Alleviation of Adverse Effects of Drought Stress on Growth and Some Potential Physiological Attributes in Maize (Zea mays L.) by Seed Electromagnetic Treatment
Article first published online: 3 OCT 2011
© 2011 Wiley Periodicals, Inc.
Photochemistry and Photobiology
Volume 87, Issue 6, pages 1354–1362, November/December 2011
How to Cite
Javed, N., Ashraf, M., Akram, N. A. and Al-Qurainy, F. (2011), Alleviation of Adverse Effects of Drought Stress on Growth and Some Potential Physiological Attributes in Maize (Zea mays L.) by Seed Electromagnetic Treatment. Photochemistry and Photobiology, 87: 1354–1362. doi: 10.1111/j.1751-1097.2011.00990.x
- Issue published online: 21 OCT 2011
- Article first published online: 3 OCT 2011
- Accepted manuscript online: 28 AUG 2011 08:56PM EST
- Received 10 June 2011, accepted 17 August 2011
Effects of varying preseed magnetic treatments on growth, chlorophyll pigments, photosynthesis, water relation attributes, fluorescence and levels of osmoprotectants in maize plants were tested under normal and drought stress conditions. Seeds of two maize cultivars were treated with different (T0 [0 mT], T1 [100 mT for 5 min], T2 [100 mT for 10 min], T3 [150 mT for 5 min] and T4 [150 mT for 10 min]) electromagnetic treatments. Drought stress considerably suppressed growth, chlorophyll a and b pigments, leaf water potential, photosynthetic rate (A), stomatal conductance (gs) and substomatal CO2 concentration (Ci), while it increased leaf glycinebetaine and proline accumulation in both maize cultivars. However, pretreated seeds with different magnetic treatments significantly alleviated the drought-induced adverse effects on growth by improving chlorophyll a, A, E, gs, Ci and photochemical quenching and nonphotochemical quenching, while it had no significant effect on other attributes. However, different magnetic treatments negatively affected the gs and Ci particularly in cv. Agaiti-2002 under drought stress conditions. Of all magnetic treatments, 100 and 150 mT for 10 min were most effective in alleviating the drought-induced adverse effects. Overall, preseed electromagnetic treatments could be used to minimize the drought-induced adverse effects on different crop plants.