Efficiency of phytoprotectants and phosphorus solubilizing bacteria in modulating of water deficit effects on wheat

Document Type : Research Paper

Authors

1 Dept. of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, Urmia University, Urmia, Iran.

2 Agronomy department- agriculture college- Urmia University

3 Department of Agronomy and plant breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili.

10.22034/saps.2024.58381.3114

Abstract

Field studies were carried out for two years at the research farm of the Faculty of ‎Agriculture‏ ‏and Natural Resources, University of Mohaghegh Ardabili. Experiment was conducted as a split plot ‎factorial based on randomized complete block design with three replications. The main factor included drought ‎stress at three levels [irrigation at 80% of field capacity (no stress), irrigation at 65% of field capacity (moderate ‎stress) and irrigation at 50% of field capacity (severe stress)]. Sub factor was combination of external ‎phytoprotectants application at five levels [Distilled water as control, Ascorbic acid (1 mM), Tocopherol (1 mM) ‎‎, Silicon (1 mM) and Zinc NPS (1 mM) and inoculation with phosphorus-solubilizing bacteria at two levels (with ‎and without inoculation)]. ‎
The severe water limitation (50% field capacity) compared to non-stress conditions (irrigation at 80% ‎field capacity), led to a significant decrease in wheat yield and yield components. However, the application of ‎organic (ascorbic acid and tocopherol) and mineral (silicon and zinc NPS) phytoprotectants, as well as ‎inoculation with phosphorus-solubilizing bacteria were significant on Chl a, Chl b content and also, leaf area ‎index and increment of the effective compounds in plant tolerance under stress conditions such as carotenoieds, ‎prolin and slouble sugars. under the severe water limitation, ‎application of stress modulators increased grain yield 28, 18.2, 17.3 and 9.3% in compared to no application of ‎stress modulators at the same level of irrigation‎

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JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION

Articles in Press, Accepted Manuscript
Available Online from 21 October 2024

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