Research Journal of Agricultural Sciences
Vol : 17 - Issue : 4 ; 488–495
Shivashankaragouda Patil*1, S. A. Desai2, Suma S. Biradar3, J. R. Diwan4, Krishnaraj P. U.5 Basvaraja B. Bagewadi6, Harshitha Kumar7, Ratnakala B8, Abhishek V Karadagi1 and Poojarani Malagatti9
1 Ph. D. Scholar, Department of Genetics and Plant Breeding, College of Agriculture, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
2-4 Professor, Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
5 Professor, Department of Microbiology, College of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
6 Associate Professor, Department of Biotechnology, College of Agriculture, Dharwad, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
7 Ph. D. Scholar, Department of Genetics and Plant Breeding, College of Agriculture, University of agricultural Sciences, Raichur -584 104, Karnataka, India
8 Ph. D. Scholar, Department of Entomology, College of Agriculture, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
9 Ph. D. Scholar, Department of Agriculture Microbiology, College of Agriculture, University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
Abstract
Drought stress severely restricts wheat productivity by impairing physiological and metabolic processes, necessitating the exploration of microbe-assisted strategies for enhancing tolerance. This study investigated the genotype-specific responses of twenty bread and durum wheat genotypes to Actinobacteria under controlled moisture-stress conditions. Seeds were treated with two Actinobacteria isolates (AUDT 545 and AUDT 862), a microbial consortium of both isolates and a microbe-untreated control. After 25 days of regular irrigation, drought stress was imposed by withholding water, reducing soil moisture to 9%. Biochemical traits (proline, total soluble sugars, peroxidase and superoxide dismutase activity) and root architectural parameters (root length, volume, surface area and diameter) were quantified to assess stress adaptation. The microbial consortium elicited the most pronounced improvements in osmotic adjustment, antioxidant activity and root system development, with distinct variation among genotypes. The findings highlight the potential of Actinobacteria-based inoculants particularly consortium formulations to enhance drought resilience in wheat through coordinated biochemical and root architectural modifications.
Shivashankaragouda Patil*1, S. A. Desai2, Suma S. Biradar3, J. R. Diwan4, Krishnaraj P. U.5 Basvaraja B. Bagewadi6, Harshitha Kumar7, Ratnakala B8, Abhishek V Karadagi1 and Poojarani Malagatti9
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Research Article | Published online : 22-Jul-2026