Document Type : Original Article
Authors
1
Assistant Professor, Department of Agronomy, Faculty of Agriculture, Guilan University, Iran.
2
M.Sc. Student, Department of Agronomy, Faculty of Agriculture, Guilan University, Iran.
3
Chief of Rice Researches Institute
4
M. Sc. of Biology, Department of Biology, University of Abu-Ali Sina, Hamedan, Iran
Abstract
Effect of seed inoculation with Pseudomonas fluorescens strains on quantitative and qualitative indices of two rice cultivars (Oryza sativa L.)[1]
Seyed Mohammadreza Ehteshami1*, Zahra Amindeldar2, Abbas Shahdi Kumleh3, Hassan Ramezani4
1- Assistant Professor, Department of Agronomy, Faculty of Agriculture, Guilan University, Iran.
2- M.Sc. Student, Department of Agronomy, Faculty of Agriculture, Guilan University, Iran.
3-Chief of Rice Researches Institute
4- M. Sc. of Biology, Department of Biology, University of Abu-Ali Sina, Hamedan, Iran.
*Corresponding author: smrehteshami@yahoo.com
Received: 2013.02.13 Accepted: 2014.07.08
Abstract
To evaluate the effect of growth promoting bacteria on quantitative and qualitative indices of two rice cultivars, an experiment was performed in 2009-2010 cropping season in Rice Researches Institute of Iran, Rasht. The experiment design consisted of four randomized complete blocks in a factorial arrangement having 16 treatments. In this research, two factors were evaluated: rice cultivars (Khazar and Hashemi) and eight levels of seed inoculation with P.fluorescens [strains of 168, 93, 177, 136, 103, 169, 4 and without seed inoculation. In this experiment, effect of both cultivar and effect of bacteria were significant for the most of studied characteristics, but effect of cultivar in bacteria wasn’t significant. The results of experiment showed that inoculation with bacterial strains had a stimulating effect on growth of rice cultivars. In this experiment, Khazar had positive effect on the most of studied characteristics in comparison with Hashemi. Application of these microorganisms increased the content of N, P, K, Ca and Fe in plant, but didn’t influence Mg adsorption. Between bacterial different strains, seed inoculation with 168, 177 and 93 strains increased evaluated characteristics significantly, compared with other strains. Results showed that these microorganisms can interact positively in plant growth promoting, As well as nutrients uptake of rice plants in soil especially P that consequently, leading to improved plant yield and dry weight.
Key Words:PGPR, Quantitative and qualitative characteristics, Phosphorus,weight dry
[1]. This paper is exploited of M.Sc. Thesis in Agronomy.
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