Changes in Antioxidant Enzymes during Ageing of Onion Seeds

Mustafa DEMIRKAYA; Karl Josef DIETZ; H. Ozkan SIVRITEPE

doi:10.15835/nbha3814575

Changes in Antioxidant Enzymes during Ageing of Onion Seeds

Authors

Mustafa DEMIRKAYA Erciyes University, Department of Agriculture, Safiye Çıkrıkçıoğlu Vocational College, Kayseri 38039 (TR)
Karl Josef DIETZ Universität Bielefeld, Biochemistry and Physiology of Plants, W5, 33501 Bielefeld (DE)
H. Ozkan SIVRITEPE Uludag University (TR)

DOI:

https://doi.org/10.15835/nbha3814575

Abstract

Onion seed viability during storage and drying declines with genotype specificity. Changes in antioxidant enzymes at different viability levels were investigated in seeds of the three onion cultivars Akg-12, Valencia and TEG-502. For this purpose, 95, 80, 60, 40 and 20% viability levels were obtained by the use of controlled deterioration treatments in seeds of each onion cultivar. Subsequently, catalase (CAT), peroxidase (POX) and superoxide dismutase (SOD) activity measurements were conducted at these viability levels. POX activity was below detection limit in aged onion seeds. The activities of CAT and SOD decreased due to seed ageing in each cultivar. The decreases observed in CAT and SOD activities were more evident when seed viability decreased below 60% level. Moreover, a high level of correlation was found between loss of seed viability and the decreases occur in CAT and SOD activities, in seeds of each onion cultivar.

Author Biographies

Karl Josef DIETZ, Universität Bielefeld, Biochemistry and Physiology of Plants, W5, 33501 Bielefeld

Professor of Biology Department of Physiology and Biochemistry of Plants Seed physiology and technology, Plant biochemistry

H. Ozkan SIVRITEPE, Uludag University

Professor of Horticulture Seed physiology and technology, Vegetable seed production, Vegetable growing

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Published

2010-06-15

How to Cite

DEMIRKAYA, M., DIETZ, K. J., & SIVRITEPE, H. O. (2010). Changes in Antioxidant Enzymes during Ageing of Onion Seeds. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 38(1), 49–52. https://doi.org/10.15835/nbha3814575

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Issue

Vol. 38 No. 1 (2010)

Section

Research Articles

CITATION

DOI: 10.15835/nbha3814575

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License:

© Articles by the authors; licensee UASVM and SHST, Cluj-Napoca, Romania. Papers published in the journal Notulae Botanicae Horti Agrobotanici Cluj-Napoca are open access distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses).

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