Volume 15, Issue 73 (vol. 15, no. 73 2026)
2026, 15(73): 57-64 |
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Javid S, Naeemi M, Nakhzari Moghadam A, Ahmadi-Ochtapeh H. Enhanced drought tolerance in Camelina (Camelina sativa L.) through foliar application of salicylic acid and putrescine: Physiological and biochemical changes. Plant Process and Function 2026; 15 (73) : 6
URL: http://jispp.iut.ac.ir/article-1-2264-en.html
URL: http://jispp.iut.ac.ir/article-1-2264-en.html
1- Department of Crop Productions, Faculty of Agricultural and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Golestan, Iran
2- Department of Crop Productions, Faculty of Agricultural and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Golestan, Iran ,naeemi_701@yahoo.com
3- Crop and Horticultural Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
2- Department of Crop Productions, Faculty of Agricultural and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Golestan, Iran ,
3- Crop and Horticultural Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
Abstract: (43 Views)
Water limitation is a major constraint to crop productivity in semi-arid regions, particularly under rainfed agricultural systems where irregular precipitation limits plant growth during critical developmental stages. This study evaluated the interactive effects of foliar application of putrescine (0, 1, 2, and 3 mM) and salicylic acid (0, 1, 2, and 3 mM) on physiological, biochemical, and yield-related traits of camelina (Camelina sativa L.) grown under rainfed conditions. Compared with untreated plants, the combined application of putrescine and salicylic acid significantly improved physiological performance under limited soil moisture availability. Total chlorophyll, chlorophyll a, and carotenoid contents increased substantially (up to approximately 60–70%), indicating improved stability of the photosynthetic apparatus. Soluble sugar content increased by about 51%, reflecting enhanced osmotic adjustment and carbon metabolism. Proline accumulation showed a dose-dependent response, with moderate increases (up to 73%) indicating adaptive metabolic regulation rather than stress injury. Antioxidant defense was markedly enhanced, as activities of ascorbate peroxidase, catalase, and peroxidase increased significantly, with ascorbate peroxidase showing the strongest response. Grain yield was significantly enhanced under combined treatments, reflecting improved photosynthetic efficiency, metabolic balance, and assimilate partitioning rather than simple growth stimulation. Overall, the coordinated application of putrescine and salicylic acid effectively enhanced physiological resilience and yield performance of camelina under rainfed conditions. These findings highlight the potential of elicitor-based management strategies to improve crop productivity in semi-arid environments experiencing increasing water limitations.
Article number: 6
Type of Study: Research |
Subject:
Droughts Stress
Received: 2025/10/2 | Accepted: 2026/02/3 | Published: 2026/07/27
Received: 2025/10/2 | Accepted: 2026/02/3 | Published: 2026/07/27
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