Mukhtar Alam
Agricultural Science Department, UCW, Aberystwyth Dyfed, UK
Habib Ahmad
Government College Sherwan, Abbottabad, Pakistan
M. H. Quazi
Pakistan Agricultural Research Council (PARC), Islamabad, Pakistan
H. I. T. Khawaja
CytoGenetics Laboratories, National Agricultural Research Centre (NARC), Islamabad, Pakistan