Canola Seed Priming and Its Effect on Gas Exchange, Chlorophyll Photobleaching, and Enzymatic Activities in Response to Salt Stress

Waleed Iqbal, Muhammad Zahir Afridi, Aftab Jamal, Adil Mihoub, Muhammad Farhan Saeed, Árpád Székely, Adil Zia, Muhammad Awais Khan, Alfredo Jarma-Orozco and Marcelo F. Pompelli
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Waleed Iqbal: Department of Agronomy, Faculty of Crop Production Sciences, Amir Muhammad Khan Campus Mardan, The University of Agriculture, Peshawar 25130, Pakistan
Muhammad Zahir Afridi: Department of Agronomy, Faculty of Crop Production Sciences, Amir Muhammad Khan Campus Mardan, The University of Agriculture, Peshawar 25130, Pakistan
Aftab Jamal: Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Adil Mihoub: Center for Scientific and Technical Research on Arid Regions, Biophysical Environment Station, Touggourt 30240, Algeria
Muhammad Farhan Saeed: Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
Árpád Székely: Research Centre for Irrigation and Water Management, Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Anna-Liget str. 35, 5540 Szarvas, Hungary
Adil Zia: Department of Agronomy, Faculty of Crop Production Sciences, Amir Muhammad Khan Campus Mardan, The University of Agriculture, Peshawar 25130, Pakistan
Muhammad Awais Khan: Department of Agronomy, Faculty of Crop Production Sciences, Amir Muhammad Khan Campus Mardan, The University of Agriculture, Peshawar 25130, Pakistan
Alfredo Jarma-Orozco: Faculty of Agronomy, University of Córdoba, Montería 230002, Colombia
Marcelo F. Pompelli: Faculty of Agronomy, University of Córdoba, Montería 230002, Colombia

Sustainability, 2022, vol. 14, issue 15, 1-22

Abstract: Canola is the second-largest oil seed crop in the world, providing oil mainly composed of long-chain fatty acids (C14 to C20). When mixed with fossil-diesel, canola-based biofuel can be used in passenger vehicles, trucks, or even in aviation. Canola is the most productive type of biofuel due to its oil’s long-chain and unbranched fatty acid composition, which makes it more fluid. However, canola yields are constrained by drought and salinity that can aggravate climate change, resulting in negative consequences. Therefore, it is becoming necessary for studies that involved the canola salt-tolerant genotypes to consider soil salinization by use of saline soil or salinized soil by a non-efficient irrigation method. This study was carried out to assess the effects of salinity on seed germination and the effect of CaCl 2 (ψ s = −1.2 MPa) on the promotion of regenerated plant memory when a new cycle of stress occurs. Our experiment shows that salt-stressed canola plants resulted in a high reduction in chlorophylls and carotenoids, with a high impact on gas exchange and a reduction in the efficiency of the chloroplast electron chain transporter, producing the negative effect of reduced molecules that affect the membrane integrity. However, canola seed priming could produce a memory in the regenerated plants when the second round of salt stress was applied. This research concludes that canola genotypes appear to have a tolerance mechanism against salt stress which could be an important trait for developing high-yielding canola varieties in future breeding programs under salt stress conditions.

Keywords: multivariate analyses; antioxidant activity; climatic change; biofuel; food security and plant memory; salt tolerance; seed priming (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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