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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 6
First page : (644) Last page : (652)
Article doi: :

Evaluation of PGPR Isolates for Plant Growth Promotion and Yield Enhancement of Groundnut Crop

Arti Thakur1* and Samir C. Parikh2

1Ph.D. Student, 2Principal,
Smt. S. M. Panchal, Science College, Talod,
Affiliated to Hemchandracharya North Gujarat University, Patan, Gujarat, India
*Corresponding Author E-mail:
Received: 17.03.2018  |  Revised: 26.04.2018   |  Accepted: 3.05.2018  



The study was carried out to evaluate the five previously isolated and PGPR screened; efficient and multitrait rhizobacterial isolates GSP 4, GST 3, GSB 13, GSH 1 and GSV 3 under pot study and field application. Promising results was obtained under pot application of five efficient isolates in term of increased shoot length (21.50 cm to 14.22 cm), root length (9.70 cm to 13.32 cm) and dry weight (13.10 g to 18.52 g) of groundnut plants compared to control. Further the field application of three most promising isolates GSH 1, GSB 13 and GST 3, singly and in combination also showed a significant enhancement of the groundnut crop growth and yield. Maximum increase in the plant growth was observed with treatment T 4, which is the consortium of three efficient isolates. On 16s rRNA sequence analysis the three efficient isolates were identified as Enterobacter cloacae (GST 3), Burkholderia cepacia (GSH 1) and Burkholderia cenocepacia (GSB 13). The study showed the exploitation of the groundnut plant associated rhizobacteria as biofertilizer. Further this study illustrated the advantage of co-inoculation technique involving the synergism over single inoculation for batter performance under field application to bring enhanced improvement in crop productivity with sustainability.

Key words: Rhizosphere, Plant growth promoting rhizobacteria, Co-inoculation, Enhanced crop production.

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Cite this article: Thakur, A. and Parikh, S.C., Evaluation of PGPR Isolates for Plant Growth Promotion and Yield Enhancement of Groundnut Crop, Int. J. Pure App. Biosci.6(6): 644-652 (2018). doi: