Genetic Screening of Cowpea Varieties [Vigna unguiculata (L.) Walp.] for Aphis craccivora Resistance in the Sudano-Sahelian Zone of Cameroon

(2) Dr. Iskra Ventseslavova Sainova, Assistant Professor, Institute of Experimental Morphology, Pathology and Anthropology with Museum (IEMPAM), Bulgarian Academy of Sciences (BAS) in Sofia, Bulgaria.