Miseda Victoria Onyango

Department of Crops, Horticulture and Soils, Egerton University, P. O Box 536, Egerton, Kenya

Wanyera Ruth

Kenya Agricultural and Livestock Research Organization, Food Crops Research Centre Njoro, P.O. Private Bag, Njoro 20107, Kenya

Muthamia Japhet

Department of Biological Sciences, Egerton University, P. O Box 536, Egerton, Kenya

Owuoche James

Department of Crops, Horticulture and Soils, Egerton University, P. O Box 536, Egerton, Kenya