Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
03/09/2008 |
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Data da última atualização: |
29/07/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - A |
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Autoria: |
FELIX, W. J. P.; DUTILH, J. H. A.; MELO, N. F. de; FERNANDES, A. A.; FÉLIX, L. P. |
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Afiliação: |
Winston J. P. Félix, UFPB; Julie H. A. Dutilh, UNICAMP; NATONIEL FRANKLIN DE MELO, CPATSA; Andrea A. Fernandes, UFPB; Leonardo P. Félix, UFPB. |
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Título: |
Intrapopulational chromosome number variation in Zephyranthes sylvatica Baker (Amaryllidaceae: Hippeastreae) from northeast Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Revista Brasileira de Botânica, São Paulo, v. 32, n. 2, p. 371-375, abr./jun. 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
Zephyranthes Herb. is a taxonomically complex and cytologically variable group, withabout 65 species of Neotropical distribution. Chromosome number variability in 32 individuals of a Zephyranthes sylvaticapopulation from Northeast Brazil was investigated. Three cytotypes were found: 2n = 12 (one metacentric, four submetacentricand one acrocentric pairs), in 24 individuals; 2n = 12 + 1B, in five and three individuals with 2n = 18, a triploid cytotype.All diploid individuals showed chromosomes with polymorphism in pair one and two, while in triploids this polymorphismwas observed in all chromosome triplets, generally with two homomorphic chromosomes and a higher or lower heteromorphicchromosome. All individuals had reticulated interfasic nucleus and a slightly asymmetric chromosome complement, withone metacentric chromosome pair and the others more submetacentric to acrocentric. These data confirm the cytologicalvariability previously registered for the genus. Mechanisms involved in karyotypic evolution in this population are discussed. |
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Palavras-Chave: |
Comossomo; Lirio da Caatinga; Triplóide; Variação; Zephyranthes sylvatica Baker. |
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Thesagro: |
Caatinga; Melhoramento Genético Vegetal; Planta Ornamental. |
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Thesaurus NAL: |
Amaryllidaceae; Zephyranthes. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/38553/1/OPB1842.pdf
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Marc: |
LEADER 01944naa a2200289 a 4500
001 1160140
005 2019-07-29
008 2008 bl uuuu u00u1 u #d
100 1 $aFELIX, W. J. P.
245 $aIntrapopulational chromosome number variation in Zephyranthes sylvatica Baker (Amaryllidaceae$bHippeastreae) from northeast Brazil.
260 $c2008
520 $aZephyranthes Herb. is a taxonomically complex and cytologically variable group, withabout 65 species of Neotropical distribution. Chromosome number variability in 32 individuals of a Zephyranthes sylvaticapopulation from Northeast Brazil was investigated. Three cytotypes were found: 2n = 12 (one metacentric, four submetacentricand one acrocentric pairs), in 24 individuals; 2n = 12 + 1B, in five and three individuals with 2n = 18, a triploid cytotype.All diploid individuals showed chromosomes with polymorphism in pair one and two, while in triploids this polymorphismwas observed in all chromosome triplets, generally with two homomorphic chromosomes and a higher or lower heteromorphicchromosome. All individuals had reticulated interfasic nucleus and a slightly asymmetric chromosome complement, withone metacentric chromosome pair and the others more submetacentric to acrocentric. These data confirm the cytologicalvariability previously registered for the genus. Mechanisms involved in karyotypic evolution in this population are discussed.
650 $aAmaryllidaceae
650 $aZephyranthes
650 $aCaatinga
650 $aMelhoramento Genético Vegetal
650 $aPlanta Ornamental
653 $aComossomo
653 $aLirio da Caatinga
653 $aTriplóide
653 $aVariação
653 $aZephyranthes sylvatica Baker
700 1 $aDUTILH, J. H. A.
700 1 $aMELO, N. F. de
700 1 $aFERNANDES, A. A.
700 1 $aFÉLIX, L. P.
773 $tRevista Brasileira de Botânica, São Paulo$gv. 32, n. 2, p. 371-375, abr./jun. 2008.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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