Chromosome characterization and variability in some Iridaceae from Northeastern Brazil

Genetics and Molecular Biology

Lânia Isis F. Alves¹  Saulo Antônio A. Lima¹  Leonardo P. Felix¹ 

[1] ,Universidade Federal da Paraíba Departamento de Ciências Biológicas Laboratório de Citogenética VegetalAreia PB ,Brazil

关键词: Iridaceae;    disploidy;    karyotypic evolution;    polyploidy;    asymmetrical karyotype;   

DOI  :  10.1590/S1415-47572011000200016

来源: SciELO

【 摘 要 】

The chromosomes of 15 species of Iridaceae of the genera Alophia, Cipura, Eleutherine, Neomarica and Trimezia (subfamily Iridoideae) were examined after conventional Giemsa staining. The karyotypes of Alophia drummondii (2n = 14+1B, 28, 42 and 56), Cipura paludosa (2n = 14), C. xanthomelas (2n = 28) and Eleutherine bulbosa (2n = 12) were asymmetric; Neomarica candida, N. caerulea, N. humilis, N. glauca, N. gracilis, N. northiana and Neomarica sp. (2n = 18); N. cf. paradoxa (2n = 28), Trimezia fosteriana (2n = 52), T. martinicensis (2n = 54) and T. connata (2n = 82) were all generally symmetric. New diploid numbers of 2n = 56 for Alophia drummondii, 2n = 18 for N. candida, N. humilis, N. glauca, and N. gracilis, 2n = 28 for N. cf. paradoxa, and 2n = 82 for T. connata are reported. The karyotypic evolution of the studied species is discussed.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License