Dilfuza P. Jabborova1, Yuriy I. Enakiev2, Kakhramon D. Davranov3, Shahjahon A. Begmatov4
1 Institute of Genetics and Plant Experimental Biology, Academy of Sciences of Uzbekistan, 15 Yuqori-yuz str., Kibray 111226, Uzbekistan
2 Nikola Pushkarov Institute of Soil Science, Agro-technology and Plant Protection, 7 Shosse Bankya str., Sofia 1331, Bulgaria
3 National University of Uzbekistan, 4 University str., Tashkent 100174, Uzbekistan
4 Russian Timiryazev State Agrarian University, 49 Timirjazevskaja str., Moscow 127550, Russia
Jabborova, D. P., Enakiev, Y. I., Davranov K. D., & Begmatov, Sh. A. (2018). Effect of co-inoculation with Bradyrhizobium japonicum and Pseudomonas putida on root morph-architecture traits, nodulation and growth of soybean in response to phosphorus supply under hydroponic conditions. Bulgarian Journal of Agricultural Science, 24(6), 1004–1011
Plant growth promoting Rhizobacteria with plant root inoculation plays important role in plant growth and yield. In our research, the root morph-architecture traits, nodulation and growth on soybean by Bradyrhizobium japonicum USDA 110 and Pseudomonas putida TSAU 1 strains effects were studied in high (250 µmol) and low (50 µmol) phosphorus nutrient solutions under hydroponic conditions. Soybean plants were grown for 45 days at 29°C day temperature and 20°C night temperature in phosphorus supply hydroponic conditions. Results revealed that the combination of B. japonicum and P. putida inoculation soybean significantly raised root morph-architecture traits, nodulation, and growth on soybean compared to control and single inoculation with B. japonicum USDA 110 alone under both nutrient solutions. There was a significant and positive correlation between root architecture and nodule number of soybean coinoculated with B. japonicum USDA 110 and P. putida TSAU 1 under high phosphorus (250 µM) nutrient condition. Our results indicate that the higher efficiency of the combination with B. japonicum USDA 110 and P. putida TSAU 1 symbiotic system is related to the ability to increase root morph-architecture traits, nodulation, and growth under low and high phosphorus nutrient solutions.