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Volume 01, Issue 01      January-March, 2013

Co-inoculation with Rhizobium and plant growth promoting rhizobacteria (PGPR) for inducing salinity tolerance in mung bean under field condition of semi arid climate
 

Muhammad Aamir1, Ana Aslam1, Muhammad Yahya Khan1, Muhammad Usman Jamshaid1, Maqshoof Ahmad2, Hafiz Naeem Asghar1* and Zahir Ahmad Zahir1
1 Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
2 University College of Agriculture & Environmental Sciences, The Islamia University of Bahawalpur, Pakistan

*Corresponding author: e-mail: naeemasghar@yahoo.com

Abstract

Salinity stress severely affects the growth, nodulation and yield of mung bean (Vigna radiata L.). However, its growth can be improved under salinity stress by inoculation/co-inoculation with rhizobia and plant growth promoting rhizobacteria (PGPR) containing 1-Aminocyclopropane-1-carboxylic acid (ACC) deaminase enzyme. ACC-deaminase containing bacteria regulate the stress induced ethylene production by hydrolyzing the ACC (immediate precursor of ethylene) into ammonia and ketobutyric acid, thus improve plant growth by lowering the ethylene level. A study was conducted under salt affected field conditions where pre-isolated strains of Rhizobium and PGPR were used alone as well as in combination for mitigating the salinity stress on growth, nodulation and yield of mung bean by following the randomized complete block design (RCBD). The data were recorded and analyzed statistically to see the difference among treatments.

Keywords: ACC-deaminase, salt stress, rhizobia, legume, Vigna radiata L.

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