N. Akhtar, M. F. Nazir, A. Rabnawaz, T. Mahmood, M. E. Safdar, M. Asif and A. Rehman
1 University College of Agriculture, University of Sargodha, Sargodha, Pakistan
2 Rice Research Institute Kala Shah Kaku, Punjab, Pakistan
3 PMAS Arid Agriculture University, Rawalpindi, Pakistan