Progressive Horticulture
  • Year: 2011
  • Volume: 43
  • Issue: 1

Potential of indigenous strains of Pseudomonas and Bacillus species for the production of plant growth regulators, viz., Auxins, Gibberellins and Cytokinins from carnation and medicinal plants

  • Author:
  • Mohinder Kaur, Sanjeev , Sapna Sharma, Vishal Rana, Girish Sharma
  • Total Page Count: 5
  • Page Number: 56 to 60

*Department of Basic Sciences (Microbiology), Dr. Y S Parmar University of Horticulture and Forestry Nauni, Solan-173 230, (Himachal Pradesh)

**Deptt. of Fruit Sciences, Dr. Y S Parmar University of Horticulture and Forestry Nauni, Solan-173 230, (Himachal Pradesh) Email: mohinderkaur@gmail.com

Abstract

Nine strains of fluorescent Pseudomonas sp. and eleven strains of Bacillus sp. isolated from the rhizosphere of carnation and medicinal plants i.e., Achyranthes aspera, Elaeagnus umbellata and Heracleum candicans were screened out for the production of plant growth regulators, viz. auxins, gibberellins and cytokinins. All the strains produce the plant growth regulators but the level of production varies in each strain. The maximum production of each plant growth regulators was observed in Pseudomonas sp. MC and PS-II at 30oC and Bacillus sp. UF2 and KN6 at 37oC in nutrient broth, pH 7.0 under shake conditions (90 rpm) for 72 hour. The present study was carried out to explore the potential of PGPR strains for the production of growth regulators which can help in growth promotion of plants.

Keywords

Auxins, Bacillus sp, Cytokinins, Fluorescent, Gibberellins, Plant growth regulators, Pseudomonas sp