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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
13/04/2011 |
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Data da última atualização: |
13/04/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RITCHEL, P. S.; REVERS, F. L.; OLIVEIRA, P. R.; LEITE, G. B.; FERREIRA, M. |
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Afiliação: |
Epagri |
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Título: |
Genetic analysis of accessions in a pear germplasm bank. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Acta Horticulturae, Leuven, v. 800, n. 1, p. 409-416, 2008. |
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Idioma: |
Inglês |
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Notas: |
ISSN, 0567-7572 |
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Conteúdo: |
Genetic diversity of germplasm collections is the base of breeding programs and it is essential to the raising of new genetic combinations aimed at the development of new cultivars. In Brazil, the pear germplasm collection is maintained in orchards by the EPAGRI-EE Caçador. The aim of this work was to analyze the genetic diversity of an initial sample of 46 accessions of this collection, by Random Amplified Polymorphic DNA (RAPD). European (Pyrus communis), Asian (P. pyrifolia and P. ussuriensis) and hybrid cultivars were used. From 160 randomic primers, 11 primers, yielding 87 reproducible and polymorphic markers, were chosen and used for similarity analysis. The cluster analysis resulted in a dendrogram that showed, with few exceptions, European, Asian and hybrid cultivars as distinct groups. By using these markers, the Chinese and Japanese cultivars could be discriminated. The study illustrates how genetic information can be valuable to the organization of germplasm collections. Accessions named differently as 'William's' and 'Bartlett' showed 100% of genetic similarity and probably correspond to the European pear cultivar 'Bon Chrétien Williams' (synonym: 'Williams ? Bartlett de Boston'). On the other hand, two accessions identified with the same name, 'Óstia', did not show genetic identity and are, therefore, distinct accessions. This study is being extended to several other accessions of the collection and completed with the analysis of DNA hypervariable regions (microsatellites). MenosGenetic diversity of germplasm collections is the base of breeding programs and it is essential to the raising of new genetic combinations aimed at the development of new cultivars. In Brazil, the pear germplasm collection is maintained in orchards by the EPAGRI-EE Caçador. The aim of this work was to analyze the genetic diversity of an initial sample of 46 accessions of this collection, by Random Amplified Polymorphic DNA (RAPD). European (Pyrus communis), Asian (P. pyrifolia and P. ussuriensis) and hybrid cultivars were used. From 160 randomic primers, 11 primers, yielding 87 reproducible and polymorphic markers, were chosen and used for similarity analysis. The cluster analysis resulted in a dendrogram that showed, with few exceptions, European, Asian and hybrid cultivars as distinct groups. By using these markers, the Chinese and Japanese cultivars could be discriminated. The study illustrates how genetic information can be valuable to the organization of germplasm collections. Accessions named differently as 'William's' and 'Bartlett' showed 100% of genetic similarity and probably correspond to the European pear cultivar 'Bon Chrétien Williams' (synonym: 'Williams ? Bartlett de Boston'). On the other hand, two accessions identified with the same name, 'Óstia', did not show genetic identity and are, therefore, distinct accessions. This study is being extended to several other accessions of the collection and completed with the analysis of DNA hypervariable regions (micro... Mostrar Tudo |
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Palavras-Chave: |
Breeding; Molecular characterization; P. pyrifolia; Pyrus communis; RAPD. |
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Categoria do assunto: |
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Marc: |
LEADER 02027naa a2200193 a 4500
001 1075684
005 2011-04-13
008 2008 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aGenetic analysis of accessions in a pear germplasm bank.
260 $c2008
500 $aISSN, 0567-7572
520 $aGenetic diversity of germplasm collections is the base of breeding programs and it is essential to the raising of new genetic combinations aimed at the development of new cultivars. In Brazil, the pear germplasm collection is maintained in orchards by the EPAGRI-EE Caçador. The aim of this work was to analyze the genetic diversity of an initial sample of 46 accessions of this collection, by Random Amplified Polymorphic DNA (RAPD). European (Pyrus communis), Asian (P. pyrifolia and P. ussuriensis) and hybrid cultivars were used. From 160 randomic primers, 11 primers, yielding 87 reproducible and polymorphic markers, were chosen and used for similarity analysis. The cluster analysis resulted in a dendrogram that showed, with few exceptions, European, Asian and hybrid cultivars as distinct groups. By using these markers, the Chinese and Japanese cultivars could be discriminated. The study illustrates how genetic information can be valuable to the organization of germplasm collections. Accessions named differently as 'William's' and 'Bartlett' showed 100% of genetic similarity and probably correspond to the European pear cultivar 'Bon Chrétien Williams' (synonym: 'Williams ? Bartlett de Boston'). On the other hand, two accessions identified with the same name, 'Óstia', did not show genetic identity and are, therefore, distinct accessions. This study is being extended to several other accessions of the collection and completed with the analysis of DNA hypervariable regions (microsatellites).
653 $aBreeding
653 $aMolecular characterization
653 $aP. pyrifolia
653 $aPyrus communis
653 $aRAPD
773 $tActa Horticulturae, Leuven$gv. 800, n. 1, p. 409-416, 2008.
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Registro original: |
Epagri-Sede (Epagri-Sede) |
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Registro |
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Voltar
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
07/05/2012 |
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Data da última atualização: |
07/05/2012 |
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Tipo da produção científica: |
Artigo de Divulgação na Mídia |
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Circulação/Nível: |
-- - -- |
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Autoria: |
BALDISSERA, I. T. |
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Afiliação: |
Epagri |
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Título: |
Os prejuizos da estiagem. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Diário do Iguaçu, Chapecó, SC, 26 abr. 2012. |
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Idioma: |
Português |
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Palavras-Chave: |
Estiagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00297naa a2200121 a 4500
001 1084789
005 2012-05-07
008 2012 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aOs prejuizos da estiagem.
260 $c2012
653 $aEstiagem
773 $tDiário do Iguaçu, Chapecó, SC, 26 abr. 2012.
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