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Information × Registration Number 0225U000741, (0121U107432) , R & D reports Title Investigate the peculiarities of the formation and functioning of symbiotic systems of soybean and alfalfa under the action of external environmental factors popup.stage_title Дослідити можливість розширення спектру реалізації симбіотичного та продуктивного потенціалу соєво-ризобіальних симбіозів за рахунок біологічно активних речовин природнього походження, регуляторів росту рослин і біологічних засобів захисту Head Kots Serhii Ya., д.б.н. Registration Date 18-01-2025 Organization Institute of Plant Physiology and Genetics of the National Academy of Sciences of Ukraine popup.description1 Investigation of physiological-biochemical and molecular-genetic features of formation and functioning of symbiotic systems of soybean and alfalfa with nodule bacteria under the action of biotic and abiotic external factors in order to create effective plant-microbial complexes to increase the productivity of legumes. popup.description2  As a result of the studies, the number of root nodules in the phase of three true leaves increased by 8.3-10.7% and their weight by 19.9-28.8% under the complex application of B. japonicum B78 with biofungicides Phytocide-r and Mikosan-N compared to the treatment with inoculants alone. An increase in the nitrogen-fixing activity (NFA) of symbiotic systems was found when soybean seeds were treated with B. japonicum B78 and Mikosan-N by 13.0% in the phase of three true leaves and by 7.8% in the budding phase. In soybean inoculated with B. japonicum В144 and treated with this biofungicide, the NFA was 8.8 times higher than in the control plants only in the budding phase. Under the action of Phytocide-r on the background of inoculation with rhizobia B78, an increase in NFA was observed by 6.2, 14.6 and 7.2% according to three samples. The analysis of the mass of the aerial parts of soybean plants and roots revealed that seed bacterisation with rhizobia, both in combination with biofungicides and without them, contributed to an increase in the studied parameters during the growing season compared to plants without this treatment. It was found that the complex treatment of soybean seeds of B. japonicum B78 seeds with Mikosan-N contributed to an increase in root weight by 4.9-8.0%. The treatment of soybean seeds of B. japonicum B 144 with Mikosan-N, a decrease in the weight of the aerial part of plants by 4.5-10.6% and the weight of roots by 6.1-9.5% during the growing season was found. Increase in grain productivity of soybean plants by 7.6 and 11.5% was found under the complex treatment of B. japonicum B144 and B78 seeds with Mikosan-N. With the combined use of nodule bacteria with Phytocide-r, the grain productivity of soybean plants was at the level of the corresponding controls (treated with inoculants without biofungicides). Product Description popup.authors Berehovenko Svitlana K. Vorobei Nadiia A. Kots Serhii Ya. Kukol Kateryna P. Melnykova Nataliia M. Mykhalkiv Liudmyla M. Omelchuk Svitlana V. Pukhtaievych Petro P. Rybachenko Liliia I. popup.nrat_date 2025-01-18 Close