PJB-2021-363
Foliar application of mannitol as an effective approach to ameliorate the salt stress-induced toxicity in two varieties of maize (Zea mays L.)
Mehreen Afzal, Khalid Nawaz, Khalid Hussain, Iqra Iqbal, Huma Riaz, Zainab Abdul Rouf, Mehreen Javeria, Rida Akram, Maida Khaliq, Ayesha Attique, Rida Zainab and Waqar-U-Nisa
Abstract
The present research work was done to assess the role of mannitol in the amelioration of adverse effects of NaCl stress on two maize varieties i.e. Salaar (V1) and LS-787(V2). For this purpose, a pot experiment with Completely Randomized Design (CRD) was conducted at Botanical Garden of University of Gujrat, Gujrat, Pakistan. For this study, 64 pots, half (32) for V1 and half (32) for V2 were filled with river sand. There were four replicates for each treatment. NaCl stress (100mM) was applied at the time of sowing. Full strength Hoagland‘s nutrient solution was given once in a week. After two weeks of germination, foliar application of mannitol was applied in three levels (25mM, 50mM. 75mM). Data was collected for biochemical, physiological and yield parameters after one month of foliar application of mannitol. Data was analyzed using COSTAT software for Analysis of Variance (ANOVA) and mean values were compared with DMRT. Results indicated a considerable decrease in chlorophyll pigments, antioxidant activities (SOD, POD and CAT), protein and carbohydrate accumulation, anthocyanin contents and yield of both varieties which were not treated with mannitol spray under induced salt stress (100mM NaCl) as compared to the plants that were treated with foliar spray of mannitol under salt stress. There was a rise in the electrolyte leakage in the presence of induced salt stress. Physiological activities of maize were also reduced by the salt stress. This indicated a positive role of mannitol in the amelioration of harmful effects of salt stress in maize
To Cite this article:
Afzal, M., K. Nawaz, K. Hussain, I. Iqbal, H. Riaz, Z.A. Rouf, M. Javeria, R. Akram, M. Khaliq, A. Attique, R. Zainab and W.U. Nisa. 2023. Foliar application of mannitol as an effective approach to ameliorate the salt stress-induced toxicity in two varieties of maize (Zea mays L.). Pak. J. Bot., 55(2): DOI: http://dx.doi.org/10.30848/PJB2023-2(37)
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