1. Prof.Sayadat El-Tigani Mohamed,

Professor,Department of Botany,Faculty of Science, University of Khartoum.Sudan.

sayadat44@gmail.com  

alicooooo5@hotmail.com

Tel : 00249-

2. Prof.SakinaYagi,professor,

Department of Botany,Faculty of Science, University of Khartoum.Sudan.

sakinayagi@yahoo.com

Tel: : 00249-