1. Department of Botany, PMAS Arid Agriculture University, Rawalpindi, Pakistan;
2. Department of Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi, Pakistan;
3. Department of Plant and Environmental Protection, National Institute of Bioremediation, National Agricultural Research Centre, Islamabad, Pakistan;
4. Plant Physiology Program, Crop Sciences Institute, National Agricultural Research Centre, Islamabad, Pakistan