Figure 2From: Similar patterns of rDNA evolution in synthetic and recently formed natural populations of Tragopogon(Asteraceae) allotetraploidsrDNA repeat inheritance in T. mirus determined by Southern blot hybridization. (A) Synthetic allotetraploid lines of T. mirus. (B) Diploid T. porrifolius x T. dubius hybrids. (C) Natural populations of T. mirus. (D) Profiles of parental diploids. Representative individuals are shown in the panels; the rest of the analysis expressed as a ratio of parental bands is shown in Figure 5A. Each S0 and S1 generation of synthetic allopolyploid (A) is encoded as follows: e.g. in 70-1, the first number is the line number, the second number indicates a particular lineage (Figure 1 and Table 1). The DNAs were digested with BstNI and hybridized with the ITS-1 probe. The number below each lane indicates percentage of T. dubius units out of total rDNA. DU - T. dubius units; PO - T. porrifolius units.Back to article page