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Effects of some stress modulators and organic fertilizers on dry matter remobilization and grain filling components of barley (Hordeum vulgare L.) under salinity stress
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Sara Mohammadi kale sarlo   , Raouf Seyd sharifi * |
| Plant Production Engineering and Genetics, Faculty of Agriculture and Natural Resources, Mohaghegh Ardabili University |
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Abstract: (167 Views) |
In order to evaluate the effects of organic fertilizers and stress modulators (vermicompost, mycorrhiza, putresin and nano zinc oxide) on dry matter remobilization and grain filling components of barley (Hordeum vulgare L.) under salinity stress, an experimental as factorial was conducted based on randomized complete block design with three replications at the research greenhouse of University of Mohaghegh Ardabili during 2022. The experimental factors were included salinity at three levels (no application of salinity as control, 40 and 80 mM by NaCl), application of bio-organic fertilizers in four levels (no application as control, application of vermicompost, Mycorrhiza, both application of vermicompost and Mycorrhiza), foliar application of putrescine and nano zinc oxide in four levels (foliar application with water as control, foliar application of nano zinc oxide 0.4 g.L-1, putrescine 0.8 mM, both foliar application with zinc and putrescine). The results showed that in the highest salinity level, application of stress modulator (vermicompost, mycorrhizal, putrescine and nano zinc oxide) decreased dry matter remobilization from shoot and stem (21.9% and 24.8% respectively) and their contribution in grain yield (64.1% and 68.4%, respectively) in compared to the no application of biofertilizers, putrescine and zinc. Also, application of stress modulator at the highest salinity level increased leaf area index (79.3%) total chlorophyll (25.7%), current photosynthesis (94.4%), contribution of current photosynthesis in grain yield (44.9%), maximum of grain weight and grain filling rate (46.8 and 15.7% respectively), and grain yield (34.2%) in compared to the no application of stress modulators and organic fertilizers at the same level of salinity. Therefore, with considering of the results of this study, it can be suggested that applying of stress modulators can increase the grain yield of barley under salinity stress conditions by improving the current photosynthesis and grain filling components.
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| Keywords: Current photosynthesis, foliar application, Nano fertilizer. Total chlorophyll. |
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Full-Text [PDF 775 kb]
(191 Downloads)
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Type of Study: Research |
Subject:
Crop Physiology
Received: 2024/09/6 | Accepted: 2024/11/30 | Published: 2024/11/30
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