1. Usman, M., Raheem, Z.F., Ahsan, T., Iqbal, A., Sarfaraz, Z.N. and Haq, Z. (2013) Morphological, Physiological and Biochemical Attributes as Indicators for Drought Tolerance in Rice (Oryza sativa L.). European Journal of Biological Sciences, 5, 23-28.
2. Lum, M.S. (2014) Effect of Drought Stress on Growth, Proline and Antioxidant Enzyme Activities of Upland Rice. Journal of Animal and Plant Sciences, 24, 1487-1493.
3. IRRI (2005) Annual Report for 2004. International Rice Research Institute, Los Banos.
4. FAO (2002) Crops and Drops Making the Best Use of Water for Agriculture. Food and Agriculture Organization of the United Nations, Rome.
5. Antioxidant potential and indole alkaloid profile variations with water deficits along different parts of two varieties of Catharanthus roseus