Results And Discussions
There was a naturally infected tomato leaf and fruits showing blight symptoms and identified as Alternaria solani, based on the morphological characteristics (Ellis 1976) reported that in plastic greenhouses and field Sallam and Kamal (2012). Data presented in table1 showed that the significant differences in the degree of resistance to early blight caused by Alternaria solani 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.