Affiliation: | (1) Department of Botany, Tea Research Foundation of Kenya, P.O. Box 820, Kericho, Kenya;;(2) Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology (JKUAT), P.O. Box 62000, Nairobi, Kenya;(3) Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology (JKUAT), P.O. Box 62000, Nairobi, Kenya |