title: Breakdown of the balanced lethals in Rhoeo: the structure of the Alethal Renner complex of the homozygotic stock of Rhoeo.
abstract: Fluorescence in situ hybridization, base-specific fluorescence, C-banding and silver-staining were performed to reveal the cyto-molecular constitution of the karyotype in the bivalent-forming Rhoeo spathacea concolor. It was shown that the genome of this form is almost identical to the β-complex of the ring-forming rhoeos. In spite of some modifications in the arrangement of a few distal rDNA sites and in the amount of pericentromeric AT-rich heterochromatin, the alethal genome of the bivalent-forming Rhoeo seems segmentally unaltered. Thus, the breakdown of balanced lethals in Rhoeo is most likely uncoupled from creating new chromosome arm combinations.
authors.affiliation: Department of Molecular Biology, Institute of Biotechnology, John Paul II Catholic University of Lublin, Lublin, Poland. h.golczyk@wp.pl
authors.forename: H
authors.initials: H
authors.lastname: Golczyk
mesh_terms: D032461:Chromosomes, Plant; D004275:DNA, Ribosomal / Q000235:genetics; D005804:Genes, Lethal; D006720:Homozygote; D017404:In Situ Hybridization, Fluorescence; D010944:Plants / Q000235:genetics*
chemical_list: D004275:DNA, Ribosomal