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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
08/10/1999 |
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Data da última atualização: |
30/03/2023 |
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Autoria: |
NOGUEIRA, C. Z.; RUAS, P. M.; RUAS, C. F.; FERRUCCI, M. S. |
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Afiliação: |
Universidade Estadual de Londrina, Departamento de Biologia Geral, Londrina; Instituto de Botanica del Nordeste, Corrientes, Argentina. |
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Título: |
Karyotypic study of some species of serjania and urvilllea (Sapindaceae; Tribe Paullinieae). |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
American Journal of Botany, v.82, n.5, p.646-654, 1995 |
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Idioma: |
Inglês |
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Conteúdo: |
Karyotypes of six species (in ten populations) of the genus Serjania and one species of the genus Urvillea were studied using root tip mitotic metaphases. All species of Serjania were diploids with 2n = 24 chromosomes and the species of Urvilllea was octoploid with 2n = 86 chromosomes. Analysis of the karyotypes of Serjania showed that the species are differentiated by chromosomic structural changes. Chromosome lengths showed great differences among the species that may be explained by chromosomal deletion or addition. The basic chromosomic number is x = 12 for Serjania and x = 11 for Urvillea. In Urvillea the evolutionary trend may be toward polyploidy followed by reductional aneuploidy. |
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Thesagro: |
Cariótipo. |
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Categoria do assunto: |
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Marc: |
LEADER 01207naa a2200169 a 4500
001 1648324
005 2023-03-30
008 1995 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, C. Z.
245 $aKaryotypic study of some species of serjania and urvilllea (Sapindaceae; Tribe Paullinieae).$h[electronic resource]
260 $c1995
520 $aKaryotypes of six species (in ten populations) of the genus Serjania and one species of the genus Urvillea were studied using root tip mitotic metaphases. All species of Serjania were diploids with 2n = 24 chromosomes and the species of Urvilllea was octoploid with 2n = 86 chromosomes. Analysis of the karyotypes of Serjania showed that the species are differentiated by chromosomic structural changes. Chromosome lengths showed great differences among the species that may be explained by chromosomal deletion or addition. The basic chromosomic number is x = 12 for Serjania and x = 11 for Urvillea. In Urvillea the evolutionary trend may be toward polyploidy followed by reductional aneuploidy.
650 $aCariótipo
700 1 $aRUAS, P. M.
700 1 $aRUAS, C. F.
700 1 $aFERRUCCI, M. S.
773 $tAmerican Journal of Botany$gv.82, n.5, p.646-654, 1995
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