INVESTIGADORES
ANGULO Maria betiana
artículos
Título:
Karyotypes of some species of the genus Lessingianthus (Vernonieae, Asteraceae) and taxonomic implications
Autor/es:
ANGULO, M. B.; DEMATTEIS, M.
Revista:
NORDIC JOURNAL OF BOTANY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2015 vol. 33 p. 239 - 248
ISSN:
0107-055X
Resumen:
We determined the karyotypes of nine species of Lessingianthus, eight of which are here analyzed for the frst time. Te results include the frst chromosome count for L. plantaginoides, which is tetraploid with 2n=64. All species showed a high proportion of metacentric chromosomes combined with a lower proportion of submetacentric pairs. Only L. coriaceus had a subtelocentric chromosome pair. B chromosomes were observed in L. coriaceus and L. varroniifolius, which were subtelocentric. Diferences among the karyotypes of the studied species were small, suggesting that karyotype diversity in the genus evolved by small changes in the structure of chromosomes. Karyotype features appear useful to distinguish Lessingianthus from the closely related genera Chrysolaena and Lepidaploa.