A. O. T. Ashafa1*, T. O. Sunmonu2 and A. J. Afolayan3
1 Department of plant sciences, University of the Free State, Qwaqwa Campus, Phuthaditjhaba, South Africa.
2Department of Biochemistry, University of Ilorin, Ilorin, Nigeria.
3Department of Botany, University of Fort Hare, Alice 5700, Eastern Cape, South Africa.
