Codification and morphological characterization of the local varieties of corn (zea mays L.) of chad in way of extinction
In Chad, the food security constitutes a problem insofar where the agricultural production cannot satisfy the demand. The main causes of this decline are often imputed to the climate whose the worsening remains certain, but also the no availability of resources genetic of the major cereals crops. Thus, some local varieties of corn are in the way of extinction because the producers cultivate the local and exotic varieties side by side, or they exchange their seeds and caused the loss of their genetic identity.