No abstract

Nowadays, the created varieties of Vaccinium corymbosum L. (Ericaceae) are widespread in different regions of all continents with a suitable climate. Until now, mainly the fruits of these plants have been used, and the vegetative aerial part that remains when pruning the bushes has not been employed. Meanwhile, shoots of other species of Ericaceae have long been used as raw materials for the needs of pharmacy, medicine and veterinary medicine. Phytochemical screening methods were used for the detection of various phytochemicals in shoots of three varieties V. corymbosum introduced in Ukraine by qualitative chemical tests to give a general idea regarding the nature of constituents present in plant material, especially with antioxidant activity. Furthermore, the content of extractives was determined in the obtained extracts and their antioxidant activity by determining the total antioxidant capacity using the DPPH radical scavenging method on various stages of plant development. Phytochemical screening on the shoots of three V. corymbosum varieties (Bluejay, Bluecrop, Elliott) showed the presence of carbohydrates, reducing sugars, phenols, flavonoids, tannins, phlobatannins, hydroquinone and arbutin that exhibit antioxidant properties; the extractive value depends on the solvent and stage of plant development. Bluejay in aqueous extracts had the greatest amount of extractives during flowering and at the beginning of the winter period; in Bluecrop it was during fruiting and at the beginning of the winter period; and in Elliott — at the beginning of the winter period. Thus, we can assume the prospects of their study on antimicrobial properties, anti-inflammatory, anti-diabetic, as well as a feed additive for animal feed.

Aim. To investigate the antibacterial properties of the fl owers of melliferous plants on the cultures isolated from honeycombs affected by foulbrood. Methods. Microbiological, cultural-morphological, biochemical, electron- microscopic, statistical. Results. Antibacterial effect on the Melissococcus pluton 8.1 strain was demonstrated by the fl ower extracts of 14 plant species and that on Bacillusaspecies – by the fl ower extracts of 27 plant spe- cies blossoming in the early spring. Conclusions. To study bee colonies affected by foulbrood, it is possible to use the properties of such nectariferous plants as Lamium album, Acer campestre, Prunus tomentosa, Allium cepa, Tagetes patula, Spiraea japonica, Achillea millefolium, Calluna vulgaris, Mentha piperita, Tilia cordata, Centaurea jacea, Lysimachia nummularia. The results of the experiments on the culture of microorganisms, isolated from the honeycombs of the bee colonies affected by foulbrood, demonstrated that these plants could be effective for the prevention and treatment of bacterial bee diseases.

No abstract

The aim of the work was to determine optimal conditions for clonal reproduction, growth and development of different varieties of Vaccinium corymbosum from the foreign selection. The objects of research were 5 varieties of highbush blueberry: Bluejay, of early ripening period; Bluecrop, Bluegold, Legacy, of average ripening; Aurora, of late ripening. Optimal conditions of explant surface sterilization have been selected depending on their type and effectiveness of used disinfectants. Maximum quantity of viable sterile regenerates was obtained using the mixture of sterilizing solutions of alcohol and bleach "Belizna" with Tween. Effectiveness of