Seed Priming Treatments to Improve Heat Stress Tolerance of Garden Pea ( Pisum sativum L.)

Gordana Tamindžić (), Maja Ignjatov, Dragana Miljaković, Janko Červenski, Dragana Milošević, Zorica Nikolić and Sanja Vasiljević
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Gordana Tamindžić: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia
Maja Ignjatov: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia
Dragana Miljaković: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia
Janko Červenski: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia
Dragana Milošević: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia
Zorica Nikolić: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia
Sanja Vasiljević: Institute of the Field and Vegetable Crops, the National Institute of the Republic of Serbia, 21000 Novi Sad, Serbia

Agriculture, 2023, vol. 13, issue 2, 1-15

Abstract: Heat stress seriously affects the production of cool-season food legume crops such as garden peas. Seed priming is a widely used technique that increases germination and improves plant growth and development, resulting in better field performance and higher yield of crops. In the current study, we investigated three seed priming treatments—hydropriming (dH 2 O), osmopriming (2.2% w / v CaCl 2 ), and hormopriming (50 mg L −1 salicylic acid—SA)—and their effect on germination, initial seedling development, and physiological traits of two novel garden pea cultivars, under optimal conditions and heat stress. Seed priming with H 2 O, CaCl 2, and SA enhanced garden pea performance under both optimal and stress conditions via significant improvements in germination energy, final germination, mean germination time, mean germination rate, seedling vigor index, shoot length, root length, fresh seedling weight, dry seedling weight, shoot elongation rate, root elongation rate, relative water content, chlorophyll content, and membrane stability index, as compared to control. The highest effect on the examined parameters was achieved by osmopriming and hormopriming in both cultivars, suggesting that these treatments could be used to improve the heat stress tolerance of garden pea, after extensive field trials.

Keywords: Seed quality; germination performance; priming treatments; hydropriming; CaCl 2; salicylic acid; optimal conditions; heat stress (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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