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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
30/10/2007 |
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Data da última atualização: |
06/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FREITAS, D. V. de; CARVALHO, C. R.; NASCIMENTO FILHO, F. J. do; ASTOLFI-FILHO, S. |
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Afiliação: |
Danival Vieira de Freitas, Ufam; Carlos Roberto Carvalho, UFV; Firmino José do Nascimento Filho, CPAA; Spartaco Astolfi-Filho, Ufam. |
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Título: |
Karyotype with 210 chromosomes in guaraná ( Paullinia cupana 'Sorbilis'). |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Journal of Plant Research, v. 120, n. 3, p. 399-404, may. 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The genus Paullinia includes the economically important P. cupana, known as guaraná in Brazil and more recently in the world market. Native Americans of the Maué and Andirá tribes cultivated P. cupana ?Sorbilis? in central Amazon, and the Barés cultivated the ?Typica? variety in the upper Negro River (Brazil). Cytological studies in the Sapindaceae family have concentrated on the diversity in number (from 2n = 14 to 96) and size of the chromosomes. In Paullinia, seven species have been karyotyped and all show 2n = 24. Meristem maceration, cellular dissociation and air-drying techniques were used for cytogenetic preparations and DNA content was determined by flow cytometry. Chromosome characterization and DNA content of Paullinia cupana Kunth ?Sorbilis? (Mart.) Ducke (Sapindaceae) were studied. The high chromosome number (2n = 210) fall into two cytomorphological groups: (a) a metacentric and submetacentric group showing 25 sets of three pairs of chromosomes (2?76); (b) a group containing only acrocentric showing 12 sets of two pairs of chromosomes (82?105), a homologous submetacentric pair (1) and an acrocentric pair (81). Mean nuclear DNA content of guaraná was 2C = 22.8 pg. A karyogram was set up showing a high chromosome number complement. |
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Palavras-Chave: |
Cromossomo. |
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Thesagro: |
Guaraná; Paullinia Cupana. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01826naa a2200193 a 4500
001 1681316
005 2015-01-06
008 2007 bl uuuu u00u1 u #d
100 1 $aFREITAS, D. V. de
245 $aKaryotype with 210 chromosomes in guaraná ( Paullinia cupana 'Sorbilis').
260 $c2007
520 $aThe genus Paullinia includes the economically important P. cupana, known as guaraná in Brazil and more recently in the world market. Native Americans of the Maué and Andirá tribes cultivated P. cupana ?Sorbilis? in central Amazon, and the Barés cultivated the ?Typica? variety in the upper Negro River (Brazil). Cytological studies in the Sapindaceae family have concentrated on the diversity in number (from 2n = 14 to 96) and size of the chromosomes. In Paullinia, seven species have been karyotyped and all show 2n = 24. Meristem maceration, cellular dissociation and air-drying techniques were used for cytogenetic preparations and DNA content was determined by flow cytometry. Chromosome characterization and DNA content of Paullinia cupana Kunth ?Sorbilis? (Mart.) Ducke (Sapindaceae) were studied. The high chromosome number (2n = 210) fall into two cytomorphological groups: (a) a metacentric and submetacentric group showing 25 sets of three pairs of chromosomes (2?76); (b) a group containing only acrocentric showing 12 sets of two pairs of chromosomes (82?105), a homologous submetacentric pair (1) and an acrocentric pair (81). Mean nuclear DNA content of guaraná was 2C = 22.8 pg. A karyogram was set up showing a high chromosome number complement.
650 $aGuaraná
650 $aPaullinia Cupana
653 $aCromossomo
700 1 $aCARVALHO, C. R.
700 1 $aNASCIMENTO FILHO, F. J. do
700 1 $aASTOLFI-FILHO, S.
773 $tJournal of Plant Research$gv. 120, n. 3, p. 399-404, may. 2007.
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Embrapa Amazônia Ocidental (CPAA) |
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