The storage period of onion seeds is:

Correct option is B

The storage period of onion seeds is approximately 1 year under proper storage conditions. After this period, seed viability and germination percentage decrease significantly.
(a) 6 months: Too short for onion seed storage.
(c) 2 years: Onion seeds usually lose viability after 1 year.
(d) 3 years: Incorrect for onion seeds.
Important Point: Onion seeds should be stored in airtight containers at low humidity and temperature for better shelf life.