SciELO - Scientific Electronic Library Online

 
vol.33 número1Cromosomas de dos especies de Olyra l. de Misiones, Argentina (Poaceae, Bambusoideae, Olyreae)¿Qué nos dicen los primates neotropicales bajo la mirada de la citogenética? índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

Compartilhar


BAG. Journal of basic and applied genetics

versão On-line ISSN 1852-6233

Resumo

DAVINA, J.R et al. Chromosomic studies in Zephyranthes citrina baker (Amaryllidaceae), a polyploid ornamental. BAG, J. basic appl. genet. [online]. 2022, vol.33, n.1, pp.89-95. ISSN 1852-6233.  http://dx.doi.org/10.35407/bag.2022.33.01.08.

Zephyranthes citrina is an ornamental American bulbous plant used as an ornamental garden crop for the aesthetic qualities of its yellow perigonium. The objective of this work was to characterize the species by classical chromosome staining and fluorochrome banding. A sporophytic chromosome number of 2n=8x=48 chromosomes was observed, being the karyotypic formula 20 m + 26 sm + 2 st. Satellites were detected in the short arm of metacentric chromosomes 8, 9, 11 and 12, which colocalized with constitutive heterochromatin CMA+/DAPI-/0 bands. The karyotype comprised chromosome pairs with terminal constitutive heterochromatin bands that included satellites and heteromorphic clusters indicating that it is an allooctoploid. These results will be used as a tool for monitoring genetic improvement, in interspecific crosses and its progenies and in biotechnological procedures by in vitro culture.

Palavras-chave : Constitutive heterochromatin; Chromosome banding; Bulbous; Plant genetic resources; Karyotype.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )