Maho Yalen Josian Edson

University of Yaounde 1, Faculty of Science, Department of Plant Biology, Yaounde-Cameroon
University of Yaounde 1, Higher Teachers’ Training College, Department of Biological Sciences, Yaounde-Cameroon

Godswill Ntsomboh Ntsefong

University of Yaounde 1, Faculty of Science, Department of Plant Biology, Yaounde-Cameroon
IRAD Specialized Centre for Oil Palm Research of La Dibamba, Douala-Cameroon

Ambang Zachée

University of Yaounde 1, Faculty of Science, Department of Plant Biology, Yaounde-Cameroon