Diallel analysis of sweetpotato [Ipomoea batatus (L.) Lam] genotypes for combined beta carotene and dry matter content in southern guinea savanna, Nigeria.
Screening sweetpotato (Ipomoea batatas L.) for drought tolerance and high ß-carotene content in Mozambique.
Measuring resistance in potato to Phytophthora infestans with field, laboratory and greenhouse evaluations