ЕФЕКТИВНІСТЬ ВИКОРИСТАННЯ НАНОКАРБОКСИЛАТІВ Zn І Ge ЗА ІНОКУЛЯЦІЇ СОЇ БУЛЬБОЧКОВИМИ БАКТЕРІЯМИ В УМОВАХ ЗАСОЛЕННЯ

• Datum: 2025
• Hauptverfasser: Обезюк, І. М., Михалків, Л. М., Жемойда, А. В., Коць, С. Я.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: Institute of Agrocultural Microbiology and Agro-industrial Manufacture of NAAS of Ukraine 2025
• Schlagworte: Bradyrhizobium japonicum; Glycine max (L.) Merr.; нанокарбоксилати металів Ge i Zn; симбіоз; нодуляція; азотфіксація; вегетативна маса; зернова продуктивність
• Online Zugang: https://smic.in.ua/index.php/journal/article/view/537
• Назва журналу: Agriciltural microbiology

Objective. Study of germanium and zinc carboxylates influence in the inoculation suspension of nodule bacteria for pre-sowing seed processing on the formation and functioning of soybean symbiotic systems — Bradyrhizobium japonicum under salinity conditions. Methods. Microbiological, physiological, statistical. B. japonicum strain PC08 and soybean variety Samorodok were involved in the research. The nodulation activity of rhizobia (number and weight of nodules on plant roots), plant weight (aerial parts and roots) in the phases of budding, blooming and bean formation, as well as indicators of soybean grain productivity were studied. The nitrogen-fixing activity of the symbiotic system was determined by the acetylene-restoring method using an Agilent Technologies 6850 chromatograph (USA). Results. It was found that the introduction of zinc nanocarboxylate into the suspension of nodule bacteria immediately before seed inoculation inhibited the formation and functioning of the soybean – B. japonicum symbiotic system, regardless the presence of sodium chloride in the plant growing substrate. The addition of germanium nanocarboxylate favourably influenced the interaction of soybean with nodule bacteria under salinity during the growing season, increasing the number and weight of nodules by 7–35 % and 5–33 %, respectively, and nitrogen fixation activity by 3 % to 48 %, but did not have a prolonged positive effect on the vegetative mass of plants. It was shown that on a salt-free background, the use of zinc led to a decrease in grain productivity of plants, in particular, grain weight per plant by 15 % and weight of 1000 grains by 8 %. Under salinity conditions, the compounds of both nanometals provided a slight increase in the weight of 1000 grains, with Ge contributing to a 13 % increase in the weight of grain per plant, and zinc causing a 12 % decrease in the number of beans per plant. Conclusions. The possibility of using zinc compounds under the conditions of symbiosis formation requires additional complex researches, which would include, in particular, the selection of optimal concentrations and forms of preparations or bacterial strains tolerant to this element. The revealed positive effect of germanium nanocarboxylate on the background of sodium chloride requires further research in order to use it in the development of the ways to increase the productivity of soybean – B. japonicum symbiosis under salinity conditions.