4.2 Article

Evaluation of Germination and Antioxidant Activity in GA3-Primed Deteriorated Wheat Seed

Journal

RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
Volume 66, Issue 6, Pages 958-965

Publisher

PLEIADES PUBLISHING INC
DOI: 10.1134/S1021443719060025

Keywords

Triticum aestivum; antioxidant assay; ascorbate peroxidase; seed deterioration; superoxide dismutase

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Funding

  1. Islamic Azad University of Damghan, Iran [956/1395/2/25]

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Seed aging or deterioration is considered as one of the seed capacity reducing factors and limiting seed germination, hence, realizing the effective physiological factors on seed deterioration is very important. In order to study the germination indices and enzymatic and non-enzymatic antioxidants in wheat (Triticum aestivum L. cv. Pishtaz) seed as affected by accelerated seed aging and gibberellic acid (GA(3)) priming, a laboratory experiment was conducted in Ferdowsi University of Mashhad, Mashhad, Iran, during 2017-2018. For this purpose, different levels of seed aging (100% relative humidity at 40 degrees C for 4, 6 and 7 days, respectively) and GA(3)-primed seeds (0, 25, 50 and 100 mg/L) were the first and second experimental factors, respectively. The results indicated that seed germination percentage and indices, superoxide dismutase and ascorbate peroxidase activities, vitamin E, glutathione and ascorbic acid contents were reduced with severe deterioration, compared with low deterioration, whereas, the mentioned traits were improved by increasing the levels of GA(3) seed priming. Overall, the results of this experiment suggest that the GA(3)-primed seed can be an effective approach to improve the seed germination and seedling growth in wheat under aging conditions.

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