Abstract:
Seed germination and
seedling growth are critical stages in the life
cycle of a plant, especially under adverse
abiotic stresses. Seed germination
negatively affected by stress conditions.
Seed priming techniques have been used to
increase germination characteristics and
improve germination uniformity in more
field crops under stressed conditions. This
experimental aimed to evaluate the effect of
salinity and halo-priming on seed reserve
utilization and seed germination of wheat
seeds. For create salinity stress, NaCl in
osmotic levels at 0 (as control), -4, -8, - 12
and -16 bar was used. Seeds of were
pretreated with halo-priming at 10 °C for 24
h and water at 10 °C for 24 h. Our results
showed that treatment×drought interaction
on these traits: germination percentage,
weight of utilized (mobilized) seed, seed
reserve utilization efficiency, seedling dry
weight and seed reserve depletion
percentage were significant. The highest
germination percentage was obtained from
halo priming in control conditions. Thus
priming improved study traits in wheat
under salinity stress. Priming increased
germination percentage and seed reserve
utilization as compared to the unprimed
seeds. The highest germination percentage
and seed reserve utilization were as obtained
from halo priming in control conditions.
