Abstract:
In order to study the plant
growth regulator, using salicylic acid (SA)
on germination and growth indices for
laboratory research in crop year 2014-2015,
which was conducted at the research center
Safiabad-Dezful, Khuzestan province. The
treatments included four levels of priming
with salicylic acid {control (distilled water),
0.7, 1.2, 1.7 mM} in a completely
randomized design in three replications. The
results showed that the control treatment
reduced the decrease in germination time.
The highest percentage of germination and
related characteristics of the control
(distilled water) was obtained. Seed vigor
and seedling vigor index were reduced in
high concentrations of salicylic acid. The
germination percentage of an average daily
germination, seed vigor and seedling vigor
index had a positive and significant
correlation with the daily germination rate
showed a significant negative correlation.
The results of comparison of treatments
showed that the treatment concentration of
0.7 mM salicylic acid highest (22.3 days)
and control (distilled water) lowest (0.3 day)
had mean germination time. Effects of
priming showed the highest mean daily
germination (15.44) related to the control
and the lowest (2.97) related to the
concentration of 7.1 mM salicylic acid.
Also, the results showed that the 1.7 mM
salicylic acid treatment had the highest
number of germinated seeds per day
(0.3880) and control treatment had the least
number of germinated seeds per day
(0.6467). The highest vigor index was
observed in control treatment with seedling
length of (8.15 cm) and the lowest vigor
index was observed in 1.7 mM salicylic acid
treatment with seedling length of (1.54 cm).
The highest seedling vigor index was
observed in control treatment (33.58) and
the lowest seedling vigor index was
observed in 1.7 mM salicylic acid treatment
(17.20). The coefficient velocity
germination rate in control treatment was
highest (3) and in the 1.7 mM salicylic acid
treatment was lowest (0.15). The correlation
coefficient between vigor index and
seedling vigor index has the highest value
(98%). There was a positive correlation between germination percentage and mean
daily germination and there was a negative
correlation between germination percentage
and daily germination speed.
