AN EVALUATION OF THE INFLUENCE OF PGPR ON WHEAT GROWTH INDICES UNDER SALINE STRESS

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SAGHAFI K.; AHMADI J.; ASGHAR ZADEH A.; ESMAILIZAD A.

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Journal: Journal of Soil Biology Year:2013 | Volume:1 | Issue:1 Page(s): 47-59

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Title

AN EVALUATION OF THE INFLUENCE OF PGPR ON WHEAT GROWTH INDICES UNDER SALINE STRESS

Author(s)

SAGHAFI K. | AHMADI J. | ASGHAR ZADEH A. | ESMAILIZAD A. | Issue Writer Certificate

Keywords

AZOSPRILLIUMQ2

AZOTOBACTERQ2

PSEUDOMONASQ2

MORPHOLOGIC TRAITQ1

SALT STRESSQ3

Abstract

Given the expanding trend of saline lands and the insufficiency of suitable fields for agricultural purposes, it is important to identify ways for increasing plant resistance to salinity. Using plant growth promoting rhizobacteria (PGPR) is one such approach. The following study aimed to analyze the effects of different PGPR bacteria and their combination on two wheat cultivars. The experiment was carried out using a randomized factorial design with three replications. The factors used included SALT STRESS at three different levels (0.335 dS.m-1 (control), 6 dS.m-1, and 14 dS.m-1 electrical conductivity of water). The second factor consisted of 8 biological treatments of PGPR as follows: 1-(without bacteria (control), 2-(AZOSPRILLIUM lipoferum of), 3-Azotobacter choococcum 5), 4-(Pseudomonas fluorescens 169), 5-(AZOSPRILLIUM lipoferum of + AZOTOBACTER choococcum 5),6-(AZOSPRILLIUM lipoferum of + PSEUDOMONAS-fluorescens169), 7-(Azotobacter choococcum 5+Pseudomonas fluorescens-169),8-(AZOSPRILLIUM lipoferum of+Azotobacter choococcum 5+Pseudomonas fluorescens 169). The experiment was carried out in the Soil and Water Research Institute greenhouse using a sand culture method. The two wheat cultivars used in the study included Kavir (resistant to salinity) and Qods (sensitive to salinity). Results showed that saline stress had a significant effect on the growth parameters related to the plant root and aerial organs (p<0.01). It was observed that an increase in the amount of salinity in the irrigation water led to a decrease in the average of the traits mentioned (p<0.01). Also, results showed that PGPR bacteria, especially those composed of different species had a positive impact under SALT STRESS. Overall, most growth traits displayed a higher average in the case of seeds that had been inoculated with a combination of different bacteria. According to the results, these bacteria had positive effects on increasing growth parameters in the sensitive cultivar. The results obtained also pointed to a positive and significant influence for PGPR bacteria under SALT STRESS and indicated that under different levels of salinity, inoculating seeds with the selected bacteria would lead to a reduction of the salinity-induced growth-retarding effects in the traits being studied. The PGPR bacteria were also able to significantly improve the plants' growth parameters under SALT STRESS.

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APA: Copy

SAGHAFI, K., AHMADI, J., ASGHAR ZADEH, A., & ESMAILIZAD, A.. (2013). AN EVALUATION OF THE INFLUENCE OF PGPR ON WHEAT GROWTH INDICES UNDER SALINE STRESS. JOURNAL OF SOIL BIOLOGY, 1(1), 47-59. SID. https://sid.ir/paper/241377/en

Vancouver: Copy

SAGHAFI K., AHMADI J., ASGHAR ZADEH A., ESMAILIZAD A.. AN EVALUATION OF THE INFLUENCE OF PGPR ON WHEAT GROWTH INDICES UNDER SALINE STRESS. JOURNAL OF SOIL BIOLOGY[Internet]. 2013;1(1):47-59. Available from: https://sid.ir/paper/241377/en

IEEE: Copy

K. SAGHAFI, J. AHMADI, A. ASGHAR ZADEH, and A. ESMAILIZAD, “AN EVALUATION OF THE INFLUENCE OF PGPR ON WHEAT GROWTH INDICES UNDER SALINE STRESS,” JOURNAL OF SOIL BIOLOGY, vol. 1, no. 1, pp. 47–59, 2013, [Online]. Available: https://sid.ir/paper/241377/en

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