Abstract:
Seed priming techniques
have been used to increase germination,
improve germination uniformity and
seedling establishment under stressed
conditions. Seed priming was used in rye
mountain (Secale montanum) to increase
seed germination and tolerance on stress
exposure (Cold stress). Rye seeds were
treated with water (Hydro priming) and
polyetelyn glycol 6000 (Osmo priming).
The effect of priming was assessed on
germination characteristics under cold stress
(at 3◦C) for 7 days. Analyze of variance for
hydro priming showed that temperature ×
time of priming interaction was significantly
(P < 0.01) for all traits under cold stress and
for osmo priming showed that
Concentration of PEG × Temperature ×
Time of priming interaction was
significantly (P < 0.01) for all traits under
cold stress except seedling dry weight
(SDW). For hydro priming the highest
germination percentage (GP) was attained
from hydro priming at 15±1°C for 16 h
(70%), whereas the highest normal seedling
percentage (NSP) (22.5%), germination
index (GI) (8.57), seedling vigor index
(SVI) (38.9) and seedling length (SL) (1.7
cm) were in the hydro priming at 10±1°C
for 16 h. For osmo priming the highest
germination percentage (GP) (80 and
80.5%), normal seedling percentage (NSP)
(48 and 45%), seedling vigor index (SVI)
(101.26 and 85.25) and seedling length (SL)
(2.11 and 1.89 cm) observed in the osmo
priming with concentrations of -9 and -15
bar PEG at 15±1°C for 24 h.
