Barley doubled-haploid production by uniparental chromosome elimination

Uniparental elimination of chromosomes, which occurs in interspecific crosses between Hordeum vulgare (cultivated barley) and H. bulbosum (bulbous barley grass), is a process which can be used to produce doubled-haploid barley plants in breeding programs. We review the procedure of haploid production and the mechanism underlying selective elimination of one of the genomes during the early development of species hybrid embryos.