Assessment of Natural Ageing Related Physio-Biochemical Changes in Onion Seed

Navjot Singh Brar, Prashant Kaushik and Bagrawat Singh Dudi
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Navjot Singh Brar: Department of Vegetable Science, Punjab Agricultural University, Ferozepur Road, Ludhiana 141027, India
Prashant Kaushik: Independent Researcher, 46022 Valencia, Spain
Bagrawat Singh Dudi: Department of Vegetable Science, CCS Haryana Agricultural University, Main Road, Hisar 125004, India

Agriculture, 2019, vol. 9, issue 8, 1-0

Abstract: This research was performed for a period of three years to determine the effect of natural seed ageing on different physiological and biochemical changes in three extensively cultivated onion cultivars in Northern India. Seed storage studies showed that germination percent, seed viability and other seed quality parameters decreased significantly with increasing storage time. The onion seed can be stored for a maximum period of one year under ambient conditions to maintain required germination percentage (>70%). Overall, Hisar Onion-4 stored better when compared to Hisar Onion-3 and Hisar-2. As the ageing progressed the seed antioxidants, namely superoxide dismutase (SOD), catalase (CAT), dehydrogenase (DHA) and peroxidase (POD) decreased significantly ( p < 0.05) in all cultivars whereas, the electrical conductivity (EC) of seed leachates increased significantly. Under the field conditions, seedling establishment percent (SE) onion seed was positively correlated (R 2 = 0.98; p < 0.05) with germination percent (GP). Overall, more than one year period of seed storage was associated with poor germination and seedling establishment potential in onion.

Keywords: ageing; antioxidants; germination; onion; seed storage (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: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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