PJB-2019-811
Effect of the stress of sodium chloride on the adaptation of Zea mays seedlings with the expense of growth Effect of the stress of sodium chloride on the adaptation of Zea mays seedlings with the expense of growth
Muhammad Junaid Yousaf
Abstract
Maize (Hycorn 984) is considered as the moderate salt tolerant plant species which shows the varying effects and adaptations according the varying concentrations of salt stress- NaCl. When three days old seedlings of maize were subjected to aerial salt stress of concentrations; 0.2%, 0.4% 0.6% and 0.8% after a week in soil, the seedlings revealed the antagonistic effects with the concentrations increased. The experiment was kept for 5 weeks and the chlorophyll content, RWC, RWL and EC leakage were measured, the seedlings of that stage showed adaptation to the salt stress with the expense of growth rate as high seedling death occurred in 0.6% and 0.8% treated pots. However the high growth which was observed in control pots had low chlorophyll content and so high electrolytic leakage as same as the plants aerially treated with 0.8% of NaCl while plants treated with 0.2%. 0.4% and 0.6% salt concentrations had high chlorophyll content and low electrolytic leakage receptively. Related to RWC and WL, plants in 0.8% concentration had the highest water followed by 0.6% and 0.4% while 0.2% and control growth plants appeared the same in this case. In conclusion, it is said that the few seedlings survive under salt stress with stunted growth but higher stability as compared plants grown in control conditions
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