ISSN : 2663-2187

Role of plant growth promoting rhizobacteria and salicylic acid on morphological characteristics of sorghum under drought conditions

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Deepti Narwal, Preety, Amita, Pooja , Kirpa Ram
» doi: 10.33472/AFJBS.6.Si2.2024.2140-2153

Abstract

Drought is a multidimensional stress factor which negatively impacts plant growth, development, metabolism as well as plant yield. Firstly, drought sign showed on the plant’s morphological attributes. So, the present study was planned on the effect of salicylic acid and plant growth promoting rhizobacteria on morphological changes under drought conditions was designed under complete randomized design with four sorghum varieties i.e., HC- 136, HC- 171, HC 308 and HJ 541 at the botanical garden of department of Botany, Baba Mastnath University, Rohtak. Application of PGPR induced the mean days to physiological maturity at 30 mg L-1salicylic acid was 125.5 and 40mg L-1 salicylic acid was 122.75 whereas 50mg L-1salicylic acid was 120 under drought condition. Application of salicylic acid and drought with PGPR found statistically significant for mean days to flag leaf visibility, root and stem fresh and dry weight, physiological maturity and plant height at 5% of CD level whereas interaction between treatment and genotype was also found significant. Genotype HC136 had maximum mean days to flag leaf visibility, root and stem fresh and dry weight, plant height and physiological maturity, whereas HJ541, and HC 308 had minimum for tested parameters. Genotype HC136 and 50mg L-1salicylic acid concentration further recommended for more study under salinity condition and future research activity.

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