Philippe M Fortune et al.
American journal of botany, 95(4), 454-464 (2008-04-01)
The origin of polyploid Bromus species of section Genea was investigated using molecular data. This group of annual species native from the Old-World is composed of three diploids, two tetraploids, one hexaploid, and one octoploid. Molecular cloning, sequencing, and phylogenetic