Biology of the medicinal plant Arum korolkowii Regel (Arum)

More than five thousand plant species thrive in various zones across Kazakhstan, representing a rich botanical diversity. Unfortunately, numerous plant species are becoming increasingly rare, and some are even threatened with extinction. The significance of utilizing medicinal plants has increased immeasurably in recent decades. The rational combination of medicinal plants holds the potential to expand therapeutic possibilities. However, the future use of medicinal plants may face significant limitations due to the overarching issue of diminishing biodiversity. While efforts to address biodiversity conservation predominantly focus on safeguarding species richness, the intraspecific variability of plants, crucial for population-level adaptation in transforming environments, remains inadequately explored. Particularly, the use of informative methods to study this variability has not received sufficient attention. Theoretical exploration of the population approach to conserving medicinal plant resources is lacking, exacerbated by a scarcity of experimental data in this domain, underscoring the relevance of this research. In light of the aforementioned challenges, it becomes evident that studying red-listed plants is pertinent not only in the context of Kazakhstan but also on a global scale. In this context, our research allowed investigate Arum Korolkov (Arum korolkowii Regel), a red-listed medicinal plant species found in the territories of Kazakhstan

INCREASING THE PRODUCTIVITY AND QUALITY OF VEGETABLE SOYBEANS IN USING VARIOUS GROWTH STIMULANTS IN UZBEKISTAN

For the developing of physiologically active substances, necessary to treat the seeds with humates, plant growth regulators that have a positive effect on the yield and quality of vegetable soybean seeds. They increase the adaptability of the culture to water, temperature and other stressful conditions. Studies have established that the lock of seeds of vegetable soybean variety Emerald in various growth stimulants significantly influenced the germination of seeds, growth and development, productivity and biochemical composition of beans. Options "B" - "C" and "D" - are the most effective in comparison with the control option "A" -seed locks in water and contributes to higher yields and high-quality beans

Co-inoculation of rhizobacteria promotes growth, yield, and nutrient contents in soybean and improves soil enzymes and nutrients under drought conditions

Drought stress is the major abiotic factor limiting crop production. Co-inoculating crops with nitrogen fixing bacteria and plant growth-promoting rhizobacteria (PGPR) improves plant growth and increases drought tolerance in arid or semiarid areas. Soybean is a major source of high-quality protein and oil for humans. It is susceptible to drought stress conditions. The co-inoculation of drought-stressed soybean with nodulating rhizobia and root-colonizing, PGPR improves the root and the shoot growth, formation of nodules, and nitrogen fixation capacity in soybean. The present study was aimed to observe if the co-inoculation of soybean (Glycine max L. (Merr.) nodulating with Bradyrhizobium japonicum USDA110 and PGPR Pseudomonas putida NUU8 can enhance drought tolerance, nodulation, plant growth, and nutrient uptake under drought conditions. The results of the study showed that co-inoculation with B. japonicum USDA110 and P. putida NUU8 gave more benefits in nodulation and growth of soybean compared to plants inoculated with B. japonicum USDA110 alone and uninoculated control. Under drought conditions, co-inoculation of B. japonicum USDA 110 and P. putida NUU8 significantly enhanced the root length by 56%, shoot length by 33%, root dry weight by 47%, shoot dry weight by 48%, and nodule number 17% compared to the control under drought-stressed. Co-inoculation with B. japonicum, USDA 110 and P. putida NUU8 significantly enhanced plant and soil nutrients and soil enzymes compared to control under normal and drought stress conditions. The synergistic use of B. japonicum USDA110 and P. putida NUU8 improves plant growth and nodulation of soybean under drought stress conditions. The results suggested that these strains could be used to formulate a consortium of biofertilizers for sustainable production of soybean under drought-stressed field conditions

Co-Inoculation of Rhizobacteria and Biochar Application Improves Growth and Nutrientsin Soybean and Enriches Soil Nutrients and Enzymes

Gradual depletion in soil nutrients has affected soil fertility, soil nutrients, and the activities of soil enzymes. The applications of multifarious rhizobacteria can help to overcome these issues, however, the effect of co-inoculation of plant-growth promoting rhizobacteria (PGPR) and biochar on growth andnutrient levelsin soybean and on the level of soil nutrients and enzymes needs in-depth study. The present study aimed to evaluate the effect of co-inoculation of multifarious Bradyrhizobium japonicum USDA 110 and Pseudomonas putida TSAU1 and different levels (1 and 3%) of biochar on growth parameters and nutrient levelsin soybean and on the level of soil nutrients and enzymes. Effect of co-inoculation of rhizobacteria and biochar (1 and 3%) on the plant growth parameters and soil biochemicals were studied in pot assay experiments under greenhouse conditions. Both produced good amounts of indole-acetic acid; (22 and 16 µg mL−1), siderophores (79 and 87%SU), and phosphate solubilization (0.89 and 1.02 99 g mL−1). Co-inoculation of B. japonicum with P. putida and 3% biochar significantly improved the growth and nutrient content ofsoybean and the level of nutrients and enzymes in the soil, thus making the soil more fertile to support crop yield. The results of this research provide the basis of sustainable and chemical-free farming for improved yields and nutrients in soybean and improvement in soil biochemical properties