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Abstract
Corn (Zea mays L.) is one of the most important cereal crops all over
the world. Leaf blight disease caused by Helminthosporium turcicum is an
important foliar disease of maize in temperate areas of the world. Seven
strains, obtained from 7 governorates in Egypt, tested against two maize
cultivars, Three Way Cross 320 (resistant) and Giza 2 (susceptible), varied
in their virulence with strain No. 6 being the most aggressive.
Twelve maize hybrids were evaluated for resistance reaction to
H. turcicum in greenhouse at Giza Experimental Station under artificial
infection and in Nubariya Experimental Station under natural infection.