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Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 10 | Page No.: 1556-1559
DOI: 10.3923/pjbs.2000.1556.1559
Isolation of Rhizobacteria from Different Rapeseed Varieties and Their Potential for Auxin Production
Hafiz Naeem Asghar , Zahir Ahmad Zahir , Abdul Khaliq and Muhammad Arshad

Abstract:
Rhizobacteria were isolated from rhizosphere of different varieties of rapeseed (Canola, Raya, Toria, Gobi Sarsoon and Sarsoon) selected from different sites of Punjab. These rhizobacteria were tested for auxin production in terms of indoleacetic acid equivalents by colorimeter method both in the presence and absence of an auxin precursor L-tryptophan (L-TRP). This study suggested that auxin production ability varied with variety and site ranging from 0.13 to 11.4 μg mL-1 without L-TRP and from 2.41 to 24.6 μg mL -1 with L-TRP. L-Tryptophan application increased the auxin production upto 184 fold compared with that produced without L-TRP. The significance of auxin production by rhizobacteria is discussed in relation to their effects on plant growth.
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How to cite this article:

Hafiz Naeem Asghar , Zahir Ahmad Zahir , Abdul Khaliq and Muhammad Arshad , 2000. Isolation of Rhizobacteria from Different Rapeseed Varieties and Their Potential for Auxin Production . Pakistan Journal of Biological Sciences, 3: 1556-1559.

DOI: 10.3923/pjbs.2000.1556.1559

URL: http://scialert.net/abstract/?doi=pjbs.2000.1556.1559

 
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