dc.description.abstract |
Seed priming enhances seed performance in many crop species including rice. But, storing
primed seed for longer period of time is the challenge in commercializing of the
technology. This study was conducted to investigate the storability of halo-primed and redried seed of upland rice under laboratory conditions. Rice seeds were hydro-primed
(distilled water for 24 hours) and halo-primed using different concentrations of calcium
chloride in 0.25, 0.5, 0.75% and 1.00% (w/w) CaCl2 solutions for 24 hours and re-dried.
The primed seeds were compared with dry seeds. Both primed and dry seeds were stored
in low-density polyethylene and high-density polyethylene plastic bags at 25± 3oC for 0,
15, 30, 45, 60, and 75 days. Data on germination percentage, seedling fresh and dry
weights, speed of germination, root and shoot lengths, vigor index and thousand seed
weight were collected every fifteen days. It was observed that storing rice seed hydroprimed (distilled water) and halo-primed (@1.00% CaCl2), re-dried, and stored in highdensity polyethylene plastic bags could readily maintain seed germination and seedling
growth parameters until 45 days whereas low-density polyethylene bags could maintain
physiological quality until 30 days. Therefore, it is recommended that rice seed primed
with 1.00% CaCl2, re-dried and stored in high-density polyethylene plastic bags could be
sold within 45 days after priming |
en_US |