Cytotaxonomic studies in the Iberian species of the genusCuscuta(Convolvulaceae)

[摘要] Cuscuta is a genus of parasitic plants with great diversity in size, number and type of chromosomes. All the species included inCuscuta subgenusCuscuta are characterized by the holocentric chromosomes whereas they are monocentric in the species of subgeneraGrammicaandMonogyna . In this paper we summarize the data previously published on the karyology of the genus. study the chromosomic characterization of the Iberian species and identify new chromosome numbers for the genus and for several species. The chromosome numbers found in some species such asC. epithymumindícate the possibility of agmatoploidy and simploidy in the genus.

[学科分类] 植物学

[关键词] agmatoploidy;holocentric chromosomes;Cuscuta;symploidy