Abstract:
Maximum germination
percentage achieves immediately after
harvesting and gradually decreases with
storage time. Aging is one of the key factors
in plant yield loss especially in vegetables.
Seed aging is the main problem of seed
storage. Application of accelerated aging
treatment is used to assess seed vigor and
quality. Seed priming enhances seed
germination performance after aging. An
experiment was conduct in order to
investigate the activity of catalase and
ascorbate peroxidase during accelerated
aging and repair during priming treatment of
sorghum seeds. In order to improve
germination characteristics in aged seeds
with seed priming. Our result showed that
seed priming treatments significantly (p≤
0.01) affected, germination percentage,
germination index and means time to
germination after aging (0, 3 and 6 days).
Increasing aging duration resulted higher
reduction in germination characteristics.
Priming with gibberelic acid (GA), salicylic
acid (SA) and ascorbic acid (ASC)
increased germination characteristics of
seed aged. The highest germination
percentage, germination index, normal
seedling percentage and enzyme activity
were achieved in control conditions (0 day
of aging). Antioxidant activity of aged seeds
increased after seed priming.
