Melatonin-Mediated Induction of Salt Tolerance in Maize at Germination and Seedling Stage
Melatonin-Mediated Induction of Salt Tolerance in Maize at Germination and Seedling Stage
Syed Saqlain Hussain1*, Muhammad Rasheed2, Zammurad Iqbal Ahmed2, Ghulam Jilani3, Muhammad Irfan4, Muhammad Kashif Aziz5, Fiaz Hussain1, Muhammad Akhlaq Mudassar1 and Zuhair Hasnain2
ABSTRACT
Salt stress is more detrimental at germination, and seedling establishment stages in a plant life. Moreover, the escape of crop from salt injury at these stages is direly needed. Melatonin is known as N-acetyl-5-methoxytryptamine with chemical formula melatonin as C13H16N2O2. It is a versatile molecule with the speciality to lessen salt stress on the plant. However, mechanism of melatonin which is involved in salt stress mitigation is still under inspection of plant scientists. For the purpose, this research was carried out and the effects of melatonin priming was searched out viz., hydro-priming (HP), 500, 1000 and1500 µM on seed germination and early seedling establishment of six maize genotypes viz., MMRI-Yellow, NCEV-1530-9, YH-1898, Composite, SB-9617 and FH-949 under salinity-induced stress. Seed priming with 1000µM melatonin efficiently lowered the deleterious effects of salt stress on germination and early seedling stages in all the studied genotypes. Moreover, SB-9617 exhibited comparatively the greater salt tolerance at these stages. Finally, it was concluded that SB-9617could survive and thrive best in saline soils. Furthermore, seed priming with 1000µM of melatonin proved to be a good choice to alleviate the adversities of salts at germination and early seedling establishment stage in maize.
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