Chromosome Bandings and Signal Pattern of FISH Using rDNAs in Bellevalia romana

抄録

The karyotype of Bellevalia romana L., which is composed of two long metacentric chromosomes (chromosome 1), two short subtelocentric chromosomes (chromosome 2), and four short submetacentric chromosomes (chromosomes 3 and 4), were analyzed by several techniques. C-bands, CMA₃ bands, Ag-staining bands, and FISH signals of 18S rDNA appeared at the same sites on the end of an arm of chromosomes 1 and 3. A large FISH signal with 5S rDNA was localized at the end of the long arm of chromosome 2, and a small signal appeared at the interstitial region of the long arm of chromosome 1. When compared with a previous report, there were differences in the CMA₃ band on chromosome 2 and a small 5S rDNA signal on chromosome 1.