Meiotic Chromosome Stability and Suppression of Crossover Between Non-homologous Chromosomes in xBrassicoraphanus, an Intergeneric Allotetraploid Derived From a Cross Between Brassica rapa and Raphanus sativus
Hybridization and polyploidization are major driving forces in plant evolution.Allopolyploids can be occasionally formed from a cross between distantly related species but often suffer from chromosome instability and infertility.xBrassicoraphanus is an intergeneric allotetraploid (AARR; 2n = 38) derived from a cross between Brassica rapa (AA; 2n =