The chromosomes of the rare and endemic genus Famatinanthus (Famatinanthoideae, Asteraceae)

CHIARINI F.; BARBOZA G. E.; CANTERO, J. J.

Arnaldoa

Universidad Privada A. orrego

Lugar: Trujillo; Año: 2015 vol. 22 p. 495 - 505

Classical staining and in situ fluorescent hybridization with probes for the 18?5.8?26S and 5Sgenes were performed in Famatinathus decussatus (endemic from Argentina), in order to knowits main chromosomal characteristics and to compare them to related genera. The species is apaleopolyploid with 2n = 54, likely originated from x=9, and its karyotype features are conservative:one pair of 5S signals and two of 18?5.8?26S per complement were found. All the data are congruent with the basal position of this species in the Asteraceae phylogenies