Fig. 4

Schematic illustration of karyotype evolution in sugarcane. Ideograms illustrating showing karyotype evolution among putative sugarcane diploid ancestor sorghum BTx623 (2n = 2x = 20), Sa. spontaneum Np-X (2n = 4x = 40), 2012–46 (2n = 6x = 54) and AP85–441 (1n = 4x = 32). The position of the oligo probes on the chromosome were drawn based on the FISH results. The pink dotted rectangles represent the chromosomes involved in the fission and translocation event of chromosome 5. The blue dotted rectangles represent the chromosomes involved in the fission and translocation event of chromosome 8