Fig. 7From: Karyotypic evolution of the Medicago complex: sativa-caerulea-falcata inferred from comparative cytogenetic analysis a Reconstructing of chromosome-doubling process of diploid ssp. caerulea. Chromosomes of tetraploid ssp. sativa are marked with “′” on chromosome numbers. b Putative chromosome changes during polyploidization process. A small black dot next to the FISH signal indicates that the signal is polymorphic across accessionsBack to article page