based on scale ranged from 10 (most resistant) to 1(most susceptible). The highest value of resistance (10) was recorded in NCEBR-6 was (10) and followed by the cross UCT5 × NCEBR-6 (7.5). The lowest value was found in cv. Super Strain B (1.75), Alternaria Solani affected this cultivar in all its parts with lesions, dark rings in leaves; stem and fruits