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The effect of biofertilizers and salicylic acid on the changes in the physiological growth indices of two chickpea cultivars under rainfed conditions
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Fardin Momeni   , Alireza Abdali Mashhadi * , Seyed Ataolah Siadat , Babak Pakdaman , Mokhtar Ghobadi |
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Abstract: (16 Views) |
| Chickpea is one of the important pulses with high nutritional value and adaptability, which has the ability to biologically fix atmospheric nitrogen. In this study, the effect of salicylic acid and biofertilizers on the physiological indicators of growth in two chickpea cultivars was investigated. Elicitors such as salicylic acid can reduce the severity of drought stress in some plants. On the other hand, biofertilizers can reduce the consumption of chemical fertilizers and reduce the cost of production and environmental pollution by providing a part of the nutritional needs of plants.This experiment was carried out for two years in 2017 and 2018 at Razi University of Kermanshah under rainfed conditions. The experiment was conducted as a factorial based on a randomized complete block design with three replications. The factors included chickpea cultivars (Bivanij and Azad cultivars), salicylic acid foliar spraying (no application, application of 0.5 and one millimolar concentrations) and biological fertilizer (control, Biosuperphosphate bacteria (Pseudomonas + Enterobacter), Biosulfur bacteria (Thiobacillus spp.), Rhizobium bacterium (Mesorhizobium cicero) and Mycorrhizal fungus (Rhizophagus irregularis) with CFU (Colony Forming Unit)=108). The CGR (Crop Growth Rate), RGR (Relative Growth Rate), NAR (Net Assimilation Rate) and LAI (Leaf Area Index) indices were used to evaluate the effect of experimental factors on chickpea plant growth. The highest TDM, LAI, CGR, RGR and NAR were observed in 0.5 millimolar concentration of salicylic acid and Bivanij variety. The highest TDM, LAI, CGR and NAR were observed in Mesorhizobium ciceri and Rhizophagus irregularis biofertilizers. In Mesorhizobium ciceri biofertilizer, the highest TDM, LAI, CGR, and NAR were 41, 9, 72, and 39% higher in the first year and 39, 5, 61, and 4% higher in the second year than the control, respectively. Biofertilizers had little effect on RGR. The trend of NAR changes under the effect of cultivar factors, salicylic acid and biofertilizers was very different in the first and second years of the experiment. In general, among the experimental factors levels, the cultivar Bivanij, the 0.5 millimolar concentration of salicylic acid and the Mesorhizobium ciceri biofertilizer had the highest growth indices. |
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| Keywords: Biosuperphosphate, CGR, LAI, Mycorrhizal, Rhizobium |
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Full-Text [PDF 674 kb]
(23 Downloads)
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Type of Study: Research |
Subject:
Crop Physiology
Received: 2024/08/15 | Accepted: 2023/11/1 | Published: 2023/11/1
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