Intrapopulational chromosome number variation in Zephyranthes sylvatica Baker (Amaryllidaceae: Hippeastreae) from northeast Brazil.

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dc.contributorWinston J. P. Félix, UFPB
dc.contributorJulie H. A. Dutilh, UNICAMP
dc.contributorNATONIEL FRANKLIN DE MELO, CPATSA
dc.contributorAndrea A. Fernandes, UFPB
dc.contributorLeonardo P. Félix, UFPB.
dc.creatorFELIX, W. J. P.
dc.creatorDUTILH, J. H. A.
dc.creatorMELO, N. F. de
dc.creatorFERNANDES, A. A.
dc.creatorFÉLIX, L. P.
dc.date2011-04-09T20:37:27Z
dc.date2011-04-09T20:37:27Z
dc.date2008-09-03
dc.date2008
dc.date2019-07-29T11:11:11Z
dc.date.accessioned2026-07-07T05:34:31Z
dc.descriptionZephyranthes 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.
dc.identifierRevista Brasileira de Botânica, São Paulo, v. 32, n. 2, p. 371-375, abr./jun. 2008.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/160140
dc.identifier.urihttp://hdl.handle.net/123456789/495467
dc.languageeng
dc.rightsopenAccess
dc.subjectZephyranthes sylvatica Baker
dc.subjectComossomo
dc.subjectVariação
dc.subjectTriplóide
dc.subjectLirio da Caatinga
dc.subjectPlanta Ornamental
dc.subjectMelhoramento Genético Vegetal
dc.subjectCaatinga
dc.subjectAmaryllidaceae
dc.subjectZephyranthes
dc.titleIntrapopulational chromosome number variation in Zephyranthes sylvatica Baker (Amaryllidaceae: Hippeastreae) from northeast Brazil.
dc.typeArtigo de periódico

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