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Idiogram of FISH-banded chromosomes of (a) Medicago sativa ssp. caerulea, (b) diploid M. sativa ssp. falcata, (c) tetraploid M. sativa ssp. falcata, and (d) M. sativa ssp. sativa. Idiogram of FISH-banded chromosomes of M. sativa ssp. sativa was summarized from four accessions [33]. Chromosomes of tetraploid ssp. sativa are marked with “′” on chromosome numbers. A small black dot next to the FISH signal indicates that the signal is polymorphic across accessions
