The study was conducted at Regional Agricultural Research Station, Jamalpur during 2008-2009. Seeds of a total forty four varieties and lines viz. Alegria, 3.25, Agila, Challenger, Quincy, Sagitta, Innovator, Karlena, Pamela, Naviga, Atlas, Apolline, Crisps 4 all, Taurus, Ajiba, Mastero, Smart, Opera, Labella, Bellini, Saline, V36, Fontane, Milva, Avalon, 01.25, 01.73, Mustang, 01.22, Maridian, Atlantic, Melody, Hermis, Delware, Sassy, Crosty, Markies, Courage, Provento, Aladin, Jelly, Elgar, Steffi and Diamant were used in this study. Data were recorded just from the onset of the disease. Disease severity was measured following a standard 1-9 disease rating scale. where, 1 =0% blighted (no disease observed), 2 = 0.1% blighted (a few scattered plants blighted; no more than 1 or 2 spots, 3= 1.0% blighted up to 10 spots per plant or general light infection, 4 = 50% blighted (about 50 spots per plant; up to 1 in 10 leaflets infected), 5 = 25.0% blighted (nearly every plant affected, but plant looking normal form; plants may smell of blight; fields look green although every plant is affect), 6 = 50.0% blighted (every plant affected and about 50% of the leaf area is destroyed; field appears green, flecked with brown), 7 = 75.0% blighted (about 75% of the leaf area is destroyed; field appears neither predominantly brown nor green), 8 = 95.0% blighted (only few leaves on plants, but stems are green), and 9 = 100.0% blighted (all leaves dead, stems dead or dying).