Ethnopharmacological Survey of Medicinal Plants against Cancer in Southeastern Morocco

Darâa-Tafilalet is considered as one of the charming Moroccan areas concerning the knowledge connected to the traditional use of plants for a therapeutic purpose. This work aims to collect, analyze and evaluate the ethnobotanical knowledge about medicinal plants used in the management of diverse forms of cancer in the Darâa-Tafilalet region. The total number of informants interviewed in this study was 1026 (944 were ordinary local inhabitants and 82 were herbalists). Information was obtained by means of structured and semi-structured interviews with local people. Then, data obtained from interviewees were analyzed by calculating some relative cultural importance (RCI) indices (UV, FUV, ROP and FL). Principal component analysis (PCA) was also involved in this study for comparing some characteristics of species. 101 plants used in folk medicine and belonging to 47 families were identified in this study. The highest UV was attributed to Suaeda vermiculata (0.06897); while, the optimal FUV has been given to Ranunculaceae (0.05956). Concerning the FL values, Nigella sativa, Allium sativum, Allium cepa, Calotropis procera, Foeniculum vulgare and Olea europaea were classified in first with a value cited 100% all for general cancer; whereas Nigella sativa had the highest ROP value (86%). The present enquiry highlighted interesting botanical and cultural findings related to the anticancer ethnomedical knowledge adapted by the local population of Darâa-Tafilalet. However, several experimental and fieldwork studies are needed to give more validity and reliability to such investigation.