Two samples of Allium odorum L. introduction study in South Ural Botanical Garden-Institute

The purpose of research is to study the developmental features of Allium decipiens Fisch. ex Schult. & Schult. fil. under culture conditions in the botanical garden: phenology, biomorphology and reproductive performance at different generative ages (young, middle-aged, old generative); assessment of the perspective of the species. The results of the introduction test of two accessions of Allium odorum L. (Riga and Bonn) are presented. Phenology, seed productivity, reproduction, agricultural technology and biochemical composition have been studied. This onion is characterized by a long growing season, the shoots grow in spring at the end of April, the flower arrow grows in the third decade of June - the first decade of July. The flowering phase is at the end of July. The Riga sample blooms 5-7 days earlier. From spring regrowth to the appearance of arrows - 80-90 days. Seeds begin to ripen in early September, flowering and fruit ripening lasts until mid-October. It vegetates within 170-180 days. Seed germination during winter sowing is up to 60-65 %. Weight 1000 pcs. seeds - up to 4.8 g. The coefficient of natural vegetative propagation is up to 3.5. In terms of chemical composition, allspice (Bonn sample) is the richest in ascorbic acid (59.5 mg%), of minerals - zinc (120.7 mg/kg) and iron (94.5 mg/kg). The species A. decipiens, when introduced into the South Ural Botanical Garden, has a stable phenological rhythm, annually blooms, bears fruit, and forms full-fledged seeds. The absolute weight of the seeds is 4.8 g. Reproductive indicators are high: real seed productivity (RSP) on average - 195 pcs. seeds, productivity coefficient - 43 %. Possesses good ability to seed and vegetative reproduction. A long-term introduction test of A. decipiens and an assessment of the success of its introduction show the prospects of its cultivation in the South Ural Region. The introduction of this species into the culture will expand and improve the range of ornamental plants in the South Ural Region. It is unpretentious in culture; the cultivation technique is simple. A. decipiens can be recommended for any kind of landscaping.