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Effect of soil salinity on grain yield and sodium and potassium concentrations in different organs of rice plant inoculated with Pseudomonas and Mycorrhiza under field conditions
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Mohammad Hossein Ansari *   |
| Islamic Azad University, Rasht Branch |
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Abstract: (496 Views) |
| A two-year field experiment was conducted in flooded rice fields of Islamic Azad University, Astara Branch in 2018-2019. Experiments in the form of randomized complete blocks in two places (in saline and normal soils) and experimental treatments including inoculation with plant growth-promoting microorganisms at five levels (Pseudomonas putida; Pseudomonas fluorescent; Arbuscular mycorrhiza; P. putida + P. fluorescent + mycorrhiza; as well as a non-inoculation treatment as a control). The results of the combined analysis showed that the effect of microorganisms and soil salinity on sodium (Na+) and potassium (K+) concentrations of roots, stems, young and old leaves, and yield and yield components were significant. Soil salinity increased Na+ concentrations in roots, stems, young and old leaves, while microorganisms significantly decreased Na+ concentrations in all organs except roots and increased K+ concentrations in them, especially in young leaves. Also, microorganisms increased rice grain yield in normal soil by 34% -25% in the first year and 67% -21% in the second year and in saline soil by 45% -22% in the first year and 67% -45% in the second year compared to the treatment. Witnesses increased. Among microorganisms, except P. putida, other microorganisms showed significant superiority over control in most of the measured traits. In general, P. fluorescens + AM fungi + P.putida inoculation is recommended for rice cultivation in saline soils of northern Iran. |
Article number: 4 |
| Keywords: Rice, potassium, sodium, Soil beneficial microorganisms |
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Full-Text [PDF 1668 kb]
(541 Downloads)
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Type of Study: Research |
Subject:
Ecophysiology
Received: 2020/12/7 | Accepted: 2022/09/1 | Published: 2022/09/1
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