burkart, an important forage legume from native pastures of the state of Rio Grande do Sul, Brazil, were evaluated for genetic diversity with eight Simple Sequences Repeats (SSR) markers. Chromosome numbers were also determined. The eight markers were polymorphic, with 35 alleles and an average of 4.37 alleles per locus, and Polymorphism Information Content (PIC) between 0.48 and 0.80. Group analysis based on Jaccard´s similarity coefficient separated the 28 accessions in nine groups, with an average genetic similarity of 0.44, indicating a high genetic variability among the populations. No evident relation between genetic distance and geographical origin was detected. The chromosome number of 2n=2x=16 was found in all populations, indicating lack of intraspecific variability for chromosome number in the species. This information on diversity can be used in conservation strategies as well as in genetic breeding programs of this species. |
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Palavras-Chave: |
Cytogenetics; Genetic diversity; Native clover; Native pastures. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01639naa a2200205 a 4500
001 1085339
005 2012-05-30
008 2012 bl uuuu u00u1 u #d
100 1 $aCONTERATO, I. F.
245 $aMicrosatellite diversity and chromosome number in natural populations of Trifolium riograndense Burkart.
260 $c2012
520 $aTwenty eight natural populations of Trifolium riograndense Burkart, an important forage legume from native pastures of the state of Rio Grande do Sul, Brazil, were evaluated for genetic diversity with eight Simple Sequences Repeats (SSR) markers. Chromosome numbers were also determined. The eight markers were polymorphic, with 35 alleles and an average of 4.37 alleles per locus, and Polymorphism Information Content (PIC) between 0.48 and 0.80. Group analysis based on Jaccard´s similarity coefficient separated the 28 accessions in nine groups, with an average genetic similarity of 0.44, indicating a high genetic variability among the populations. No evident relation between genetic distance and geographical origin was detected. The chromosome number of 2n=2x=16 was found in all populations, indicating lack of intraspecific variability for chromosome number in the species. This information on diversity can be used in conservation strategies as well as in genetic breeding programs of this species.
653 $aCytogenetics
653 $aGenetic diversity
653 $aNative clover
653 $aNative pastures
700 1 $aDALL'AGNOL, M.
700 1 $aSCHIFINO-WITTMANN, M. T.
700 1 $aJANKE, A.
773 $tScientia Agricola, Piracicaba, SP$gv. 69, n. 2, p. 114-118, mar./apr. 2012.
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