Abstract
This study was intended to measure the impact of salicylic acid (SA) on
maize under salt stress. For this purpose salinity effect on various
morpho-physiological and biochemical attributes of plants was analyzed
by launching a petri dish and pot experiment. The analysis spread out in a
totally block design (randomized) with ten replicates for each salt (0 and
120 mM NaCl) and SA (0, 0.1, 0.5 and 1mM) treatment. The
commercially available cultivar (cv. Faisal) of maize was planted in
earthen pots for 15 days. After fifteen days of growth, seedlings were
irrigated with saline water (120 mM NaCl) and SA was applied for 60 days
simultaneously. To observe the germination, seed were also primed with
same concentrations in petri dishes. After 60 days on final treatment
harvesting was carried out, leaf samples were taken for analyzing
biochemical attributes (protein contents, antioxidants enzyme activates).
A decrease in seed germination percentage from 95.22 (at control) to
25.34% (at 120 mM salt stress) and shoot length from 86.12 (at control)
to 42.36 cm (at 120 mM salt stress) was observed. Similar decreasing
pattern of growth was observed in case of pot grown plants after 60 days.
The results suggested that salt stress drastically reduced length of shoot
and root, fresh / dry weight and leaf area and antioxidant enzyme
activities while the use of 0.5 mM concentration of SA greatly made good
progress in all these growth and biochemical parameters. Production of
antioxidant compounds under salt stress is accelerated under the
influence of SA. So it causes modifications in antioxidant compounds and
hence increases salt tolerance under saline conditions.
AAMIR MAHMOOD, ZAHOOR AHMAD SAJID, SHEZA AYAZ KHILJI. (2018) Influence of Salicylic Acid on salinity stress tolerance by seed priming and foliar application on Maize (Zea Mays), Biologia – Journal of Biological Society of Pakistan, Volume 64 (II), Volume 64 (II).
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