*Prof   : Ali E. Kambal, Department of Biotechnology, Faculty of Agriculture, University of Khartoum –Email:alikambalk@gmail.com, Tel +249912566119.

*Dr. Mohammed Abdullah Omer, Department of Biotechnology, Faculty of Agriculture, University of Khartoum –Email:maomer2001@yahoo.com, Tel: +249912999125.

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*Dr. Elhadi Ali Ibrahim Head Dept. of Biotechnology,    Faculty of Agriculture, University of Khartoum – Email:Eaikhalil@yahoo.com, Tel: +249915902523.