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Agronomy
Volume 11
Issue 11
10.3390/agronomy11112194
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Review

Osmopriming with Polyethylene Glycol (PEG) for Abiotic Stress Tolerance in Germinating Crop Seeds: A Review

by
Chu Lei
1,
Muthukumar Bagavathiannan
2,
Huiyong Wang
1,
Shaun M. Sharpe
3,
Wenting Meng
1 and
Jialin Yu
2,*
1
Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
2
Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA
3
Saskatoon Research and Development Centre, Science and Technology Branch, Agriculture and Agri-Food Canada/Government of Canada, Saskatoon, SK S7N 0X2, Canada
*
Author to whom correspondence should be addressed.
Agronomy 2021, 11(11), 2194; https://doi.org/10.3390/agronomy11112194
Submission received: 29 September 2021 / Revised: 25 October 2021 / Accepted: 27 October 2021 / Published: 30 October 2021
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Abstract

Abiotic stresses such as drought, extreme temperature, and salinity can negatively impact seed germination and plant growth and have become major limitations to crop production. Most crops are vulnerable to abiotic stress factors during their early growth phase, especially during seed germination and seedling emergence. Rapid crop seed germination and seedling establishment is known to provide competitive advantages over weeds and improve yields. Seed osmopriming is defined as a pre-sowing treatment in which seeds are soaked in osmotic solutions to undergo the first stage of germination, but radicle protrusion has not occurred. The process of osmopriming involves prior exposure of seeds in low-water-potential solutions. Osmopriming can generate a series of pre-germination metabolic activities, increase the antioxidant system activities, and prepare the seed for radicle protrusion. Polyethylene glycol (PEG) is a popular osmopriming agent that can alleviate the negative impacts of abiotic stresses. This review summarizes research findings on crop responses to seed priming with PEG under abiotic stresses. The challenges, limitations, and opportunities of using PEG for crop seed priming are discussed with the goal of providing insights into future research towards effective application of seed priming in crop production.
Keywords: abiotic stress; drought stress; temperature stress; salinity stress; seed germination; seed priming abiotic stress; drought stress; temperature stress; salinity stress; seed germination; seed priming

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MDPI and ACS Style

Lei, C.; Bagavathiannan, M.; Wang, H.; Sharpe, S.M.; Meng, W.; Yu, J. Osmopriming with Polyethylene Glycol (PEG) for Abiotic Stress Tolerance in Germinating Crop Seeds: A Review. Agronomy 2021, 11, 2194. https://doi.org/10.3390/agronomy11112194

AMA Style

Lei C, Bagavathiannan M, Wang H, Sharpe SM, Meng W, Yu J. Osmopriming with Polyethylene Glycol (PEG) for Abiotic Stress Tolerance in Germinating Crop Seeds: A Review. Agronomy. 2021; 11(11):2194. https://doi.org/10.3390/agronomy11112194

Chicago/Turabian Style

Lei, Chu, Muthukumar Bagavathiannan, Huiyong Wang, Shaun M. Sharpe, Wenting Meng, and Jialin Yu. 2021. "Osmopriming with Polyethylene Glycol (PEG) for Abiotic Stress Tolerance in Germinating Crop Seeds: A Review" Agronomy 11, no. 11: 2194. https://doi.org/10.3390/agronomy11112194

APA Style

Lei, C., Bagavathiannan, M., Wang, H., Sharpe, S. M., Meng, W., & Yu, J. (2021). Osmopriming with Polyethylene Glycol (PEG) for Abiotic Stress Tolerance in Germinating Crop Seeds: A Review. Agronomy, 11(11), 2194. https://doi.org/10.3390/agronomy11112194

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