Comparative assessment of onion seed longevity under ambient storage and artificial ageing conditions

Published

2023-12-30

DOI:

https://doi.org/10.58993/ijh/2023.80.4.12

Keywords:

Allium cepa L.,, ageing, accelerated ageing, seed storability, germination, vigour
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Authors

  • Narender Pal PhD scholar
  • Sandeep Kumar Lal Division of Seed Science and Technology, ICAR-IARI, New Delhi
  • Sudipta Basu Division of Seed Science and Technology, ICAR-IARI, New Delhi
  • Anil Khar Division of vegetable science, ICAR-Indian Agricultural Research Institute, New Delhi 110
  • Anjali Anand Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi 110012
  • Shailendra Kumar Jha Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012
  • Vishwanath Yalamalle Division of Seed Science and Technology, ICAR-IARI, New Delhi, 110012

Abstract

A study was carried out to assess the storage potential of onion genotypes under natural and accelerated
ageing conditions. Freshly harvested seeds of thirty onion genotypes were stored in ambient conditions for
nine months and subjected to accelerated ageing for 3 and 6 days (42°C and 75% RH). Significant effects of
seed ageing on germination per cent, seed vigour index, mean germination time and germination index were
recorded. Germination per cent ranged from 56.0- 96.0 in control seeds, which declined to 31.0-82.0 and 18.0-
83.0 per cent, respectively, at ambient conditions (9 months) and accelerated ageing treatments (6 days). In the
current study, the seed germination and vigour indices decreased significantly, whereas the mean germination
time increased for all the genotypes under both conditions. Further, cluster analysis was done to categorize
the onion genotypes into good or poor storers. A significant and positive correlation was found among both
natural and artificial ageing treatments. The study facilitated the categorization of onion genotypes into distinct
seed longevity groups.

How to Cite

Pal, N., Lal, S. K., Basu, S., Khar, A., Anand, A., Jha, S. K., & Yalamalle, V. (2023). Comparative assessment of onion seed longevity under ambient storage and artificial ageing conditions. Indian Journal of Horticulture, 80(04), 377–384. https://doi.org/10.58993/ijh/2023.80.4.12

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