Impact of storage environment and packaging materials on seed quality parameters during storage in onion seed (Allium cepa L.)

A lab experiment was conducted from April 2021-Sep 2022 at NSP, Seed unit, UAS, Dharwad. The seed quality parameters such as germination, shoot length, root length, seedling dry weight, and seedling vigor index were calculated. Onion seeds were evaluated at bimonthly intervals, and the experimental design followed was a Factorial completely randomized design (FCRD) with 3 replications and 2 factors, namely storage conditions such as ambient and cold storage,and storage containers (cloth bag, high-density polythene bag (HDPE), polythene bag (700 gauge), aluminum laminated bag, vacuum packed bag), the results revealed that the seeds stored with the treatment with vacuum packed bagand stored in cold storage gave good results at the end of 18 months of storage periodi.e.,seed germination (82.83 %), Shoot length (8.97 cm), root length (7.61 cm), seedling dry weight (21.95 mg) and seedling vigor index (1818) respectively compared to other treatments. Next to the vacuum-packed bag with cold storage, the best results were seen in the seeds stored in cold storage with the aluminum laminated bag.