Physiology and Molecular Biology of Plants

, Volume 19, Issue 4, pp 515–519 | Cite as

Plant growth stimulation of wheat (Triticum aestivum L.) by inoculation of salinity tolerant Azotobacter strains

  • Deepika Chaudhary
  • Neeru Narula
  • S. S. SindhuEmail author
  • R. K. Behl
Research Article


Five salinity tolerant Azotobacter strains i.e., ST3, ST6, ST9, ST17 and ST24 were obtained from saline soils. These Azotobacter strains were used as inoculant for wheat variety WH157 in earthen pots containing saline soil under pot house conditions, using three fertilizer treatment doses i.e., control (no fertilizer, no inoculation), 90 Kg N ha−1 and 120 Kg N ha−1. Inoculation with salinity tolerant Azotobacter strains caused significant increase in total nitrogen, biomass and grain yield of wheat. Maximum increase in plant growth parameters were obtained after inoculation with Azotobacter strain ST24 at fertilization dose of 120 kg N ha−1 and its inoculation resulted in attaining 89.9 cms plant height, 6.1 g seed yield, 12.0 g shoot dry weight and 0.7 % total nitrogen. The survival of Azotobacter strain ST24 in the soil was also highest in all the treatments at 30, 60 and 90 days after sowing (DAS). However, the population of Azotobacter decreased on 90 DAS as compared to counts observed at 60 DAS at all the fertilization treatments.


Azotobacter Wheat Salinity tolerance Plant height Shoot dry weight Seed yield 


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Copyright information

© Prof. H.S. Srivastava Foundation for Science and Society 2013

Authors and Affiliations

  • Deepika Chaudhary
    • 1
  • Neeru Narula
    • 1
  • S. S. Sindhu
    • 1
    Email author
  • R. K. Behl
    • 1
  1. 1.Department of Microbiology, College of Basic Sciences & HumanitiesCCS Haryana Agricultural UniversityHisarIndia

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