జర్నల్ ఆఫ్ ప్లాంట్ పాథాలజీ & మైక్రోబయాలజీ

నైరూప్య

Assessment of the Tolerance Level of Three Olive Intercroppings (Tomato, Eggplant and Pepper) vis-a-vis Verticillium dahliae Klebahn, at Seed and Cutting Stage

Darai Soumia, Chourfi Abd Elali, Amiri Said and Diouri Mohammed

The olive tree (Olea europaea) is an arboreal crop that has developed coping and production capabilities in diverse soil and climatic conditions in Morocco. Therefore, it has become present in virtually the entire national territory. The olive tree is sensitive to verticillium wilt. Several isolates of Verticillium dahliae Kleb collected from olive tree, in different regions of Morocco, were tested to determine their pathogenicity. The pathogenicity of forty eight Moroccans isolates of V. dahliae was tested vis-à-vis tomato, eggplant and pepper. A continuum of pathogenicity degree was observed from more to less aggressive. Isolates from North and South had very high degrees of pathogenicity. Intercroppings tested also showed tolerance degree variation toward V. dahliae as follows pepper was least sensitive whereas tomato was most sensitive.