Interspecific hybrids Allium as a genetic source of increasing the bioresource collection

Purpose. To obtain and evaluate breeding forms of interspecific allium hybrids based on economically useful characteristics and resistance to downy mildew to replenish the bioresource collection of the genus Allium L. Material and Methods. The studies were carried out on plants of progeny I1.5 from BC1 interspecific allium hybrids of crossing combinations F5 (A. cepa x A. vavilovii) and F5 (A. cepa x A. fistulosum). Morphological assessment was carried out according to the signs of the bulb. Plants in the field were grown using the technology of onion cultivation for this soil and climatic zone. The phytopathological assessment included identifying the nature of onion plants resistance to downy mildew.