Douglas Soltis University of Florida Department of Botany Gainesville Florida 32611 USA firstname.lastname@example.org,Pamela Soltis Florida Museum of Natural History Gainesville Florida 32611 USA email@example.com,Enrique J. Leon
BSA Plant Images Online - Allotetraploids of Tragopogon
Over 50 years ago, Ownbey published the discovery of the newly formed allotetraploids of Tragopogon. Color photographs of these plants and their diploid parents and hybrids formed an historical color plate in the American Journal of Botany. Tragopogon continues to serve as a model for recent allopolyploidy, as shown on this cover and characterized by Pires et al. using molecular cytogenetics in this issue. The triangle indicates parentage and reciprocal origins of tetraploid species of Tragopogon from their diploid progenitors in North America. Arrows indicate diploid(s) contributing plastids to the tetraploids. Fluorescent in situ hybridization of centromeric (green) and subtelomeric (red) repetitive elements are shown on metaphase chromosomes of the diploid species.