Influence of multi-strain plant growth promoting rhizobacteria inoculation on wheat crop productivity under soil salinity stress

  • Muhammad Zafar-ul-Hye Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan-60800, Pakistan
  • Tariq Shahzad Bhutta
  • Muhammad Shaaban
  • Shahid Hussain
  • Muhammad Farooq Qayyum
  • Umar Aslam
  • Zahir Ahmad Zahir
Keywords: PGPR;abiotic stress; soil salinity; ethylene; wheat


Soil salinityaffects the growth andyield of crops. The stress of soil salinity on plants can be mitigated by inoculation of plant growth promoting bacteria (PGPR). The influence of PGPRinoculation on wheat (Triticumaestivum L.) crop productivity under salinitystress has not been properly addressed so far. Therefore, the present study was conducted to investigate the effects of various PGPR strains (W14, W10 and 6K; alone and combined) at several growth attributes of wheat plant under different soil salinity gradients (3, 6 and 9 dSm-1). The growth attributes of wheat (height, roots, shoots, spikes, grains quality, biological and economical yield, nutrients N, P and K in grains) were highly affected by salinity and decreased with increasing salinity level. The PGPR inoculation substantially promoted growth attributes of wheat and prominent results were observed in W14×W10×6K treatment at 3dSm-1. The results suggest that inoculation of PGPR is a potential strategy to mitigate salinity stress for improving wheat growth and yield.